Designing a Pond Loop using. Alan Watts, CGD, IAI AWEB Supply Baton Rouge, LA

Transcription

1 Designing a Pond Loop using Alan Watts, CGD, IAI AWEB Supply Baton Rouge, LA

2 The POWER of WATER ¾ of the Earth Surface is covered by WATER

3 Some See A Pond... We See a Fuel Free, Emission Free, Power Plant created through demand reduction when used in conjunction with geo-exchange heat pumps

4 Ability of Water to Handle Energy Example: 1 acre pond, 10 deep average 208 x 208 = 43,264 ft². 43,264 x 10 = 432,640 cubic feet 432,640 x 7.5 gal. cubic feet = 3,244,800 gal. 3,236,372 x 8.34 = 27,061,632 lbs... 27,061,632 lbs... or Btu s 1 Btu raises 1 lb. water 1 degree in 1 hour

5 Example- Small Pond Midwest A 10 ton (150,000 Btu/hr) heat pump system connected to a pond loop SLIM JIM Geo Lake Plate exchanger. Question: What effect does this system have on the temperature of the pond?

6 Small Pond Midwest Answer: Remember it would require approximately 27,000,000 Btu s to raise the temperature of the pond 1 Deg. F. Now, lets assume the impossible, no wind or evaporation to dissipate heat, no spring to replenish the pond water, and one 10 ton unit is running at full speed for 10 hours in cooling adding 150,000 Btu/hr into the pond. That would be a total of 150,000* 10 = 1,500,000 Btu s.

7 Small Pond Midwest This could change the pond temp F per day. This is insignificant when you consider a steady 5 MPH wind blowing for 3 days can lower the pond temperature by as much as 5 Deg F.

8 Pond Temperature Change Calculator AWEB SUPPLY 7350 Tom Drive, Baton Rouge, LA Phone: Fax: /17/2010 HR Pond/Lake Calculations Project: Example Location: Midwest Heat of Rejection (HR): 150,000 Btu/Hr 10 Tons (HR) 1 Ton (HR): 15,000 Btu/Hr Length: 208 ft Width: 208 ft Surface Area:.99 Acre Surface Area: 43,264 sq. ft. Cu. Ft of Water: 432,640 cu. ft. Gal. of Water: 3,236,372 Gal. Lbs of Water: 26,991,344 Lbs Full Speed Run Time in 24 hours: 10 Hr Temp change per hour:.0056 F Temp change per day:.0556 F Btu's Required to Raise the Water Temp 1 F in 1 day: 2,699,134 Btu/Hr Ton(s) Required to Raise the Water Temp 1 F in 1 day: 180 Tons (HR) Pond Dimensions AVG Depth: 10 ft Temp. F : Water influx: Gal/Day Lbs Influx Water Temp: These basic calculation are done without taking into account for the gains or losses from incoming solar radiation, net advected energy, the energy in evaporation and condensation, the conduction of sensible heat from the water to the atmosphere, or vice versa, etc YELLOW = YELLOW CELL IS USER INPUT Version GREEN = GREEN FIELD IS CALCULATED

9 What is a Slim Jim Geo Lake Plate It is a simple, labor-friendly alternative to polyethylene pipe (lake loops) for fluid to fluid heat transfer in any water cooled refrigeration or heat pump equipment in (ponds/lakes/rivers/oceans). Easy to install (labor friendly) Easy to flush No limit to job size - single to multiple units

10 Family of Slim Jim & Geo Lake Plates

11 Size Does Matter By grouping like Slim Jim Geo Lake Plates in parallel they can accommodate almost any load 200 Ton Preassembled Bank 8 Ton Preassembled Bank 5 Ton Single Plate

12 Just Add Water (3) 8SJ040TCAMT3F3 40 Ton Preassemblies Banks

13 Project Information Sheet

14 HVAC Project 1 Equipment Type Equipment: WaterFurnace Envision TM NXW540 Source Water Temperatures: Summer: 81 F (Warmest at installation depth) Winter: 39 F (Coldest at installation depth)

15 Temperature Pond Depth vs. Temperature Copyright 1997, American Society Of Heating, Air-conditioning and Refrigeration Engineers Inc.,

