An Alternative Mathematical Model for Oxygen Transfer Evaluation in Clean Water

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "An Alternative Mathematical Model for Oxygen Transfer Evaluation in Clean Water"

Transcription

1 An Alernaive Mahemaical Model for Oxygen Transfer Evaluaion in Clean Waer Yanjun (John) He 1, PE, BCEE 1 Kruger Inc., 41 Weson Parkway, Cary, NC ABSTRACT Energy consumpion from aeraion sysem is a bigges par of he oal energy cos in wasewaer reamen plan and accoun for as much as 6% of he energy consumpion for he acivaed sludge process. Therefore, i is very imporan o know how effecive he aeraion sysem and significan aenion has been paid o developmen and upgrade of sandard mehod for quanifying oxygen ransfer efficiency of he aeraion sysem. In order o evaluae he performance of differen ypes of aeraion sysems, he American Sociey of Civil Engineers (ASCE) and US EPA joinly developed a sandard for he measuremen of oxygen ransfer in Clean Waer in The Sandard was subsequenly improved, updaed, and republished in 1991 and 26. The focus of his paper has been o develop an alernaive model which includes more parameers han he sandard mehod. A new model would probably be a more accurae descripion of he aeraion process and give more reliable oxygen ransfer performance evaluaion resuls. KEYWORDS Aeraion, ASCE, SOTR, oxygen ransfer, ransfer coefficien, surface ransfer, Model INTRODUCTION The ASCE Sandard Mehod for he measuremen of oxygen ransfer in clean waer, which has also been called he Nonlinear Regression Mehod, is based on he unseady-sae removal of dissolved oxygen (DO) by sodium sulfie followed by re-oxygenaion back o sauraion or seady-sae condiions wih accurae experimenal measuremen of he DO level over ime. The resuls of he es are convered ino he values a he sandard condiions and he final resuls are expressed as sandard oxygen ransfer rae (SOTR) or sandard oxygen ransfer efficiency (SOTE), a hypoheical oxygen mass ransferred per uni of ime or fracion of oxygen in an injeced gas sream dissolved in clean waer when DO concenraion is zero in he waer volume, he waer emperaure is 2 C, and he baromeric pressure is 1. am (11 kpa). The following sandard simplified mass ransfer model is used o analyze DO measuremen daa o esimae volumeric mass ransfer coefficien: dc = K α (C - C ) (1) d Where K ɑ is volumeric mass ransfer coefficien (T -1 ), C is he sauraion or near sauraion DO concenraion a infinie ime (mg/), and C is he dissolved oxygen a ime. 1

2 Inegraion and re-arrangemen of Eq. 1 gives: ( C - C) 1 ( C - C ) ( - ) K α = In (2) Once K ɑ value a sie condiions is deermined by Eq. 2, he SOTR can be readily calculaed by he following equaion: ( 2-) SOTR = K α θ CS, 2 V (3) Where Ѳ is he empirical emperaure correcion facor and V is liquid volume in he es ank wih aeraor. Examinaion of Eq. 1 reveals ha he sandard model simply assumes he following: (1) waer in he ank is compleely mixed; (2) he overall oxygen ransfer is only from air bubbles, oxygen ransfer from waer surface is no aken ino consideraion; (3) he equilibrium DO concenraions are he same everywhere in he ank, he DO equilibrium concenraions variaion wih waer deph is also no aken ino consideraion. Since BIDs are won and los by as lile as 2-5% difference in oxygen ransfers raes, i is imporan o know how accurae he sandard mehod for quanifying oxygen ransfer rae. The paper repors how big he impac of oxygen ransfer from he air is a he waer surface in SOTR calculaions. The paper also repors he effec of he equilibrium DO concenraions, which is also depending on he raio of oxygen in he air bubble which varies wih waer deph in SOTR calculaions. METHODOOGY Modified Sandard Mehod Model 1 When a submerged diffuser is operaed, here are wo main inerfaces over which oxygen ransfer occurs. Oxygen ransfer occurs across he bubble inerfaces as he bubbles rise hrough he waer column. Oxygen ransfer also occurs across he waer surface where oxygen in he air dissolved ino waer. A he waer surface, oxygen ransfer is driven by he DO concenraion gradien beween gas-liquid films. The oxygen ransfer across bubbles is driven by he DO concenraion gradien beween he equilibrium DO concenraion and acual DO concenraion in liquid phase. In order o describe he oxygen ransfers from he waer surface and bubbles, we separae he oal mass ransfer ino wo differen pars make i possible o evaluae he oxygen ransfer from he air bubbles and a he waer surface. The mass ransfer coefficien for he air bubbles, K ɑ, is assumed o be presen in he whole ank and he waer is assumed o be compleely mixed. K ɑ s, which is he mass ransfer coefficien a he waer surface, is only presen a he waer surface. K ɑ s value depends on level of urbulence a waer surface. The more urbulence a he waer surface he more oxygen is ransferred and K ɑ s increases (DeMoyer e al, 23). How urbulen he waer surface is can depend on he ype of aeraion sysem and he air flow rae. 2

3 dc d = K α (C - C ) + K s α s ( C - C ) SC (4) Where K ɑ s is volumeric mass ransfer coefficien (T -1 ) a waer surface, C SC is he sauraion concenraion a sie emperaure and amospheric, which is equal o C, and C is he dissolved oxygen a ime. Inegraion and re-arrangemen of Eq. 4 becomes: ( C λ + ξ) 1 ( ξ + λ C ) ( - ) ln = λ (5) Where ξ= K a C SC + K s a s C SC, λ= - K a - K s a s, and C is DO concenraion a ime zero. If he iniial dissolved oxygen (D.O) concenraion is mg/ a ime zero, Eq. 5 becomes: ( C λ + ξ) 1 ln = λ (6) ξ ( - ) When sysem is a he seady sae condiion, C () C SC, Eq. 6 can be simplified as: 2 K a s ln = K a + K a s s ( - ) λ (7) Because C SC is DO sauraion concenraion a sie condiions and can be calculaed based on Henry s aw or can be found in he chemical engineering exbook or elsewhere (ewis, 26). K a s is he only parameer ha mus be evaluaed. Once K a s is known, i is a simple maer o calculae K a a sie condiions and calculae he SOTR using Sandard Mehod as discussed in preceding paragraph. a s is raio of oal waer surface area (As) o oal ank volume (V), K s is air-waer ransfer coefficien and i has been deermined by a number of researchers (McWhirer and Huer, DeMoyer, C.D. e al) under various es condiions. K a s could be also measured. The sandard simplified mass ransfer model as discussed in preceding paragraph is used o analyze DO measuremen daa o esimae volumeric mass ransfer coefficien K a s. Modified Sandard Mehod Model 2 Because he liquid phase equilibrium concenraion of a given bubble is no only a funcion of emperaure and amospheric pressure, bu also hydrosaic pressure and gas phase oxygen composiion, oxygen ransfer across bubbles as bubbles rise hrough he waer column mus include some addiional consideraions. Firs is ha bubble-gas ransfer of oxygen, nirogen and some oher race gases occurs due o absorpion process in he liquid phase. As a resul, gas phase oxygen composiion changes over he deph in he gas bubble. Second even ha complicaes he modeling of oxygen ransfer is ha DO equilibrium concenraion also varies wih waer deph. According he Henry s law, he higher he pressure, he more oxygen can be dissolved in he waer. 3

