FUNNELLING WINDOW: EXPERIMENTAL STUDY OF VENTILATION PERFORMANCE

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "FUNNELLING WINDOW: EXPERIMENTAL STUDY OF VENTILATION PERFORMANCE"

Transcription

1 FUNNELLING WINDOW: EXPERIMENTAL STUDY OF VENTILATION PERFORMANCE Adolfo Gomez-Amador - Universidad de Colima Marcos Gonzalez-Trevizo - Universidad Michoacana de San Nicolas de Hidalgo Gonzalo Bojorquez-Morales - Universidad Autonoma de Baja California Jesus Komaba Quezada - Instituto Tecnologico de Chihuahua II José Francisco Armendariz Lopez Funnelling windows at the experimental setup. WHICH ARE YOUR ARCHITECTURAL (R)SOLUTIONS TO THE SOCIAL, ENVIRONMENTAL AND ECONOMIC CHALLENGES OF TODAY? Research Summary In order to improve the conditions of habitability in architectural spaces, especially in state-subsidized housing, devices with a low economic cost and low power consumption are recently studied. Under conditions of sub-humid warm climate; as the existing ones in Colima city (19º15 N; 103º44 W and 450m a.s.l.), the best passive design strategy to avoid electrical air conditioning is the natural ventilation. Due to this, there are some expectations to improve thermal comfort conditions in inhabited spaces through the use of design patterns in facade window that increases wind speed based on Venturi effect. This research reports on the operation of three devices with different design configurations to increase the wind speed, based on different inlet-outlet size ratio in the window. The cooling effect of the natural ventilation was estimated with the Szokolay s model dt=6vxv2. The study period was carried out from February to March, since this is the season when prevailing wind direction remains perpendicular to test modules where devices were installed. When air inlet reduction were 25%, 50% and 75% regarding the outlet size, the wind speed increases from 1.06 m/s to 1.33 m/s (25%), from 0.94 m/s to 1.28 m/s (37%) and from 0.90 m/s to 1.40 m/s (56%). This represents a potential decrease in temperature of about 0.28 C, 1.29 C y 1.86 C respectively, in compliance with Szokolay and mean speed values recorded in the inlet side of the window. Improving performance KEYWORDS: Natural Ventilation, Venturi effect, Window, Passive design. 205

2 FUNNELLING WINDOW: EXPERIMENTAL STUDY OF VENTILATION PERFORMANCE Fig 1: Funnelling windows at the experimental setup. WHICH ARE YOUR ARCHITECTURAL (R)SOLUTIONS TO THE SOCIAL, ENVIRONMENTAL AND ECONOMIC CHALLENGES OF TODAY? Research summary In order to improve the conditions of habitability in architectural spaces, especially in state-subsidized housing, devices with a low economic cost and low power consumption are recently studied. Under conditions of sub-humid warm climate; as the existing ones in Colima city (19º15'N; 103º44'W and 450m a.s.l.), the best passive design strategy to avoid electrical air conditioning is the natural ventilation. Due to this, there are some expectations to improve thermal comfort conditions in inhabited spaces through the use of design patterns in facade window that increases wind speed based on Venturi effect. This research reports on the operation of three devices with different design configurations to increase the wind speed, based on different inlet-outlet size ratio in the window. The cooling effect of the natural ventilation was estimated with the Szokolay s model dt=6vxv2. The study period was carried out from February to March, since this is the season when prevailing wind direction remains perpendicular to test modules where devices were installed. When air inlet reduction were 25%, 50% and 75% regarding the outlet size, the wind speed increases from 1.06 m/s to 1.33 m/s (25%), from 0.94 m/s to 1.28 m/s (37%) and from 0.90 m/s to 1.40 m/s (56%). This represents a potential decrease in temperature of about 0.28 C, 1.29 C y 1.86 C respectively, in compliance with Szokolay and mean speed values recorded in the inlet side of the window. Keywords: Natural Ventilation, Venturi effect, Window, Passive design.

3 1. Introduction Nowadays, there is an increasing concern for environmental issues, depletion of energy resources and the consequent difficulty for their supply. Therefore, devices that favor reducing energy consumption are indispensable in building design. The window, as architectural element is an opening for environmental control with multiple functions related to the indooroutdoor conditions. Despite the fact that building codes demand a wall-window size ratio, they not always possess a bioclimatic purpose. However, these openings have specific traits in each building and important differences in relation to the occupants. In Colima, sub-humid warm climate is predominant according to Köppen-Garcia s climate classification system, due to this, it is convenient to induce air movement, since it will improve thermal comfort of inhabitants by reducing humidity and cooling indoor areas. Climate conditions conform high and low air movement seasons; for this reason, it is essential to control indoor ventilation rates during throughout different strategies. This could be increased with the adequate design of windows based on Venturi effect; as well as changing prevailing wind direction to fulfill building comfort requirements. Fig 2: Colima: geographical location. 2. Research objectives This experimental study analyses the operation of three devices with different design configurations to increase the wind speed, based on different inlet-outlet size ratio on the window. Within the framework studies, Rivero (1988) considered important to take into consideration dimensional features of outside walls since these can have either a positive or a negative influence in capturing air during the times of high and low air movement. Gomez Amador, et al (2006) demonstrated that a window registers different air movement speeds at different heights, since warmer air will move toward the top of the opening, while García (2007), for his part, analysed ventilation performance with different materials used to build triangular shape lattices. The results showed that the lattices of adobe (hollow space 40x20 cms), decreased only 4% the wind speed at speeds of 2.13 m/s and by about 64% when speeds of 4.45 m/s were reached. Olgyay (1963) pointed out in his initial studies that it was better to introduce wind at 90 from the exposed surface (perpendicular). Since speed (V) depends on the relationship between inward and outward areas (r) and size of the inward opening (A); as far as the flow (Q) and the angle of incidence are constant as shown equation 1. V=Q/r*A*SenƟ (1) Szokolay (1990) proposed to use wind to offset higher temperature with an equation in order to evaluate ventilation efficiency at the moment of being induced to inhabitant spaces. DT=6V-V 2 (2) The equation above, calculates the equivalent reduction (DT) from the outdoor air temperature expressed in deegres Celcius using the wind speed (V) in metres per second. This is useful to estimate the wind speed required to improve thermal confort for people in a natural surrounding in indoor spaces where cross ventilation is inhibited by building common designs.