4 In order o describe he oxygen ransfer behavior wih consideraions of oxygen ransfer a waer surface and he difference in equilibrium concenraions wih deph, he following simplified mass ransfer model ha combine Sandard Model and Modified Model 1is used o analyze DO measuremen daa o esimae volumeric mass ransfer coefficien: dc d = K α (C d () z - C )dz + K α ( C - C ) s SC (8) Where d is side waer deph o aeraion sysem (), is side waer deph (), and C o is dissolved equilibrium concenraion (mg/). The DO equilibrium concenraion, C o can be esimaed by following equaion (McWhirer and Huer, 1989): ( - ) d P - PWV y C () z = CSC [ ] (9) 1- P.266 WV where y (kmol O 2 /kmol/n 2 ) is gas-phase oxygen composiion, which is he molar raio of oxygen o nirogen gas in he gas phase, P WV (am) is waer vapor pressure, P (am) is amospheric pressure,.266 (kmol O 2 /kmol N 2 ) a z = when he bubbles released from he diffusers. Inegraion of Eq. 8 yields: dc d = K α d C () z - C )dz + K αs ( CSC - C ) s (1) In order o solve Eq. 1, C o mus be compued. Because y mus be deermined o be able o calculae C in Equaion 8, and y is also deph dependen, i makes he compuaion of Eq. 1 exremely complicaed. However, because a he seady sae condiion, C C and dc, Eq. 1 can be simplified as: d K α (C () z - C )dz = (11) d Re-arrangemen of Eq. 11 gives: () z - C )dz d K α = (C (12) The mass ransfer model as discussed in preceding paragraph is used o deermine K a s. K a can be easily calculaed by Eq. 12. Once K a s and K a are known, i is a simple maer o calculae he SOTR using Sandard Mehod as discussed in Insrucion paragraph. () SC 4

5 RESUTS AND DISCUSSION Fundamenals of Ka Predicaion Using ASCE Sandard Mehod ASCE Sandard Mehod (Figure 1) is based on a very simple model by assuming oxygen ransfer only occurs across he bubbles and liquid waer. The mehod requires measuremen of DO over ime and esimaion of K a by using nonlinear regression. Once K a is deermined, SOTR is calculaed using he Eq. 3. Figure 1. ASCE Sandard Mehod Model Schemaic Showing Oxygen Transfer Only Occurs across Air Bubbles and Bulk iquid Because ASCE Sandard Mehod requires coninuously recording DO values unil DO concenraion in he ank reaches a leas 98% of he presumed seady sae concenraion, all measured DO concenraions over ime are given in Table 1. Table 1 also liss he bes esimaes of hree major parameers (K a, DO sauraion concenraion, and iniial DO concenraion) ha mus be deermined in he sandard model. C is he DO concenraion a ime zero, which is.4 mg/. C is he sauraion or near sauraion DO concenraion a infinie ime (mg/), his can measured or calculaed based on he equaion in he ASCE sandard. K a values are calculaed based on Eq. 2. Figure 2 shows re-aeraion daa and % of DO sauraion concenraion over ime, ploed o conform o ASCE sandard mehod. Table 2 shows esimaed SOTR and SOTE values using K a, ank volume, air flow rae, and diffuser submerged deph. 5

6 Table 1. Measured DO Daa and Esimaed Parameers for Sandard Model Time DO DO Sauraion Iniial DO Conc. % Cs og Defici K a (minues) (mg/) (mg/) (mg/) % NA hr %.1 NA % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %

7 Figure 2. Measured DO Concenraions and % of DO Sauaraion over Time Table 2: Sandard Oxygen Transfer Rae and Efficiency Tes Resuls Using ASCE Sandard Model Air Flow Tank Volume Diffuser Deph K Sie K a (2 C) SOTR SOTE SOTE (SCFM) (MG) (f) (hr -1 ) (hr -1 ) (lbs/hr) (%) %/f 3, Fundamenals of K a Predicaion Using Modified Sandard Model 1 As discussed in Mehodology Secion, here exis wo difference mass ransfer zones for oxygen ransfer (Figure 3) in a diffused aeraion sysem where he air is discharged ino liquid on he boom of he aeraion ank and rise hrough liquid o he waer surface. Because oxygen ransfer rae consiss of wo erms: one from he air bubbles and he oher from he waer surface, K a s mus be deermined o be able calculae K a. 7

8 Figure 3. Modified Model 1 Schemaic Showing Oxygen Transfer Only Occurs across Air Bubbles and Waer Surface Because a s is raio of oal waer surface area (As) o oal ank volume (V), K s is air-waer ransfer coefficien and i has been deermined by a number of researchers (McWhirer and Huer, DeMoyer, C.D. e al) under various es condiions, K a s calculaion becomes very simple. Once K a s is calculaed, K a can be calculaed using he following equaion: [ K α (C - C ) K α ( C - C ) ] SOTR = V + (13) s s SC In order o use Eq. 7 o deermine K a, an ieraive approach mus be used by assuming an arbirary K a value as an iniial guess and repea same calculaion ill values in wo sides are equal. All esimaed parameers using Modified Sandard Model 1 are summarized in Table 3. As shown in Table 3, K s a s value is relaively small in comparison o he oal K a, his can be explained by bubble oxygen ransfer is sill he primary mode of oxygen ransfer for aeraion sysem in he deep aeraion ank (17f) in comparison wih surface oxygen ransfer. Table 3. Sandard Oxygen Transfer Rae and Efficiency Tes Resuls Using Modified Sandard Model 1 Air Flow Tank Volume Diffuser Deph K a (2 C) K a s (2 C) SOTR SOTE SOTE (SCFM) (MG) (f) (hr -1 ) (hr -1 ) (lbs/hr) (%) %/f 3, Fundamenals of K a Predicaion Using Modified Sandard Model 2 8

9 In his mass ranspor model, he air phase oxygen composiion in he bubbles varies wih deph. Air released from he diffuser conains an iniial air phase oxygen composiion (mole raio) of.266 (.21 O 2 /.79 N 2 ). A he same ime, alhough solubiliy of nirogen gas is almos wice as much as oxygen, he concenraion gradien of nirogen is significanly lower (DeMoyer e al). As a resul, gas phase oxygen composiion decreases over deph. K a s can be deermined by he same mehod as discussed in preceding paragraph. C can be deermine d by Eq. 9. Once K a s and C are known, K a can be deermined by Eq. 12. All esimaed parameers using Modified Sandard Model 2 are summarized in Table 4. As shown in Table 4, he impac of oxygen ransfer from he air is a he waer surface in SOTR calculaions can be significan (~1%). Meanwhile, he equilibrium DO concenraions and oxygen composiion in gas bubble, which vary wih waer deph have a significan impac in SOTR calculaions. Table 4: Sandard Oxygen Transfer Rae and Efficiency Tes Resuls Mehod K a (2) K s a s SOTR SOTE SOTE/f K a Difference hr -1 hr -1 lbs/hr % % % Sandard Modified % Modified % CONCUSIONS Field oxygen ransfer resuls presened in his paper suppored he conclusion ha sandard mehod for oxygen ransfer measuremens oversimplified he oxygen ransfer process by assuming surface oxygen ransfer is negligible Field oxygen ransfer resuls presened in his paper also suppored he conclusion ha sandard mehod for oxygen ransfer measuremens oversimplified he oxygen ransfer process by assuming he equilibrium DO concenraions are he same everywhere in he ank. Field oxygen ransfer presened in his paper indicaed oxygen ransfer from waer surface is around 1% of bubble ransfer oxygen. Field oxygen ransfer presened in his paper shown oxygen mass ransfer efficien and SOTR measuremen error could be up o 2% due o surface oxygen ransfer and liquidwaer DO equilibrium concenraions and gas phase oxygen composiion variaion over he deph. Sandard mehod for oxygen ransfer measuremens dose no describe he whole aeraion process, in order o ge comparable resuls, all invesigaes mus he mehod a he same condiions. 9