4 In a previous study, Gómez and Armendáriz (2008) analyzed the effect of increasing the ventilation rate by modifying the window frame planes in a house located in the city of Colima. In this study, the air outlet size was reduced by about 50% changing the inclinations of frame planes and with this, wind mean speed was increased by 40%. 3. Method In order to test the potential of a device which takes advantage of the prevailing wind conditions in seasons with low air movement, an experimental scenario was arranged using three modules in the testing field of the University of Colima. The design features of them simulates a building facade oriented due to northwest to capture prevailing wind gusts. Test modules are 1.22 m, 1.22 m and 2.54 m (length depth height). They have a front opening, it is 1.00 m by 1.10 m to provide the necessary air inlet to enable an inhibited crossventilation state and were built with materials traditionally used in Colima, clay brick parapet walls with a continuos reinforced concrete lintel and cement boards wich conform the three different wind concentrator configurations of each window. (Fig. 2). The device design consisted in different geometric features to conform a wind concentraror within the window opening; wind concentrator is defined as the plane with a 45 inclination angle fixed vertically or horizontally to reduce the air outlet section size of the window in up to 25%. As seen in figure 3, a different setup was used with its corresponding inlet-outlet ratio reduction ; at the beginning with one concentrator plane (25% size reduction), then with two concentrators (50% size reduction) up to the final version which consist on a complete funneling window that employs four concentrator surfaces (75% size reduction). Fig 3: Test module basic frame. Fig 4: Different window configurations. In this region, the annual prevailing winds come from the southeast and southwest. However, the study period was conducted during the months of February, March and the early dys of April, when the prevailing winds come from the north and therefore exert a direct impact on the experimental scenario compared to other seasons.

5 3.1 Data logging equipment The instruments used to capture and record weather information detect wind and temperature variations with a high degree of sensitivity. These were located in each air outlet plane geometric centre respectively, to see the ventilation changes generated by the window configuration proposed. The Skywatch unidirectional propeller anemometer-thermometer with dry-bulb temperature DBT sensor range from -40 C to 80 C, speed wind of 0.0~40.0 m/s, ±3.0% accuracy was used. significant potential of apparent temperature of 1.29 C. Finally, in the third configuration of the funnelling window, where the window has four planes and the reduction was 75%, the mean wind speed recorded achieved was 0.90 m/s in the inlet while 1.40 m/s at the outlet, which represents an average increase of 37% and a significant potential of apparent temperature of 1.86 C. As expected, the more the inlet-outlet reduction ratio increases, the more the wind speed recorded at the outlet point was higher. As seen in figure 6, the linear behaviour in wind speed is constant in compliance with the acceleration due to the opening reductions in window designs. Fig 5: Data logging equipment: anemometer 4. Results In the first test module, where the lowest inletoutlet reduction ratio (25%) was arranged in the window through the use of one concentrator plane, the mean wind speed recorded achieved was 1.06 m/s in the inlet and 1.33 m/s at the outlet point, which represents a temperature decreasing of 0.28 C according to Szokolay s equation. In the second configuration, where the window was modified using two planes and the reduction was 50%, the mean wind speed recorded achieved was 0.94 m/s in the inlet and 1.28 m/s at the outlet, which means that increasing on mean wind speed of 37% and a Fig 6: Data logging equipment: anemometer 5. Conclusions To identify the behavior of an air-concentrating window is more complex than just recording wind velocity. Any measurement system applied to a building will show limitations when trying to profile the behavior of the window, since wind direction and wind velocity are dynamic. However, considering the variation of the angle of wind incidence during the velocity recording process and having into account the assessment of velocity records with the calculated ones, the window behavior is favourable for a sensitive increment on indoor wind velocity. It is convenient to do further research that allow to estimate the behaviour of this kind of devices when wind

6 speeds are higher or when different uptaking angles of prevail winds are involved. 6. References Fuentes Freixanet, V. (2004). Natural ventilation: basic calculations for architecture. México, D.F.: Metropolitan Autonomous University. (in spanish) García Solórzano, L. A. (2007). The lattice in subhumid tropic traditional building techniques. The jarana as environmental control device. Master's degree thesis, University of Colima, Faculty of architecture and design. (in spanish) Gómez Amador, A., Alcántara Lomelí, A., y Alvarado Cabral, E. A. (2006). Window in sub-humid tropic building tradition. Palapa, 1, Second period (in spanish) Gómez-Amador, A., & Armendáriz-López, F. (2008). Ventilation performance in a funneling window. 25th Conference on Passive and Low Energy Architecture, Dublin. University College Dublin. Olgyay, V. (1963). Design with climate. Princeton, New Jersey: Princeton University Press. Rivero, R. (1988). Architecture and climate: thermal natural conditioning for northern hemisphere. México: UNAM. (in spanish) Santamouris, M., (2006). Ventilation for Comfort and Cooling: The state of the art. En Santamouris, M., y Wouters P. (Eds.), Building ventilation: The state of the art. (pp. 221). London.: Earthscan James & James. Szokolay, S. (2004). Introduction to Architectural Science: the basis of sustainable design. Oxford: Pergamon. Szokolay, S. (1990). House design for overheated environments. Memoria I National congress for design and environment (pages ). Colima: University of Colima-Federal Electricity Commission. (in spanish).

AN IMPROVED CROSS VENTILATION MODEL IN WINDY REGIONS

AN IMPROVED CROSS VENTILATION MODEL IN WINDY REGIONS AN IMPROVED CROSS VENTILATION MODEL IN WINDY REGIONS Ahmed A.Rizk, Professor Architectural Engineering Department, Tanta University, Egypt Yasser. A.Al- Samadony, Assistant Professor Mechanical Power Engineering

More information

Deborah Houssin-Agbomson, Jean-Yves Letellier, Philippe Renault, Simon Jallais

Deborah Houssin-Agbomson, Jean-Yves Letellier, Philippe Renault, Simon Jallais AN EXPERIMENTAL STUDY DEDICATED TO WIND INFLUENCE ON HELIUM BUILD-UP AND CONCENTRATION DISTRIBUTION INSIDE A 1-M 3 SEMI-CONFINED ENCLOSURE CONSIDERING HYDROGEN ENERGY APPLICATIONS CONDITIONS OF USE. Deborah