10 REFERENCE ASCE, 27. Measuremen of Oxygen Transfer in Clean Waer. American Sociey of Civil Engineers, Virginia McWhie, J.R. & Huner, J.C., Improved Oxygen Mass Transfer Modeling for Diffused/Subsurface Aeraion Sysem. American Insiue of Chemical Engineers Journal, Vol. 35, no. 9, pp DeMoyer, C.D., Schierholz, E.., Gulliver, J.S., and Wilhelms, S.C. 23. Impac of Bubble and Free Surface Oxygen Transfer on Diffused Aeraion Sysems. Waer Research. Vol. 37, Sensrom, M.K, eu, S.Y., and Jiang, P. 26. Theory o Pracice: Oxygen Transfer and he New ASCE Sandard. Proceedings of WEFTC 26, pp Ingrid Fandriks Alernaive Mehods for Evluaion of Oxygen Transfer Performance in Clean Waer. Maser Thesis. Deparmen of Informaion Technology, Uppsala Universiy, Uppsala. ewis, M.E. 26. Dissolved Oxygen (version 2.1) Chaper A6, Secion 6.2. hp://waer.usgs.gov/owq/fieldmanual/chaper6/6.2_ver3.pdf 1

Morningstar Investor Return

Morningstar Investor Return Morningsar Invesor Reurn Morningsar Mehodology Paper March 3, 2009 2009 Morningsar, Inc. All righs reserved. The informaion in his documen is he propery of Morningsar, Inc. Reproducion or ranscripion by

More information

Stock Return Expectations in the Credit Market

Stock Return Expectations in the Credit Market Sock Reurn Expecaions in he Credi Marke Hans Bysröm * Sepember 016 In his paper we compue long-erm sock reurn expecaions (across he business cycle) for individual firms using informaion backed ou from

More information

KEY CONCEPTS AND PROCESS SKILLS. 1. An allele is one of the two or more forms of a gene present in a population. MATERIALS AND ADVANCE PREPARATION

KEY CONCEPTS AND PROCESS SKILLS. 1. An allele is one of the two or more forms of a gene present in a population. MATERIALS AND ADVANCE PREPARATION Gene Squares 61 40- o 2 3 50-minue sessions ACIVIY OVERVIEW P R O B L E M S O LV I N G SUMMARY Sudens use Punne squares o predic he approximae frequencies of rais among he offspring of specific crier crosses.

More information

What the Puck? an exploration of Two-Dimensional collisions

What the Puck? an exploration of Two-Dimensional collisions Wha he Puck? an exploraion of Two-Dimensional collisions 1) Have you ever played 8-Ball pool and los he game because you scrached while aemping o sink he 8-Ball in a corner pocke? Skech he sho below: Each

More information

Guidance Statement on Calculation Methodology

Guidance Statement on Calculation Methodology Guidance Saemen on Calculaion Mehodology Adopion Dae: 28 Sepember 200 Effecive Dae: January 20 Reroacive Applicaion: No Required www.gipssandards.org 200 CFA Insiue Guidance Saemen on Calculaion Mehodology

More information

SIMULATION OF WAVE EFFECT ON SHIP HYDRODYNAMICS BY RANSE

SIMULATION OF WAVE EFFECT ON SHIP HYDRODYNAMICS BY RANSE 1 h Inernaional Conference on Sabiliy of Ships and Ocean Vehicles 591 SIMULATION OF WAVE EFFECT ON SHIP HYDRODYNAMICS BY RANSE Qiuxin Gao, Universiy of Srahclyde, UK, Gao.q.x@srah.ac.uk Dracos Vassalos,

More information

KINEMATICS IN ONE DIMENSION

KINEMATICS IN ONE DIMENSION chaper KINEMATICS IN ONE DIMENSION Secion 2.1 Displacemen Secion 2.2 Speed and Velociy 1. A paricle ravels along a curved pah beween wo poins P and Q as shown. The displacemen of he paricle does no depend

More information

CONTROL VALVES IN TURBO-COMPRESSOR ANTI-SURGE SYSTEMS

CONTROL VALVES IN TURBO-COMPRESSOR ANTI-SURGE SYSTEMS CONTROL VALVES IN TURBO-COMPRESSOR ANTI-SURGE SYSTEMS keninrol CONTROL VALVES IN TURBO-COMPRESSOR ANTI-SURGE SYSTEMS CONTROL VALVES IN TURBO-COMPRESSOR ANTI-SURGE SYSTEMS 0 KOSO KENT INTROL SUPPLIES A

More information

Proceedings of the ASME 28th International Conference on Ocean, Offshore and Arctic Engineering OMAE2009 May 31 - June 5, 2009, Honolulu, Hawaii

Proceedings of the ASME 28th International Conference on Ocean, Offshore and Arctic Engineering OMAE2009 May 31 - June 5, 2009, Honolulu, Hawaii Proceedings of he ASME 28h Inernaional Conference on Ocean, Offshore and Arcic Engineering OMAE29 May 31 - June 5, 29, Honolulu, Hawaii OMAE29-79385 ANALYSIS OF THE TUNNEL IMMERSION FOR THE BUSAN-GEOJE

More information

Methods for Estimating Term Structure of Interest Rates

Methods for Estimating Term Structure of Interest Rates Mehods for Esimaing Term Srucure of Ineres Raes Iskander Karibzhanov Absrac This paper compares differen inerpolaion algorihms for consrucing yield curves: cubic splines, linear and quadraic programming,

More information

What is a Practical (ASTM C 618) SAI--Strength Activity Index for Fly Ashes that can be used to Proportion Concretes Containing Fly Ash?

What is a Practical (ASTM C 618) SAI--Strength Activity Index for Fly Ashes that can be used to Proportion Concretes Containing Fly Ash? 2017 World of Coal Ash (WOCA) Conference in Lexingon, KY - May 9-11, 2017 hp://www.flyash.info/ Wha is a Pracical (ASTM C 618) SAI--Srengh Aciviy Index for Fly Ashes ha can be used o Proporion Concrees

More information

INSTRUCTIONS FOR USE. This file can only be used to produce a handout master:

INSTRUCTIONS FOR USE. This file can only be used to produce a handout master: INSTRUCTIONS OR USE This file can only be used o produce a handou maser: Use Prin from he ile menu o make a prinou of he es. You may no modify he conens of his file. IMPORTNT NOTICE: You may prin his es

More information

ScienceDirect. Cycling Power Optimization System Using Link Models of Lower Limbs with Cleat-Shaped Biaxial Load Cells

ScienceDirect. Cycling Power Optimization System Using Link Models of Lower Limbs with Cleat-Shaped Biaxial Load Cells Available online a www.sciencedirec.com ScienceDirec Procedia Engineering 72 ( 20 ) 8 7 The 20 conference of he Inernaional Spors Engineering Associaion Cycling Power Opimizaion Sysem Using ink Models