More information

Wind tunnel tests of a non-typical stadium roof

Wind tunnel tests of a non-typical stadium roof Wind tunnel tests of a non-typical stadium roof G. Bosak 1, A. Flaga 1, R. Kłaput 1 and Ł. Flaga 1 1 Wind Engineering Laboratory, Cracow University of Technology, 31-864 Cracow, Poland. liwpk@windlab.pl

More information

ScienceDirect. Rebounding strategies in basketball

ScienceDirect. Rebounding strategies in basketball Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 72 ( 2014 ) 823 828 The 2014 conference of the International Sports Engineering Association Rebounding strategies in basketball

More information

Acceleration: Galileo s Inclined Plane

Acceleration: Galileo s Inclined Plane Teacher s Notes Main Topic Subtopic Learning Level Technology Level Activity Type Motion Acceleration High Low Student Description: Use a water clock to measure a ball s acceleration as it rolls down an

More information

PLEA th Conference, Opportunities, Limits & Needs Towards an environmentally responsible architecture Lima, Perú 7-9 November 2012

PLEA th Conference, Opportunities, Limits & Needs Towards an environmentally responsible architecture Lima, Perú 7-9 November 2012 Natural Ventilation using Ventilation shafts Multiple Interconnected Openings in a Ventilation Shaft Reduce the Overall Height of the Shaft While Maintaining the Effectiveness of Natural Ventilation ABHAY

More information

A Study on the Effects of Wind on the Drift Loss of a Cooling Tower

A Study on the Effects of Wind on the Drift Loss of a Cooling Tower A Study on the Effects of Wind on the Drift Loss of a Cooling Tower Wanchai Asvapoositkul 1* 1 Department of Mechanical Engineering, Faculty of Engineering, King Mongkut s University of Technology Thonburi

More information

UNIVERSITY OF HONG KONG LIBRARY. Hong Kong Collection

UNIVERSITY OF HONG KONG LIBRARY. Hong Kong Collection UNIVERSITY OF HONG KONG LIBRARY Hong Kong Collection CODE OF PRACTICE ON WIND EFFECTS HONG KONG-1983 BUILDING DEVELOPMENT DEPARTMENT HONG KONG PRINTED AND PUBLISHED BY THE GOVERNMENT PRINTER, HONG KONG

More information

The validity of a rigid body model of a cricket ball-bat impact

The validity of a rigid body model of a cricket ball-bat impact Available online at www.sciencedirect.com Procedia Engineering 34 (2012 ) 682 687 9 th Conference of the International Sports Engineering Association (ISEA) The validity of a rigid body model of a cricket

More information

AIRFLOW AROUND CONIC TENSILE MEMBRANE STRUCTURES

AIRFLOW AROUND CONIC TENSILE MEMBRANE STRUCTURES AIRFLOW AROUND CONIC TENSILE MEMBRANE STRUCTURES A. M. ElNokaly 1, J. C. Chilton 2 and R. Wilson 1 1 School of the Built Environment, University of Nottingham, Nottingham, NG7 2RD, UK 2 School of Architecture,

More information

AVEMS & UNICLIMA joint Position paper on Regulation (EU) No.1253/2014 Paris, June 8 th

AVEMS & UNICLIMA joint Position paper on Regulation (EU) No.1253/2014 Paris, June 8 th AVEMS & UNICLIMA joint Position paper on Regulation (EU) No.1253/2014 Paris, June 8 th Considerations about hybrid and low pressure ventilation fans in the regulation 1253/2014 1) Definition of hybrid

More information

Natural Ventilation Applications in Hot-humid Climate: A Preliminary Design for the College of Design at NTUST

Natural Ventilation Applications in Hot-humid Climate: A Preliminary Design for the College of Design at NTUST Natural Ventilation Applications in Hot-humid Climate: A Preliminary Design for the College of Design at NTUST Ming-Tse Lin Associated Architect Bio-Architecture Formosana Firm Taipei, Taiwan Hao-Yang

More information

WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION

WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION S. Pindado, J. Meseguer, J. M. Perales, A. Sanz-Andres and A. Martinez Key words: Wind loads, bridge construction, yawing moment. Abstract.

More information

INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION

INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION Proceedings of COBEM 2009 Copyright 2009 by ABCM 20th International Congress of Mechanical Engineering November 15-20, 2009, Gramado, RS, Brazil INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION Helena

More information

Performance Evaluation of Four-Sided Square Wind Catchers with Different Geometries by Numerical Method

Performance Evaluation of Four-Sided Square Wind Catchers with Different Geometries by Numerical Method Article Performance Evaluation of Four-Sided Square Wind Catchers with Different Geometries by Numerical Method Maryam Hossein Ghadiri 1,a, Nik Lukman Nik Ibrahim 1,b, and Mohd Farid Mohamed 2,c 1, 2 Department

More information

Outside Air Nonresidential HVAC Stakeholder Meeting #2 California Statewide Utility Codes and Standards Program

Outside Air Nonresidential HVAC Stakeholder Meeting #2 California Statewide Utility Codes and Standards Program 1 Outside Air Nonresidential HVAC Stakeholder Meeting #2 California Statewide Utility Codes and Standards Program Jim Meacham, CTG Energetics Agenda 2 In Situ Testing Results Reduced Ventilation after

More information

EXPERIMENTAL STUDY OF WIND PRESSURES ON IRREGULAR- PLAN SHAPE BUILDINGS

EXPERIMENTAL STUDY OF WIND PRESSURES ON IRREGULAR- PLAN SHAPE BUILDINGS BBAA VI International Colloquium on: Bluff Bodies Aerodynamics & Applications Milano, Italy, July, 2-24 8 EXPERIMENTAL STUDY OF WIND PRESSURES ON IRREGULAR- PLAN SHAPE BUILDINGS J. A. Amin and A. K. Ahuja

More information

RELIABILITY ASSESSMENT, STATIC AND DYNAMIC RESPONSE OF TRANSMISSION LINE TOWER: A COMPARATIVE STUDY

RELIABILITY ASSESSMENT, STATIC AND DYNAMIC RESPONSE OF TRANSMISSION LINE TOWER: A COMPARATIVE STUDY RELIABILITY ASSESSMENT, STATIC AND DYNAMIC RESPONSE OF TRANSMISSION LINE TOWER: A COMPARATIVE STUDY Yusuf Mansur Hashim M. Tech (Structural Engineering) Student, Sharda University, Greater Noida, (India)

More information

Development of Biomimicry Wind Louver Surface Design

Development of Biomimicry Wind Louver Surface Design International Proceedings of Chemical, Biological and Environmental Engineering, V0l. 93 (2016) DOI: 10.7763/IPCBEE. 2016. V93. 6 Development of Biomimicry Wind Louver Surface Design Jaepil Choi 1, Donghwa

More information

Wind Flow Validation Summary

Wind Flow Validation Summary IBHS Research Center Validation of Wind Capabilities The Insurance Institute for Business & Home Safety (IBHS) Research Center full-scale test facility provides opportunities to simulate natural wind conditions

More information

Experimental Investigation Of Flow Past A Rough Surfaced Cylinder

Experimental Investigation Of Flow Past A Rough Surfaced Cylinder (AET- 29th March 214) RESEARCH ARTICLE OPEN ACCESS Experimental Investigation Of Flow Past A Rough Surfaced Cylinder Monalisa Mallick 1, A. Kumar 2 1 (Department of Civil Engineering, National Institute

More information

NUMERICAL SIMULATION OF EFFECT OF URBAN GEOMETRY LAYOUTS ON WIND AND NATURAL VENTILATION UNDER MEDITERRANEAN CLIMATE

NUMERICAL SIMULATION OF EFFECT OF URBAN GEOMETRY LAYOUTS ON WIND AND NATURAL VENTILATION UNDER MEDITERRANEAN CLIMATE NUMERICAL SIMULATION OF EFFECT OF URBAN GEOMETRY LAYOUTS ON WIND AND NATURAL VENTILATION UNDER MEDITERRANEAN CLIMATE BOUCHAHM YASMINA 1, FATIHA BOURBIA 2 AND BOUKETTA SAMIRA 3 1 Laboratory bioclimatic

More information

Available online at ScienceDirect. Procedia Engineering 161 (2016 )

Available online at  ScienceDirect. Procedia Engineering 161 (2016 ) Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 161 (216 ) 1845 1851 World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium 216, WMCAUS 216 Experimental

More information

Available online at ScienceDirect. Procedia Engineering 112 (2015 )

Available online at  ScienceDirect. Procedia Engineering 112 (2015 ) Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 112 (2015 ) 540 545 7th Asia-Pacific Congress on Sports Technology, APCST 2015 Movement variability of professional pool billiards

More information

Experimental Determination of Temperature and Pressure Profile of Oil Film of Elliptical Journal Bearing

Experimental Determination of Temperature and Pressure Profile of Oil Film of Elliptical Journal Bearing International Journal of Advanced Mechanical Engineering. ISSN 2250-3234 Volume 4, Number 5 (2014), pp. 469-474 Research India Publications http://www.ripublication.com Experimental Determination of Temperature

More information

Evaluation of the Relationship between Natural Ventilation and the Grouping of Five Year Old Children in a Kindergarten Classroom of Medellin

Evaluation of the Relationship between Natural Ventilation and the Grouping of Five Year Old Children in a Kindergarten Classroom of Medellin PLEA - 28th Conference, Opportunities, Limits & Needs Towards an environmentally responsible architecture Lima, Perú 7-9 November Evaluation of the Relationship between Natural Ventilation and the Grouping

More information

Basketball free-throw rebound motions

Basketball free-throw rebound motions Available online at www.sciencedirect.com Procedia Engineering 3 () 94 99 5 th Asia-Pacific Congress on Sports Technology (APCST) Basketball free-throw rebound motions Hiroki Okubo a*, Mont Hubbard b a

More information

An Investigation into the Capsizing Accident of a Pusher Tug Boat

An Investigation into the Capsizing Accident of a Pusher Tug Boat An Investigation into the Capsizing Accident of a Pusher Tug Boat Harukuni Taguchi, National Maritime Research Institute (NMRI) taguchi@nmri.go.jp Tomihiro Haraguchi, National Maritime Research Institute

More information

OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL. Rehan Yousaf 1, Oliver Scherer 1

OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL. Rehan Yousaf 1, Oliver Scherer 1 OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL Rehan Yousaf 1, Oliver Scherer 1 1 Pöyry Infra Ltd, Zürich, Switzerland ABSTRACT Gotthard Base Tunnel with its 57 km

More information

JAR-23 Normal, Utility, Aerobatic, and Commuter Category Aeroplanes \ Issued 11 March 1994 \ Section 1- Requirements \ Subpart C - Structure \ General

JAR-23 Normal, Utility, Aerobatic, and Commuter Category Aeroplanes \ Issued 11 March 1994 \ Section 1- Requirements \ Subpart C - Structure \ General JAR 23.301 Loads \ JAR 23.301 Loads (a) Strength requirements are specified in terms of limit loads (the maximum loads to be expected in service) and ultimate loads (limit loads multiplied by prescribed

More information

Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations

Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations International Journal on Marine Navigation and Safety of Sea Transportation Volume 4 Number 3 September 2010 Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations P.

More information

SUBPART C - STRUCTURE

SUBPART C - STRUCTURE SUBPART C - STRUCTURE GENERAL CS 23.301 Loads (a) Strength requirements are specified in terms of limit loads (the maximum loads to be expected in service) and ultimate loads (limit loads multiplied by

More information

1700 Webster Street Oakland, CA. Final Report. Pedestrian Wind Conditions Consultation Wind Tunnel Tests RWDI # July 16, 2015

1700 Webster Street Oakland, CA. Final Report. Pedestrian Wind Conditions Consultation Wind Tunnel Tests RWDI # July 16, 2015 Tel: 519.823.1311 Fax: 519.823.1316 Rowan Williams Davies & Irwin Inc. 650 Woodlawn Road West Guelph, Ontario, Canada N1K 1B8 1700 Webster Street Oakland, CA Final Report Pedestrian Wind Conditions Consultation

More information

A computational study on structural barrier to vertical spread of window spill plume along building exterior façade under external wind

A computational study on structural barrier to vertical spread of window spill plume along building exterior façade under external wind 2nd International Conference on Information, Electronics and Computer (ICIEAC 2014 A computational study on structural barrier to vertical spread of window spill plume along building exterior façade under

More information

APPLICATION OF COMPUTATIONAL FLUID DYNAMICS (CFD) IN WIND ANALYSIS OF TALL BUILDINGS. Damith Mohotti, Priyan Mendis, Tuan Ngo