More information

EXAMINING THE FEASIBILITY OF PAIRED CLOSELY-SPACED PARALLEL APPROACHES

EXAMINING THE FEASIBILITY OF PAIRED CLOSELY-SPACED PARALLEL APPROACHES EXAMINING THE FEASIBILITY OF PAIRED CLOSELY-SPACED PARALLEL APPROACHES Seven J. Landry and Amy R. Priche Georgia Insiue of Technology Alana GA 30332-0205 ABSTRACT Paired closely-spaced parallel approaches

More information

Performance Attribution for Equity Portfolios

Performance Attribution for Equity Portfolios PERFORMACE ATTRIBUTIO FOR EQUITY PORTFOLIOS Performance Aribuion for Equiy Porfolios Yang Lu and David Kane Inroducion Many porfolio managers measure performance wih reference o a benchmark. The difference

More information

I t ' 4 ti. t ti. IQ:::: mass x heat of fusion (or heat of vaporization) I HEAT AND ITS MEASUREMENT. t t. t f I I I. Name

I t ' 4 ti. t ti. IQ:::: mass x heat of fusion (or heat of vaporization) I HEAT AND ITS MEASUREMENT. t t. t f I I I. Name HEAT AND TS MEASUREMENT Name a (or energy) can be measured in unis of calories or joules. When here is a,,,,,,nperaure change (AT), hea (Q) can be calculaed using his formula: During a phase change, we

More information

Urban public transport optimization by bus ways: a neural network-based methodology

Urban public transport optimization by bus ways: a neural network-based methodology Urban Transpor XIII: Urban Transpor and he Environmen in he 21s Cenury 347 Urban public ranspor opimizaion by bus ways: a neural nework-based mehodology M. Migliore & M. Caalano Deparmen of Transporaion

More information

Zelio Control Measurement Relays RM4L Liquid Level Relays

Zelio Control Measurement Relays RM4L Liquid Level Relays Zelio Conrol Measuremen elays FNCTIONS These devices monior he levels of conducive liquids. They conrol he acuaion of pumps or valves o regulae levels; hey are also suiable for proecing submersible pumps

More information

Dynamics of market correlations: Taxonomy and portfolio analysis

Dynamics of market correlations: Taxonomy and portfolio analysis Dynamics of marke correlaions: Taxonomy and porfolio analysis J.-P. Onnela, A. Chakrabori, and K. Kaski Laboraory of Compuaional Engineering, Helsinki Universiy of Technology, P.O. Box 9203, FIN-02015

More information

Flow Switch LABO-VHZ-S

Flow Switch LABO-VHZ-S Flow Swich S Volumeric flow swiching Almos no effec from differing viscosiies Versaile, configurable swiching oupu in push-pull design Robus consrucion Compac design Characerisics he VHZ gearwheel flow

More information

CHARACTERIZATION AND MODELING OF A PROPORTIONAL VALVE FOR CONTROL SYNTHESIS

CHARACTERIZATION AND MODELING OF A PROPORTIONAL VALVE FOR CONTROL SYNTHESIS CHARACTERIZATION AND MODELING OF A PROPORTIONAL VALVE FOR CONTROL SYNTHESIS Osama. OLABY, Xavier. BRN, Sylvie. SESMAT, Tanneguy. REDARCE and Eric. BIDEAX Laboraoire d Auomaique Indusrielle - hp://www-lai.insa-lyon.fr

More information

Rolling ADF Tests: Detecting Rational Bubbles in Greater China Stock Markets

Rolling ADF Tests: Detecting Rational Bubbles in Greater China Stock Markets Singapore Managemen Universiy Insiuional Knowledge a Singapore Managemen Universiy Disseraions and Theses Collecion (Open Access) Disseraions and Theses 2008 Rolling ADF Tess: Deecing Raional Bubbles in

More information

Instruction Manual. Rugged PCB type. 1 Terminal Block. 2 Function. 3 Series Operation and Parallel Operation. 4 Assembling and Installation Method

Instruction Manual. Rugged PCB type. 1 Terminal Block. 2 Function. 3 Series Operation and Parallel Operation. 4 Assembling and Installation Method Rugged PCB ype Insrucion Manual 1 Terminal Block Funcion.1...4.5.6.7 Inpu volage range Inrush curren limiing Overcurren proecion Overvolage proecion Oupu volage adjusmen range Isolaion Remoe ON/OFF E9

More information

The safe ships trajectory in a restricted area

The safe ships trajectory in a restricted area Scienific Journals Mariime Universiy of Szczecin Zeszyy Naukowe Akademia Morska w Szczecinie 214, 39(111) pp. 122 127 214, 39(111) s. 122 127 ISSN 1733-867 The safe ships rajecory in a resriced area Zbigniew

More information

LSU RISK ASSESSMENT FORM Please read How to Complete a Risk Assessment before completion

LSU RISK ASSESSMENT FORM Please read How to Complete a Risk Assessment before completion Please read How o Complee a Risk Assessmen before compleion EVENT OR ACTIVITY BEING RISK ASSESSED (add name of even where relevan) NAME OF DEPARTMENT Squad Training Neball DATE OF COMPLETION OF RISK ASSESSMENT

More information

A Statistical, Age-Structured, Life-History-Based Stock Assessment Model for Anadromous Alosa

A Statistical, Age-Structured, Life-History-Based Stock Assessment Model for Anadromous Alosa American Fisheries Sociey Symposium 35:275 283, 2003 2003 by he American Fisheries Sociey A Saisical, Age-Srucured, Life-Hisory-Based Sock Assessmen Model for Anadromous Alosa A. JAMIE F. GIBSON 1 Acadia

More information

Development of Urban Public Transit Network Structure Integrating Multi-Class Public Transit Lines and Transfer Hubs

Development of Urban Public Transit Network Structure Integrating Multi-Class Public Transit Lines and Transfer Hubs Developmen of Urban Public Transi Nework Srucure Inegraing Muli-Class Public Transi Lines and Transfer Hubs Zhenbao Wang 1, Anyan Chen 2 1College of Civil Engineering, Hebei Universiy of Engineering Handan,

More information

Real-time Stochastic Evacuation Models for Decision Support in Actual Emergencies

Real-time Stochastic Evacuation Models for Decision Support in Actual Emergencies Real-ime Sochasic Evacuaion Models for Decision Suppor in Acual Emergencies ARTURO CUESTA, DANIEL ALVEAR, ORLANDO ABREU and DELFÍN SILIÓ Transpors and echnology projecs and processes Universiy of Canabria

More information

WHO RIDE THE HIGH SPEED RAIL IN THE UNITED STATES THE ACELA EXPRESS CASE STUDY

WHO RIDE THE HIGH SPEED RAIL IN THE UNITED STATES THE ACELA EXPRESS CASE STUDY Proceedings of he 2010 Join Rail Conference JRC2010 April 27-29, 2010, Urbana, Illinois, USA JRC2010-36236 WHO RIDE THE HIGH SPEED RAIL IN THE UNITED STATES THE ACELA EXPRESS CASE STUDY Zhenhua Chen The

More information

Betting Against Beta

Betting Against Beta Being Agains Bea Andrea Frazzini and Lasse H. Pedersen * This draf: Ocober 5, 2010 Absrac. We presen a model in which some invesors are prohibied from using leverage and oher invesors leverage is limied