APPLICATION OF COMPUTATIONAL FLUID DYNAMICS (CFD) IN WIND ANALYSIS OF TALL BUILDINGS. Damith Mohotti, Priyan Mendis, Tuan Ngo APPLICATION OF COMPUTATIONAL FLUID DYNAMICS (CFD) IN WIND ANALYSIS OF TALL BUILDINGS Damith Mohotti, Priyan Mendis, Tuan Ngo Department of Infrastructures Engineering, The University of Melbourne, Victoria,

More information

WAVE PROPAGATION ON A FLUME: PHYSICAL MODELLING

WAVE PROPAGATION ON A FLUME: PHYSICAL MODELLING WAVE PROPAGATION ON A FLUME: PHYSICAL MODELLING J. M. P. Conde a,b,c, R. Reis b, C. J. Fortes b, and D. R. C. B. Neves b a Universidade Nova de Lisboa Faculty of Science and Technology Dep. Mechanical

More information

MTS Restan. Automatic System for Residual Stress Measurement by Hole-Drilling

MTS Restan. Automatic System for Residual Stress Measurement by Hole-Drilling Automatic System for Residual Stress The MTS3000 - Restan system for measuring residual stresses Fully automatic drilling and acquisition process ensuring high repeatability High speed drilling (400,000

More information

Influence of wind direction on noise emission and propagation from wind turbines

Influence of wind direction on noise emission and propagation from wind turbines Influence of wind direction on noise emission and propagation from wind turbines Tom Evans and Jonathan Cooper Resonate Acoustics, 97 Carrington Street, Adelaide, South Australia 5000 ABSTRACT Noise predictions

More information

Computational fluid dynamics analysis of a mixed flow pump impeller

Computational fluid dynamics analysis of a mixed flow pump impeller MultiCraft International Journal of Engineering, Science and Technology Vol. 2, No. 6, 2010, pp. 200-206 INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND TECHNOLOGY www.ijest-ng.com 2010 MultiCraft Limited.

More information

Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc.

Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc. Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc. 1 ANSYS, Inc. September 12, Fire and safety related applications Gas Dispersion and Ventilation Formation of combustible

More information

Determination of the Design Load for Structural Safety Assessment against Gas Explosion in Offshore Topside

Determination of the Design Load for Structural Safety Assessment against Gas Explosion in Offshore Topside Determination of the Design Load for Structural Safety Assessment against Gas Explosion in Offshore Topside Migyeong Kim a, Gyusung Kim a, *, Jongjin Jung a and Wooseung Sim a a Advanced Technology Institute,

More information

Gas Injection for Hydrodynamic Slug Control

Gas Injection for Hydrodynamic Slug Control Proceedings of the IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, Norwegian University of Science and Technology, Trondheim, Norway, May 3 - June, ThB.4 Gas Injection for Hydrodynamic

More information

HumiSys HF High Flow RH Generator

HumiSys HF High Flow RH Generator HumiSys HF High Flow RH Generator Designed, built, and supported by InstruQuest Inc. Versatile Relative Humidity Generation and Multi-Sensor System The HumiSys HF is a high flow version of the previously

More information

Local Winds & Microclimates. Unit 2- Module 1

Local Winds & Microclimates. Unit 2- Module 1 Local Winds & Microclimates Unit 2- Module 1 Objectives Overview of local winds (sea & land breezes, valley winds) Overview of microclimates (valley, urban, woodland) Local Winds Local Winds Local winds

More information

Increase in Evaporation Caused by Running Spa Jets swhim.com

Increase in Evaporation Caused by Running Spa Jets swhim.com Increase in Evaporation Caused by Running Spa Jets swhim.com Nomenclature A pipe cross-section area, m D water inlet diameter of the venturi tube nozzle, mm diameter of small end of the throat of the venturi

More information

IJSER. Modified Geometry of Mast to Reduce Smoke Ingress Problem in Naval Ship Using Flow Visualization Study of Exhaust Smoke.

IJSER. Modified Geometry of Mast to Reduce Smoke Ingress Problem in Naval Ship Using Flow Visualization Study of Exhaust Smoke. 30 Modified Geometry of Mast to Reduce Smoke Ingress Problem in Naval Ship Using Flow Visualization Study of Exhaust Smoke Abstract: One of the challenges in the ship building is to avoid the smoke ingress

More information

Testing and Validation of the Triton Sodar

Testing and Validation of the Triton Sodar Testing and Validation of the Triton Sodar September 24, 2008 AWEA Resource Assessment Workshop Ron Nierenberg, Consulting Meteorologist Liz Walls, Second Wind Inc. Ron Consulting Nierenberg Meteorologist

More information

Induced Drag Reduction for Modern Aircraft without Increasing the Span of the Wing by Using Winglet

Induced Drag Reduction for Modern Aircraft without Increasing the Span of the Wing by Using Winglet International Journal of Mechanical & Mechatronics Engineering IJMME-IJENS Vol:10 No:03 49 Induced Drag Reduction for Modern Aircraft without Increasing the Span of the Wing by Using Winglet Mohammad Ilias

More information

Study Of Windcatchers: The Mass Flow Rate And Inlet Air To The Building In Traditional Windcatchers

Study Of Windcatchers: The Mass Flow Rate And Inlet Air To The Building In Traditional Windcatchers Australian Journal of Basic and Applied Sciences, 6(10): 159-5, 01 ISSN 1991-8178 Study Of Windcatchers: The Mass Flow Rate And Inlet Air To The Building In Traditional Windcatchers Mohammad Moein Masrour,

More information

Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle

Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle RESEARCH ARTICLE OPEN ACCESS Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle Shyamshankar.M.B*, Sankar.V** *(Department of Aeronautical

More information

Failure Detection in an Autonomous Underwater Vehicle

Failure Detection in an Autonomous Underwater Vehicle Failure Detection in an Autonomous Underwater Vehicle Alec Orrick, Make McDermott, Department of Mechanical Engineering David M. Barnett, Eric L. Nelson, Glen N. Williams, Department of Computer Science

More information

Measuring range Δp (span = 100%) Pa

Measuring range Δp (span = 100%) Pa 4.4/ RLE 5: Volume-flow controller, continuous How energy efficiency is improved Enables demand-led volume flow control for the optimisation of energy consumption in ventilation systems. Areas of application

More information

The Effect of Impeller Width on the Location of BEP in a Centrifugal Pump

The Effect of Impeller Width on the Location of BEP in a Centrifugal Pump The Effect of Impeller Width on the Location of BEP in a Centrifugal Pump Vinayak Manur 1, Sharanabasappa 2, M. S. Hebbal 3 P.G.Students, Department of Mechanical Engineering, Basaveshwar Engineering College,