More information

Centre for Investment Research Discussion Paper Series. Momentum Profits and Time-Varying Unsystematic Risk

Centre for Investment Research Discussion Paper Series. Momentum Profits and Time-Varying Unsystematic Risk Cenre for Invesmen Research Discussion Paper Series Discussion Paper # 08-0* Momenum Profis and Time-Varying Unsysemaic Risk Cenre for Invesmen Research O'Rahilly Building, Room 3.0 Universiy College Cork

More information

Sensors and Actuators A: Physical

Sensors and Actuators A: Physical Sensors and Acuaors A 144 (2008) 354 360 Conens liss available a ScienceDirec Sensors and Acuaors A: Physical journal homepage: www.elsevier.com/locae/sna A micro-robo fish wih embedded SMA wire acuaed

More information

Reexamining Sports-Sentiment Hypothesis: Microeconomic Evidences from Borsa Istanbul

Reexamining Sports-Sentiment Hypothesis: Microeconomic Evidences from Borsa Istanbul Reexamining Spors-Senimen Hypohesis: Microeconomic Evidences from Borsa Isanbul Ka Wai Terence Fung +, Ender Demir, Chi Keung Marco Lau And Kwok Ho Chan * Absrac This paper examines he impac of inernaional

More information

Overreaction and Underreaction : - Evidence for the Portuguese Stock Market -

Overreaction and Underreaction : - Evidence for the Portuguese Stock Market - Overreacion and Underreacion : - Evidence for he Poruguese Sock Marke - João Vasco Soares* and Ana Paula Serra** March 2005 * Faculdade de Economia da Universidade do Poro ** (corresponding auhor) CEMPRE,

More information

Measuring Potential Output and Output Gap and Macroeconomic Policy: The Case of Kenya

Measuring Potential Output and Output Gap and Macroeconomic Policy: The Case of Kenya Universiy of Connecicu DigialCommons@UConn Economics Working Papers Deparmen of Economics Ocober 2005 Measuring Poenial Oupu and Oupu Gap and Macroeconomic Policy: The Case of Kenya Angelica E. Njuguna

More information

THE PERSISTENCY OF INTERNATIONAL DIVERSIFICATION BENEFITS: THE ROLE OF THE ASYMMETRY VOLATILITY MODEL

THE PERSISTENCY OF INTERNATIONAL DIVERSIFICATION BENEFITS: THE ROLE OF THE ASYMMETRY VOLATILITY MODEL ASIA ACADEMY of MAAGEMET JOURAL of ACCOUTIG and FIACE AAMJAF, Vol. 10, o. 1, 151 165, 014 THE PERSISTECY OF ITERATIOAL DIVERSIFICATIO BEEFITS: THE ROLE OF THE ASYMMETRY VOLATILITY MODEL Ung Sze ie 1*,

More information

A Dynamic Bioeconomic Model of Ivory Trade: Details and Extended Results

A Dynamic Bioeconomic Model of Ivory Trade: Details and Extended Results WORKING PAPER 2006-03 Resource Economics and Policy Analysis (REPA) Research Group Deparmen of Economics Universiy of Vicoria A Dynamic Bioeconomic Model of Ivory Trade: Deails and Exended Resuls G. Cornelis

More information

EFFECTS OF WIND SPEED ON WIND TURBINE AVAILABILITY

EFFECTS OF WIND SPEED ON WIND TURBINE AVAILABILITY EFFECTS OF WIND SPEED ON WIND TURBINE AVAILABILITY S. Faulsich 1, P. Lyding 1, P. J. Tavner 2 1 Fraunhofer Insiue for Wind Energy and Energy Sysem Technology (IWES) 2 Energy Group, School of Engineering,

More information

Machine Learning for Stock Selection

Machine Learning for Stock Selection Machine Learning for Sock Selecion Rober J. Yan Compuer Science Dep., The Uniersiy of Wesern Onario jyan@csd.uwo.ca Charles X. Ling Compuer Science Dep., The Uniersiy of Wesern Onario cling@csd.uwo.ca

More information

Time & Distance SAKSHI If an object travels the same distance (D) with two different speeds S 1 taking different times t 1

Time & Distance SAKSHI If an object travels the same distance (D) with two different speeds S 1 taking different times t 1 www.sakshieducaion.com Time & isance The raio beween disance () ravelled by an objec and he ime () aken by ha o ravel he disance is called he speed (S) of he objec. S = = S = Generally if he disance ()

More information

FIVE RISK FACTORS MODEL: PRICING SECTORAL PORTFOLIOS IN THE BRAZILIAN STOCK MARKET

FIVE RISK FACTORS MODEL: PRICING SECTORAL PORTFOLIOS IN THE BRAZILIAN STOCK MARKET Revisa Caarinense da Ciência Conábil, ISSN 1808-3781 - eissn 2237-7662, Florianópolis, SC, Brazil, v. 16, n. 48, p. 81-98, May/Aug. 2017 doi: 10.16930/2237-7662/rccc.v16n48.2376 Available a hp://revisa.crcsc.org.br

More information

Making Sense of Genetics Problems

Making Sense of Genetics Problems Bio 101 Ms. Bledsoe Making Sense of Geneics roblems Monohbrid crosses Le s sar wih somehing simle: crossing wo organisms and waching how one single rai comes ou in he offsring. Le s use eas, as Mendel

More information

Population size and exploitation of giant squid (Dosidicus gigas D Orbigny, 1835) in the Gulf of California, Mexico*

Population size and exploitation of giant squid (Dosidicus gigas D Orbigny, 1835) in the Gulf of California, Mexico* SCI. AR., 65 (): 75-8 SCIENIA ARINA 2 Populaion size and exploiaion of gian squid (Dosidicus gigas D Orbigny, 835) in he Gulf of California, exico* ENRIQUE ORALES-BOJÓRQUEZ, AGUSÍN HERNÁNDEZ-HERRERA 2,

More information

Cal. 7T85 INSTRUCTIONS (P. 3) BEDIENUNGSANLEITUNG (S. 27) INSTRUCTIONS (P. 51) ISTRUZIONI (P. 75) INSTRUCCIONES (P. 99) INSTRUÇÕES (P.

Cal. 7T85 INSTRUCTIONS (P. 3) BEDIENUNGSANLEITUNG (S. 27) INSTRUCTIONS (P. 51) ISTRUZIONI (P. 75) INSTRUCCIONES (P. 99) INSTRUÇÕES (P. Cal. 7T85 INSTRUCTIONS (P. 3) BEDIENUNGSANLEITUNG (S. 27) INSTRUCTIONS (P. 51) ISTRUZIONI (P. 75) INSTRUCCIONES (P. 99) INSTRUÇÕES (P. 123) (147 ) You are now he proud owner of a SEIKO Analogue Quarz Wach

More information

Managing the abundance of bison in Yellowstone National Park, winter Chris Geremia, P. J. White, and Rick Wallen September 12, 2011

Managing the abundance of bison in Yellowstone National Park, winter Chris Geremia, P. J. White, and Rick Wallen September 12, 2011 Managing he abundance of bison in Yellowsone Naional Park winer 2012 Chris Geremia P. J. Whie and Rick Wallen Sepember 12 2011 EXECUTIVE SUMMARY Background Yellowsone Naional Park (YNP) developed a plan

More information

Paul R. Drake Management School, University of Liverpool, Liverpool, UK

Paul R. Drake Management School, University of Liverpool, Liverpool, UK The curren issue and full ex archive of his journal is available a www.emeraldinsigh.com/0960-0035.hm Analysis of he bullwhip effec wih order baching in muli-echelon supply chains Maloub Hussain College

More information

Solubility of the gases

Solubility of the gases Solubility of the gases The principal atmospheric gases that go into solution are oxygen, nitrogen, carbon dioxide. All water exposed to atmosphere will have these gases in solution. Other gases in solution

More information

INSTALLATION AND OPERATION MANUAL

INSTALLATION AND OPERATION MANUAL IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS PLEASE READ THE ENTIRE CONTENTS OF THIS MANUAL PRIOR TO INSTALLATION AND OPERATION. BY PROCEEDING WITH LIFT INSTALLATION AND OPERATION YOU AGREE THAT

More information

Figure Vapor-liquid equilibrium for a binary mixture. The dashed lines show the equilibrium compositions.