More information

SEMI-SPAN TESTING IN WIND TUNNELS

SEMI-SPAN TESTING IN WIND TUNNELS 25 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES SEMI-SPAN TESTING IN WIND TUNNELS S. Eder, K. Hufnagel, C. Tropea Chair of Fluid Mechanics and Aerodynamics, Darmstadt University of Technology

More information

Real Life Turbulence and Model Simplifications. Jørgen Højstrup Wind Solutions/Højstrup Wind Energy VindKraftNet 28 May 2015

Real Life Turbulence and Model Simplifications. Jørgen Højstrup Wind Solutions/Højstrup Wind Energy VindKraftNet 28 May 2015 Real Life Turbulence and Model Simplifications Jørgen Højstrup Wind Solutions/Højstrup Wind Energy VindKraftNet 28 May 2015 Contents What is turbulence? Description of turbulence Modelling spectra. Wake

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

Activity P07: Acceleration of a Cart (Acceleration Sensor, Motion Sensor)

Activity P07: Acceleration of a Cart (Acceleration Sensor, Motion Sensor) Activity P07: Acceleration of a Cart (Acceleration Sensor, Motion Sensor) Equipment Needed Qty Equipment Needed Qty Acceleration Sensor (CI-6558) 1 Dynamics Cart (inc. w/ Track) 1 Motion Sensor (CI-6742)

More information

Abstract. 1 Introduction

Abstract. 1 Introduction Developments in modelling ship rudder-propeller interaction A.F. Molland & S.R. Turnock Department of Ship Science, University of Southampton, Highfield, Southampton, S017 IBJ, Hampshire, UK Abstract A

More information

DESIGN AND CHARACTERISTICS OF A LARGE BOUNDARY- LAYER WIND TUNNEL WITH TWO TEST SECTIONS

DESIGN AND CHARACTERISTICS OF A LARGE BOUNDARY- LAYER WIND TUNNEL WITH TWO TEST SECTIONS The Seventh Asia-Pacific Conference on Wind Engineering, November 8-12, 2009, Taipei, Taiwan DESIGN AND CHARACTERISTICS OF A LARGE BOUNDARY- LAYER WIND TUNNEL WITH TWO TEST SECTIONS Kai Chen 1, Xin-Yang

More information

STABILITY OF MULTIHULLS Author: Jean Sans

STABILITY OF MULTIHULLS Author: Jean Sans STABILITY OF MULTIHULLS Author: Jean Sans (Translation of a paper dated 10/05/2006 by Simon Forbes) Introduction: The capsize of Multihulls requires a more exhaustive analysis than monohulls, even those

More information

DESIGN OPTIMIZATION FOR A PASSIVE MESH SCREEN WAVE ABSORBER FOR THE CCOB

DESIGN OPTIMIZATION FOR A PASSIVE MESH SCREEN WAVE ABSORBER FOR THE CCOB DESIGN OPTIMIZATION FOR A PASSIVE MESH SCREEN WAVE ABSORBER FOR THE CCOB Christian Klinghammer 1, Pedro Lomónaco Tonda 1 and Pablo Higuera Caubilla 1 A new passive wave absorber, consisting of multiple

More information

Conventional Ship Testing

Conventional Ship Testing Conventional Ship Testing Experimental Methods in Marine Hydrodynamics Lecture in week 34 Chapter 6 in the lecture notes 1 Conventional Ship Testing - Topics: Resistance tests Propeller open water tests

More information

SPIRIT III Radiometer Saturation Effect

SPIRIT III Radiometer Saturation Effect Utah State University DigitalCommons@USU Space Dynamics Lab Publications Space Dynamics Lab 1-1-1997 SPIRIT III Radiometer Saturation Effect Joseph J. Tansock Follow this and additional works at: https://digitalcommons.usu.edu/sdl_pubs

More information

Modeling Turbulent Entrainment of Air at a Free Surface C.W. Hirt 5/24/12 Flow Science, Inc.

Modeling Turbulent Entrainment of Air at a Free Surface C.W. Hirt 5/24/12 Flow Science, Inc. Flow Science Report 01-12 Modeling Turbulent Entrainment of Air at a Free Surface C.W. Hirt 5/24/12 Flow Science, Inc. Overview In free-surface flows the turbulence in the liquid may be sufficient to disturb

More information

LONGITUDINAL AIR VELOCITY CONTROL IN A ROAD TUNNEL DURING A FIRE EVENT

LONGITUDINAL AIR VELOCITY CONTROL IN A ROAD TUNNEL DURING A FIRE EVENT - 27 - LONGITUDINAL AIR VELOCITY CONTROL IN A ROAD TUNNEL DURING A FIRE EVENT R. Borchiellini, V. Ferro, V. Giaretto Energy Department Politecnico di Torino Italy ABSTRACT Ventilation equipment is used

More information

Modeling of Hydraulic Hose Paths

Modeling of Hydraulic Hose Paths Mechanical Engineering Conference Presentations, Papers, and Proceedings Mechanical Engineering 9-2002 Modeling of Hydraulic Hose Paths Kurt A. Chipperfield Iowa State University Judy M. Vance Iowa State

More information

COMPARATIVE STUDY OF KICKING PERFORMANCE BASED ON DIFFERENT KIND OF SHOES

COMPARATIVE STUDY OF KICKING PERFORMANCE BASED ON DIFFERENT KIND OF SHOES National Conference in Mechanical Engineering Research and Postgraduate Students (1 st NCMER 2010) 26-27 MAY 2010, FKM Conference Hall, UMP, Kuantan, Pahang, Malaysia; pp. 375-379 ISBN: 978-967-5080-9501

More information

Heating of indoor residential swimming pools by solar collectors in Denmark

Heating of indoor residential swimming pools by solar collectors in Denmark Heating of indoor residential swimming pools by solar collectors in Denmark Objective The objective of this CITIES demonstration project is to elucidate the potential for utilizing low cost solar collectors

More information

8 GORGEOUS WATERFRONT HOMES BUILT WITH ICF

8 GORGEOUS WATERFRONT HOMES BUILT WITH ICF 8 GORGEOUS WATERFRONT HOMES BUILT WITH ICF 8 Gorgeous Waterfront Homes Built with ICF 1 Waterfront homes are one of the most sought after properties in the country. Unfortunately, homes on the water face