Figure Vapor-liquid equilibrium for a binary mixture. The dashed lines show the equilibrium compositions. Another way to view this problem is to say that the final volume contains V m 3 of alcohol at 5.93 kpa and 20 C V m 3 of air at 94.07 kpa and 20 C V m 3 of air plus alcohol at 100 kpa and 20 C Thus, the

More information

OPTIMAL ENERGY SOURCE FOR AN ENVIRONMENTALLY-FRIENDLY GO-KART

OPTIMAL ENERGY SOURCE FOR AN ENVIRONMENTALLY-FRIENDLY GO-KART Journal of Ecological Engineering Volume 17, Issue 5, Nov. 016, pages 90 95 DOI: 10.1911/998993/65454 Research Aricle OPTIMAL ENERGY SOURCE FOR AN ENVIRONMENTALLY-FRIENDLY GO-KART Pior Zbigniew Filip 1,

More information

WORLD GROWTH AND INTERNATIONAL CAPITAL FLOWS IN THE XXI st CENTURY

WORLD GROWTH AND INTERNATIONAL CAPITAL FLOWS IN THE XXI st CENTURY CEPREMAP WORLD GROWTH AND INTERNATIONAL CAPITAL FLOWS IN THE XXI s CENTURY A prospecive analysis wih he INGENUE 2 model by he INGENUE TEAM Michel AGLIETTA and Vladimir BORGY (Cepii), Jean CHATEAU (Ocde),

More information

COMPARATIVE STUDY OF VELOCITY REDUCTION ON FEATHER AND SYNTHETIC SHUTTLECOCKS USING CORRECTED INITIAL VELOCITY DURING OVERHEAD SMASH

COMPARATIVE STUDY OF VELOCITY REDUCTION ON FEATHER AND SYNTHETIC SHUTTLECOCKS USING CORRECTED INITIAL VELOCITY DURING OVERHEAD SMASH Journal of Engineering Science and Technolog Special Issue on AASEC 6, Ocober (7) 9-5 School of Engineering, Talor s Uniersi COMPARATIVE STUDY OF VELOCITY REDUCTION ON FEATHER AND SYNTHETIC SHUTTLECOCKS

More information

INVERTER HEATPUMP FOR SWIMMING POOLS

INVERTER HEATPUMP FOR SWIMMING POOLS IVE HEATPUMP FO SWIMMIG POOS Insallaion & Insrucion Manual hea pumps 0-0071-1611 Table of conens 1. Preface 3. Specificaions.1 Performance Daa. Dimensions 6 3. Insallaion and Connecion 3.1 Hea Pump ocaion

More information

Clemco Industries Corp. ISO 9001 Certified

Clemco Industries Corp. ISO 9001 Certified Clemco Indusries Corp. ISO 9001 Cerified 6 cuf Classic Blas Machines Exclusively from... SIMPLE, RUGGED, RELIABLE More han 75 years of reliable field service have made Clemco blas machines he preferred

More information

Gas Laws V 1 V 2 T 1. Gas Laws.notebook. May 05, T = k P 1 V 1 = P 2 V 2. = 70 kpa. P. V = k. k = 1 atm = kpa

Gas Laws V 1 V 2 T 1. Gas Laws.notebook. May 05, T = k P 1 V 1 = P 2 V 2. = 70 kpa. P. V = k. k = 1 atm = kpa Gas Laws At constant temperature, all gases behave the same when compressed As increasing pressure is applied to a gas in a closed container, the volume of the gas decreases he product of pressure and

More information

Theory to Practice: Oxygen Transfer and the New ASCE Standard

Theory to Practice: Oxygen Transfer and the New ASCE Standard Theory to Practice: Oxygen Transfer and the New ASCE Standard Michael K. Stenrom, Shao-Yuan (Ben) Leu, and Pan Jiang Civil and Environmental Engineering Dept, UCLA, Los Angeles, CA ABSTRACT Oxygen transfer

More information

Original Article. Physiological characteristics and physical fitness of girls at the beginning of classes at the volleyball sports school

Original Article. Physiological characteristics and physical fitness of girls at the beginning of classes at the volleyball sports school Journal of Physical Educaion and Spor (JPES), 17(4), Ar 276, pp. 2467-2471, 2017 online ISSN: 2247-806X; p-issn: 2247 8051; ISSN - L = 2247-8051 JPES Original Aricle Physiological characerisics and physical

More information

connection Glen Smale discusses racing engine con rod technology with specialist manufacturers from around the world

connection Glen Smale discusses racing engine con rod technology with specialist manufacturers from around the world Making he connecion Glen Smale discusses racing engine con rod echnology wih specialis manufacurers from around he world Making he connecion necessary beween he op end and he boom end of he racing engine

More information

An Autonomous Blimp for the Wall Following Control.

An Autonomous Blimp for the Wall Following Control. An Auonomous Blimp for he Wall Following Conrol. Seung-Yong Oh *,**, Chi- Won Roh *, Sung- Chul Kang *, Eun-ai Kim ** * Inelligen Roboics Research Cener, Korea Insiue of Science an echnology, Seoul, Korea

More information

SWIMMING POOL HEAT PUMP UNITS. Installation & Instruction Manual DURA - series

SWIMMING POOL HEAT PUMP UNITS. Installation & Instruction Manual DURA - series SWIMMIG POO HEAT PUMP UITS Insallaion & Insrucion Manual DUA - series ev. 1.12 29.07.2014 Conens SWIMMIG POO HEAT PUMP UITS... 1! Conens... 2! 1. Preface... 3! 2. Specificaions... 4! 2.1 Technical daa

More information

Optimal Staged Self-Assembly of General Shapes

Optimal Staged Self-Assembly of General Shapes Opimal Saged Sel-Assemly o General Shapes Cameron Chalk, Eric Marinez, Roer Schweller 3, Luis Vega 4, Andrew Winslow 5, and im Wylie 6 Deparmen o Compuer Science, Universiy o eas Rio Grande Valley, Brownsville,

More information

Chapter 13 Gases, Vapors, Liquids, and Solids

Chapter 13 Gases, Vapors, Liquids, and Solids Chapter 13 Gases, Vapors, Liquids, and Solids Property is meaning any measurable characteristic of a substance, such as pressure, volume, or temperature, or a characteristic that can be calculated or deduced,

More information

DRINKING WATER PIPE SYSTEM. The blue line

DRINKING WATER PIPE SYSTEM. The blue line DRINKING WATER PIPE SYSTEM The blue line Hanbook 2014 Inex The following coonly use abbreviaions are foun in his caalogue. Abbreviaion Descripion Uni A Cross-secional area 2 Ousie iameer of pipe i Insie

More information

Centrifugal Fans belt driven. TD_CFB-ADY_EN Issue 1.1 EN July 2013 ADY

Centrifugal Fans belt driven. TD_CFB-ADY_EN Issue 1.1 EN July 2013 ADY enrifugal ans bel driven TD_-DY_N Issue 1.1 N July 013 DY 1 Nicora ebhard S.p.. cerifi es ha he fan shon herein is licensed o bear he Seal. The raings shon are based on ess and procedures performed in

More information

Analysis of Shear Lag in Steel Angle Connectors

Analysis of Shear Lag in Steel Angle Connectors University of New Hampshire University of New Hampshire Scholars' Repository Honors Theses and Capstones Student Scholarship Spring 2013 Analysis of Shear Lag in Steel Angle Connectors Benjamin Sawyer

More information

AN ANALYSIS OF THE ECONOMIC EFFECT OF A ROAD DIET IN ELIZABETHTOWN AND GEORGETOWN, KENTUCKY

AN ANALYSIS OF THE ECONOMIC EFFECT OF A ROAD DIET IN ELIZABETHTOWN AND GEORGETOWN, KENTUCKY AN ANALYSIS OF THE ECOMIC EFFECT OF A ROAD DIET IN ELIZABETHTOWN AND GEORGETOWN, KENTUCKY MARCH 2014 This repor was produced a he reques of he Ron Sco, Ciy Manager for Danville, Kenucky, under he supervision

More information

DIN, EN, ASTM. Металлопрокат и трубы по стандартам. Поставляем металлопрокат по стандарту ASME 16.48

DIN, EN, ASTM. Металлопрокат и трубы по стандартам.  Поставляем металлопрокат по стандарту ASME 16.48 Металлопрокат и трубы по стандартам DIN, EN, STM Поставляем металлопрокат по стандарту SME 16.48 Для заказа металлопроката или получения консультации обращайтесь по следующим контактам: Россия: +7 (495)

More information

US 9,615,553 B2 Apr. 11,2017

US 9,615,553 B2 Apr. 11,2017 111111111111111111111111111111111111111111111111111111111111111111111111111 US009615553B2 (12) Unied Saes Paen Coniglio e al. (10) Paen No.: (45) Dae of Paen: US 9,615,553 B2 Apr. 11,2017 (54) ARTIFICIAL

More information

4.) There are no forces of attraction or repulsion between gas particles. This means that

4.) There are no forces of attraction or repulsion between gas particles. This means that KINETIC MOLECULAR (K-M) THEORY OF MATTER NOTES - based on the idea that particles of matter are always in motion - assumptions of the K-M Theory 1.) Gases consist of large numbers of tiny particles that

More information

29 B ROUTE Bus Times Summer NOTES a = Time at Vicarage Way. * = On Schooldays bus operates up to 5 minutes later.

29 B ROUTE Bus Times Summer NOTES a = Time at Vicarage Way. * = On Schooldays bus operates up to 5 minutes later. Brighon Lewes Ringmer / Touris Aracions Lewes for Hisoric own wih Casle; Isfield for Lavender Line Railway; for Spa Valley Railway, Paniles CiySAVER ickes are only valid beween Brighon and Falmer. nework

More information

Behavior of Gases Chapter 12 Assignment & Problem Set

Behavior of Gases Chapter 12 Assignment & Problem Set Behavior of Gases Name Warm-Ups (Show your work for credit) Date 1. Date 2. Date 3. Date 4. Date 5. Date 6. Date 7. Date 8. Behavior of Gases 2 Study Guide: Things You Must Know Vocabulary (know the definition

More information

Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy. A Law for Scuba Divers

Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy. A Law for Scuba Divers 1/6 2009/11/14 上午 11:12 Manage this Assignment: Chapter 18 Due: 12:00am on Saturday, July 3, 2010 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy

More information

of Gases Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of General Properties

of Gases Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of General Properties BEHAVIOR OF GASES Chapter 12 1 Importance of Gases 2 Hot Air Balloons How Do They Work? 3 Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of sodium azide,, NaN 3. 2 NaN

More information

SOLAR 93 THE 1993 AMERICAN SOLAR ENERGY SOCIETY ANNUAL CONFERENCE. Washington, DC April 22028,1993. Editors: S. M. Burley M. E.

SOLAR 93 THE 1993 AMERICAN SOLAR ENERGY SOCIETY ANNUAL CONFERENCE. Washington, DC April 22028,1993. Editors: S. M. Burley M. E. SOLAR 93 THE 1993 AMERICAN SOLAR ENERGY SOCIETY ANNUAL CONFERENCE Washington, DC April 22028,1993 Editors: S. M. Burley M. E. Arden American Solar Energy Society U.S. Section of the International Solar

More information

Name Date Class STATES OF MATTER. SECTION 13.1 THE NATURE OF GASES (pages )

Name Date Class STATES OF MATTER. SECTION 13.1 THE NATURE OF GASES (pages ) Name Date Class 3 SAES OF MAER SECION 3. HE NAURE OF GASES (pages 385 389) his section introduces the kinetic theory and describes how it applies to gases. It defines gas pressure and explains how temperature

More information

CP Chapter 13/14 Notes The Property of Gases Kinetic Molecular Theory

CP Chapter 13/14 Notes The Property of Gases Kinetic Molecular Theory CP Chapter 13/14 Notes The Property of Gases Kinetic Molecular Theory Kinetic Molecular Theory of Gases The word kinetic refers to. Kinetic energy is the an object has because of its motion. Kinetic Molecular

More information

Integration of Impact Factors of Gas-Liquid Transfer Rate

Integration of Impact Factors of Gas-Liquid Transfer Rate Zhiyong Duan and James L. Martin Department of Civil Engineering Mississippi State University P.O. Box 9546 Mississippi State, MS 39762-9546 662-325-2902 E-mail: zd9@msstate.edu ABSTRACT The gas transfer

More information

Experimental Study of an Air Lift Pump

Experimental Study of an Air Lift Pump Engineering, Technology & Applied Science Research Vol. 7, No. 3, 217, 1676-168 1676 Experimental Study of an Air Lift Pump Fawzy Sh. Abou Taleb Mechanical Engineering Department Engineering College Northern

More information

Diffusivity in Gases Experiment ver 05.10a

Diffusivity in Gases Experiment ver 05.10a Diffusivity in Gases Experiment ver 05.0a number of experimental techniques have been developed for the measurement of the diffusivity in gases. Both steady-state and unsteady-state methods are used. However,

More information

Applied Physics Topics 2

Applied Physics Topics 2 Applied Physics Topics 2 Dr Andrey Varvinskiy Consultant Anaesthetist Torbay Hospital, UK EDAIC Paper B Lead and Examiner TOPICS 2 Gas Laws Other Laws: Dalton, Avogadro Critical temperature Critical pressure

More information

Dynamic Simulation and Control of Vapor Recompression Column

Dynamic Simulation and Control of Vapor Recompression Column The 7 th International Chemical Engineering Congress & Exhibition (IChEC 2011) Kish, Iran, 21-24 November, 2011 Dynamic Simulation and Control of Vapor Recompression Column Hojjat Dehghani, Mohammad Ali

More information

IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY

IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY AERATION IN WASTEWATER Municipal sewer collection systems-odor Mgmt. Lift and transfer stations Lagoons / Retention Ponds BOD / COD treatment Enhanced

More information

Slide 1. Slide 2. Slide 3 What do YOU know about oxygen? Dissolved Oxygen. Oxygen. I can t breath in the water but the fish can!