More information

Dynamic Simulation of the Norne Heidrun 10 x 16 Dewatering Pig

Dynamic Simulation of the Norne Heidrun 10 x 16 Dewatering Pig Dynamic Simulation of the Norne Heidrun 10 x 16 Dewatering Pig Aidan O'Donoghue, Pipeline Research Limited, Glasgow, UK ( contact@pipeline-research.com, www.pipeline-research.com ) Introduction The 10

More information

and its weight (in newtons) when located on a planet with an acceleration of gravity equal to 4.0 ft/s 2.

and its weight (in newtons) when located on a planet with an acceleration of gravity equal to 4.0 ft/s 2. 1.26. A certain object weighs 300 N at the earth's surface. Determine the mass of the object (in kilograms) and its weight (in newtons) when located on a planet with an acceleration of gravity equal to

More information

Aerodynamic Analysis of Blended Winglet for Low Speed Aircraft

Aerodynamic Analysis of Blended Winglet for Low Speed Aircraft , July 1-3, 2015, London, U.K. Aerodynamic Analysis of Blended Winglet for Low Speed Aircraft Pooja Pragati, Sudarsan Baskar Abstract This paper provides a practical design of a new concept of massive

More information

Influence of Persons' Movements on Ventilation Effectiveness Brohus, Henrik; Hyldig, Mikkel; Kamper, Simon; Vachek, Ulla Maria

Influence of Persons' Movements on Ventilation Effectiveness Brohus, Henrik; Hyldig, Mikkel; Kamper, Simon; Vachek, Ulla Maria Aalborg Universitet Influence of Persons' Movements on Ventilation Effectiveness rohus, Henrik; Hyldig, Mikkel; Kamper, Simon; Vachek, Ulla Maria Published in: Proceedings of Indoor Air 2008 Publication

More information

WIND LOADS / MOORING & FISH TAILING. Arjen Koop, Senior Project Manager Offshore Rogier Eggers, Project Manager Ships

WIND LOADS / MOORING & FISH TAILING. Arjen Koop, Senior Project Manager Offshore Rogier Eggers, Project Manager Ships WIND LOADS / MOORING & FISH TAILING Arjen Koop, Senior Project Manager Offshore Rogier Eggers, Project Manager Ships OVERVIEW Wind Loads Wind shielding Fish tailing? 2 WIND LOADS FOR OFFSHORE MARS TLP

More information

WIND DATA ANALYSIS AND WIND FLOW SIMULATION OVER LARGE AREAS

WIND DATA ANALYSIS AND WIND FLOW SIMULATION OVER LARGE AREAS Mathematical Modelling in Civil Engineering Vol. 10 No. 1 2014 Doi: 10.2478/mmce 2014 0005 WIND DATA ANALYSIS AND WIND FLOW SIMULATION OVER LARGE AREAS ANGEL TERZIEV- Lecturer, Assoc. Prof., PhD, Technical

More information

Validation of a Neutral Pressure Isolation Room

Validation of a Neutral Pressure Isolation Room Validation of a Neutral Pressure Isolation Room Andrew Fletcher, William Booth and Blanca Beato Arribas BSRIA Ltd., UK Corresponding email: Andrew.Fletcher@bsria.co.uk SUMMARY The principles behind a new

More information

1. Outline of the newly developed control technologies

1. Outline of the newly developed control technologies This paper describes a vertical lifting control and level luffing control design for newly developed, fully hydraulicdriven floating cranes. Unlike lattice boom crawler cranes for land use, the floating

More information

BWS ONLINE FORECASTING BERTH OPERATING SAFETY. Matthew R. O Halloran, Daphne Choong

BWS ONLINE FORECASTING BERTH OPERATING SAFETY. Matthew R. O Halloran, Daphne Choong BWS ONLINE FORECASTING BERTH OPERATING SAFETY Matthew R. O Halloran, Daphne Choong OMC International Pty Ltd, 2/2 Walmer St, Abbotsford, Vic 3067, Australia matthew@omc-international.com.au daphne@omc-international.com.au

More information

CFD ANALYSIS OF WIND PRESSURE OVER SOLAR PANELS AT DIFFERENT ORIENTATIONS OF PLACEMENT

CFD ANALYSIS OF WIND PRESSURE OVER SOLAR PANELS AT DIFFERENT ORIENTATIONS OF PLACEMENT CFD ANALYSIS OF WIND PRESSURE OVER SOLAR PANELS AT DIFFERENT ORIENTATIONS OF PLACEMENT Puneeth kumar H P 1, Dr. S B Prakash 2. 1,2 Department of Thermal Power engineering VTU PG Center, Mysore-29 VTU Belgaum,

More information

The Incremental Evolution of Gaits for Hexapod Robots

The Incremental Evolution of Gaits for Hexapod Robots The Incremental Evolution of Gaits for Hexapod Robots Abstract Gait control programs for hexapod robots are learned by incremental evolution. The first increment is used to learn the activations required

More information

Control Strategies for operation of pitch regulated turbines above cut-out wind speeds

Control Strategies for operation of pitch regulated turbines above cut-out wind speeds Control Strategies for operation of pitch regulated turbines above cut-out wind speeds Helen Markou 1 Denmark and Torben J. Larsen, Risø-DTU, P.O.box 49, DK-4000 Roskilde, Abstract The importance of continuing

More information

ACUTE TEMPERATURE TOLERANCE OF JUVENILE CHINOOK SALMON FROM THE MOKELUMNE RIVER

ACUTE TEMPERATURE TOLERANCE OF JUVENILE CHINOOK SALMON FROM THE MOKELUMNE RIVER ACUTE TEMPERATURE TOLERANCE OF JUVENILE CHINOOK SALMON FROM THE MOKELUMNE RIVER Charles H. Hanson, Ph.D. Hanson Environmental, Inc. SUMMARY A series of static acute tests were performed to determine the

More information

Evolving Gaits for the Lynxmotion Hexapod II Robot

Evolving Gaits for the Lynxmotion Hexapod II Robot Evolving Gaits for the Lynxmotion Hexapod II Robot DAVID TOTH Computer Science, Worcester Polytechnic Institute Worcester, MA 01609-2280, USA toth@cs.wpi.edu, http://www.cs.wpi.edu/~toth and GARY PARKER

More information

ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT

ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT P.Sethunathan 1, M.Niventhran 2, V.Siva 2, R.Sadhan Kumar 2 1 Asst.Professor, Department of Aeronautical Engineering,

More information

External Pressure Coefficients on Saw-tooth and Mono-sloped Roofs

External Pressure Coefficients on Saw-tooth and Mono-sloped Roofs External Pressure Coefficients on Saw-tooth and Mono-sloped Roofs Authors: Bo Cui, Ph.D. Candidate, Clemson University, 109 Lowry Hall, Clemson, SC 9634-0911, boc@clemson.edu David O. Prevatt, Assistant

More information

Analysis and Design of Elevated Intze Watertank and its Comparative Study in Different Wind Zones - using SAP2000

Analysis and Design of Elevated Intze Watertank and its Comparative Study in Different Wind Zones - using SAP2000 IJSTE - International Journal of Science Technology & Engineering Volume 2 Issue 2 August 2015 ISSN (online): 2349-784X Analysis and Design of Elevated Intze Watertank and its Comparative Study in Different

More information

The HumiSys. RH Generator. Operation. Applications. Designed, built, and supported by InstruQuest Inc.

The HumiSys. RH Generator. Operation. Applications. Designed, built, and supported by InstruQuest Inc. The HumiSys RH Generator Designed, built, and supported by InstruQuest Inc. Versatile Relative Humidity Generation and Multi-Sensor System The new HumiSys with single or dual RH probes capabilities is

More information

Computational Fluid Dynamic Air Flow Analysis Report

Computational Fluid Dynamic Air Flow Analysis Report Integrated Intermediate Care Hub (IIHC) Computational Fluid Dynamic Air Flow Analysis Report Prepared for: ZEB-Technology Pte. Ltd 17 Kaki Bukit Place, Singapore 416195 +65 3109 1288 Prepared by: Viet

More information

Available online at Procedia Engineering 200 (2010) (2009) In situ drag measurements of sports balls

Available online at  Procedia Engineering 200 (2010) (2009) In situ drag measurements of sports balls Available online at www.sciencedirect.com Procedia Engineering 200 (2010) (2009) 2437 2442 000 000 Procedia Engineering www.elsevier.com/locate/procedia 8 th Conference of the International Sports Engineering

More information

AIRFLOW MEASUREMENT IN ROAD TUNNELS

AIRFLOW MEASUREMENT IN ROAD TUNNELS - 94 - AIRFLOW MEASUREMENT IN ROAD TUNNELS U. Grässlin, U. Drost, GP. Nodiroli Lombardi Engineering Ltd, Minusio, Switzerland ABSTRACT Reliable and accurate monitoring and control of the longitudinal air

More information

A Research on the Airflow Efficiency Analysis according to the Variation of the Geometry Tolerance of the Sirocco Fan Cut-off for Air Purifier

A Research on the Airflow Efficiency Analysis according to the Variation of the Geometry Tolerance of the Sirocco Fan Cut-off for Air Purifier A Research on the Airflow Efficiency Analysis according to the Variation of the Geometry Tolerance of the Sirocco Fan Cut-off for Air Purifier Jeon-gi Lee*, Choul-jun Choi*, Nam-su Kwak*, Su-sang Park*

More information

POLISH MARITIME RESEARCH 4(80) 2013 Vol 20; pp /pomr

POLISH MARITIME RESEARCH 4(80) 2013 Vol 20; pp /pomr POLISH MARITIME RESEARCH 4(80) 2013 Vol 20; pp. 25-33 10.2478/pomr-2013-0037 The influence of efficiency of the cooling system on the thermodynamic parameters and performance of a two - stage VC 20.96

More information

Keywords: Chilled beam, Thermal plume, Air diffusion, Draught risk

Keywords: Chilled beam, Thermal plume, Air diffusion, Draught risk Topic 6. Ventilation, infiltration and air distribution Impact of Heat Load Location and Strength on Air Flow Pattern with a Passie Chilled Beam System Risto Kosonen 1,*,Pekka Saarinen 2, Alex Hole 3 and

More information

Digiquartz Water-Balanced Pressure Sensors for AUV, ROV, and other Moving Underwater Applications

Digiquartz Water-Balanced Pressure Sensors for AUV, ROV, and other Moving Underwater Applications Digiquartz Water-Balanced Pressure Sensors for AUV, ROV, and other Moving Underwater Applications Dr. Theo Schaad Principal Scientist Paroscientific, Inc. 2002 Paroscientific, Inc. Page 1 of 6 Digiquartz

More information

Validation of Measurements from a ZephIR Lidar

Validation of Measurements from a ZephIR Lidar Validation of Measurements from a ZephIR Lidar Peter Argyle, Simon Watson CREST, Loughborough University, Loughborough, United Kingdom p.argyle@lboro.ac.uk INTRODUCTION Wind farm construction projects

More information

TRIAXYS Acoustic Doppler Current Profiler Comparison Study

TRIAXYS Acoustic Doppler Current Profiler Comparison Study TRIAXYS Acoustic Doppler Current Profiler Comparison Study By Randolph Kashino, Axys Technologies Inc. Tony Ethier, Axys Technologies Inc. Reo Phillips, Axys Technologies Inc. February 2 Figure 1. Nortek

More information

Analysis of stroke technique using acceleration sensor IC in freestyle swimming

Analysis of stroke technique using acceleration sensor IC in freestyle swimming Analysis of stroke technique using acceleration sensor IC in freestyle swimming Y. Ohgi, M. Yasumura Faculty of Environmental Information, Keio Univ., Japan H. Ichikawa Doctoral Prog. of Health and Sport

More information

Biomechanics of Parkour: The Vertical Wall-Run Technique

Biomechanics of Parkour: The Vertical Wall-Run Technique University of Colorado, Boulder CU Scholar Undergraduate Honors Theses Honors Program Spring 2015 Biomechanics of Parkour: The Vertical Wall-Run Technique Integrative Physiology, Peter.Lawson@Colorado.EDU

More information

Flow transients in multiphase pipelines

Flow transients in multiphase pipelines Flow transients in multiphase pipelines David Wiszniewski School of Mechanical Engineering, University of Western Australia Prof. Ole Jørgen Nydal Multiphase Flow Laboratory, Norwegian University of Science

More information

How to specify a product. Process Sensors and Mechanical Instruments

How to specify a product. Process Sensors and Mechanical Instruments How to specify a product Process Sensors and Mechanical Instruments Keep the overview. Here is some guideline information on how to specify our products. Intended as supplementary help to specification

More information