Slide 1. Slide 2. Slide 3 What do YOU know about oxygen? Dissolved Oxygen. Oxygen. I can t breath in the water but the fish can! Slide 1 Dissolved Oxygen I can t breath in the water but the fish can! Slide 2 Oxygen Oxygen is one of the fundamental resources required by life forms on Earth. Aquatic ecosystems have a wide assortment

More information

Fall 2004 Homework Problem Set 9 Due Wednesday, November 24, at start of class

Fall 2004 Homework Problem Set 9 Due Wednesday, November 24, at start of class 0.30 Fall 004 Homework Problem Set 9 Due Wednesday, November 4, at start of class Part A. Consider an iron surface which serves as a catalyst for the production of ammonia from nitrogen and hydrogen. The

More information

Chapter 13. Gases. Copyright Cengage Learning. All rights reserved 1

Chapter 13. Gases. Copyright Cengage Learning. All rights reserved 1 Chapter 13 Gases Copyright Cengage Learning. All rights reserved 1 Section 13.1 Pressure Why study gases? An understanding of real world phenomena. An understanding of how science works. Copyright Cengage

More information

LOW PRESSURE EFFUSION OF GASES revised by Igor Bolotin 03/05/12

LOW PRESSURE EFFUSION OF GASES revised by Igor Bolotin 03/05/12 LOW PRESSURE EFFUSION OF GASES revised by Igor Bolotin 03/05/ This experiment will introduce you to the kinetic properties of low-pressure gases. You will make observations on the rates with which selected

More information

Effect of channel slope on flow characteristics of undular hydraulic jumps

Effect of channel slope on flow characteristics of undular hydraulic jumps River Basin Management III 33 Effect of channel slope on flow characteristics of undular hydraulic jumps H. Gotoh, Y. Yasuda & I. Ohtsu Department of Civil Engineering, College of Science and Technology,

More information

Lecture Presentation. Chapter 10. Gases. John D. Bookstaver St. Charles Community College Cottleville, MO Pearson Education, Inc.

Lecture Presentation. Chapter 10. Gases. John D. Bookstaver St. Charles Community College Cottleville, MO Pearson Education, Inc. Lecture Presentation Chapter 10 John D. Bookstaver St. Charles Community College Cottleville, MO Characteristics of Unlike liquids and solids, gases Expand to fill their containers. Are highly compressible.

More information

Elements that exist as gases at 25 o C and 1 atmosphere H 2, N 2, O 2, F 2, Cl 2, He, Ne, Ar, Kr, Xe, Rn

Elements that exist as gases at 25 o C and 1 atmosphere H 2, N 2, O 2, F 2, Cl 2, He, Ne, Ar, Kr, Xe, Rn AP Chemistry Chapter 5 Sections 5. 5.9 Note Organizer Pressure, The Gas Laws of Boyle, Charles, and Avogadro, The Ideal Gas Law, Gas Stoichiometry, Dalton s Law of Partial Pressure, The Kinetic olecular

More information

CALCULATING THE SPEED OF SOUND IN NATURAL GAS USING AGA REPORT NO Walnut Lake Rd th Street Houston TX Garner, IA 50438

CALCULATING THE SPEED OF SOUND IN NATURAL GAS USING AGA REPORT NO Walnut Lake Rd th Street Houston TX Garner, IA 50438 CALCULATING THE SPEED OF SOUND IN NATURAL GAS USING AGA REPORT NO. 10 Jerry Paul Smith Joel Clancy JPS Measurement Consultants, Inc Colorado Engineering Experiment Station, Inc (CEESI) 13002 Walnut Lake

More information

of air-lift reactors based on bubble dynamics

of air-lift reactors based on bubble dynamics Indian Journal of Chemical Technology Vol. 5, July 1998, pp. 187-191 Modelling of air-lift reactors based on bubble dynamics Saikat Chakraborty+, Kajari Kargupta & Avijit Bhowal* Department of Chemical

More information

Chapter 13 Gases and Pressure. Pressure and Force. Pressure is the force per unit area on a surface. Force Area. Pressure =

Chapter 13 Gases and Pressure. Pressure and Force. Pressure is the force per unit area on a surface. Force Area. Pressure = Chapter 13 Gas Laws Chapter 13 Gases and Pressure Pressure and Force Pressure is the force per unit area on a surface. Pressure = Force Area Chapter 13 Gases and Pressure Gases in the Atmosphere The atmosphere

More information

LOW PRESSURE EFFUSION OF GASES adapted by Luke Hanley and Mike Trenary

LOW PRESSURE EFFUSION OF GASES adapted by Luke Hanley and Mike Trenary ADH 1/7/014 LOW PRESSURE EFFUSION OF GASES adapted by Luke Hanley and Mike Trenary This experiment will introduce you to the kinetic properties of low-pressure gases. You will make observations on the

More information

CTB3365x Introduction to Water Treatment

CTB3365x Introduction to Water Treatment CTB3365x Introduction to Water Treatment D4b Aeration Doris van Halem Did you know that there are not just gasses in your glass of sparkling coke, but also in the tap water you drink? Welcome to the water

More information

Reflux Condensation with Various Non-Condensable Gases

Reflux Condensation with Various Non-Condensable Gases Proceedings of the 3 rd World Congress on Mechanical, Chemical, and Material Engineering (MCM'17) Rome, Italy June 8 10, 2017 Paper No. HTFF 168 ISSN: 2369-8136 DOI: 10.11159/htff17.168 Reflux Condensation

More information

Kinetic Theory and Gases

Kinetic Theory and Gases Kinetic Theory and Gases Kinetic Theory Explains how temperature and pressure affect the motion of molecules http://exploration.grc.nasa.gov/education/rocket/images/state.gif 1 Hydraulics http://library.thinkquest.org/

More information

Kinetic Molecular Theory

Kinetic Molecular Theory Kinetic Molecular Theory Name Period Unit 7 HW 1 Worksheet (Goals 1 & 2) 1. Describe how gases, liquids, and solids compare using the following table. Volume (definite or indefinite) Molecular Motion (high,

More information

Natural Gas Desulfurization Process By MEA Amine: The preferable Engineering Design Procedure

Natural Gas Desulfurization Process By MEA Amine: The preferable Engineering Design Procedure Natural Gas Desulfurization Process By MEA Amine: The preferable Engineering Design Procedure Ribwar Abdulrahman 1, Ibtisam Kamal 2, Jagar Ali 3 1 Faculty of Engineering, KoyaUniversity, Kurdistan region,

More information

Gases and Pressure SECTION 11.1

Gases and Pressure SECTION 11.1 SECTION 11.1 Gases and In the chapter States of Matter, you read about the kineticmolecular theory of matter. You were also introduced to how this theory explains some of the properties of ideal gases.

More information

1.2 Example 1: A simple hydraulic system

1.2 Example 1: A simple hydraulic system Note: It is possible to use more than one fluid in the Hydraulic library. This is important because you can model combined cooling and lubrication systems of a library. The hydraulic library assumes a

More information