16 The Summer condition is circled in RED Capacity Data sheet WaterFurnace Envision NXW540

17 Capacity Data sheet WaterFurnace Envision NXW540 The Winter condition is circled in BLUE We need to extrapolate the data to find a EST = 35 F EST = 30 F with a HE of MBTUH EST = 50 F with a HE of MBTUH The EST spread from 30 to 50 is 20 ( ) = = = = EST = 35 F with a HE of MBTUH

18 HVAC Project 1 Project Information Sheet Us the Envision NXW540 data sheets and the pond data to complete the Project Information Sheet

19 HVAC Project 1 Sizing Using the Slim Jim Geo Lake Plate design selection software, the Summer & Winter data is entered. The size and configuration of the Slim Jim Geo Lake Plate required for this project is displayed. Water = W Brine = B Summer Cooling Condition Cooling HR / Calculate Equipment LWT EWT F LWT F HR (kbtu) GPM/T Winter Heating Condition Heating HE / Calculate Equipment LWT EWT F LWT F Pond/Lake Temp (C1) F (Enter the Warmest temperature) Pond/Lake Temp (H1) F (Enter the Coldest temperature) Water = W Brine = B HE (kbtu) GPM/T Equipment EWT (H1) Equipment LWT (H2) 0.0 F Equipment EWT (C1) 0.0 F F Equipment LWT (C2) F T1 T2 0.0 LMTD T1 T2 0.0 LMTD Summer Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface ºF LMTD Winter ºF LMTD kbtu/hr Duty Load 0.0 kbtu/hr Btu/hr. ft2 ºF * 100 is default "U" Value * 80 Btu/hr. ft2 ºF ft² Suggested SLIM JIM Geo Lake Plate surface ft² SLIM JIM Geo Lake Plate Sizes GPM/SJ ft²/sj SJ Plates Suggested SJ Plates Suggested For SJ Plates Suggested SJ Plates Suggested For SLIM JIM Geo Lake Plate Sizes GPM/SJ ft² for Surface Area Application for Surface Area Application SJ-02T 24 in X 72 in ###### 24 SJ-02T 24 in X 72 in ####### 24 SJ-03T 48 in X 60 in ###### 40 SJ-03T 48 in X 60 in ####### 40 SJ-04T 48 in X 72 in ###### 48 SJ-04T 48 in X 72 in ####### 48 SJ-05T 48 in X 96 in ###### 64 SJ-05T 48 in X 96 in ####### 64 SJ-05TC 24 in X 180 in ###### 60 SJ-05TC 24 in X 180 in ####### 60 SJ-08T 48 in X 144 in ###### 96 SJ-08T 48 in X 144 in ####### 96 SJ-10T 48 in X 180 in ###### 120 SJ-10T 48 in X 180 in ####### 120 LEGEND LEGEND #### Version Brine / B = water with a freeze inhibiting solution WARNING POSSIBLE INPUT ERROR EWT = equipment entering water temperature Select Units of Measurement EWT IS BELOW FREEZING - PLEASE CONSULT AWEB SUPPLY FOR SUPPORT US UNITS GPM/SJ = gallon per minute / Slim Jim Plate GPM/T = gallon per minute / System requirement HE = heat extracted in kbtu/hr HR = heat rejected in kbtu/hr LMTD = Logarithmic Mean Temperature Difference LWT = equipment leaving water temperature SJ = Slim Jim User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H1-C2= T1 & H2-C1= T2 Abbreviations and Definitions U = overall coefficient of heat transfer. Btu/hr. ft 2 ºF Water / W = water with no freeze inhibiting solution Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H1-C2= T1 & H2-C1= T2 * 100 is default Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply APPROACH TEMP IS TOO LOW - PLEASE CONSULT AWEB SUPPLY FOR SUPPORT You may use this program to obtain preliminary design selection of a SLIM JIM Geo Lake Plate for your application. Your use of this service is subject to the limitations set forth below. This program is provided as a convenience to our customers solely to assist them in design and selection of SLIM JIM Geo Lake Plate for their applications. We offer this service only as a preliminary design tool for use in selection of the SLIM JIM Geo Lake Plate. It is to be used for no other purpose. The validity and value of the results you achieve depend critically upon the accuracy of the information you provide. AWEB Supply disclaims any liability for the results you obtain using this program, and SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. You are encouraged to contact AWEB Supply at to obtain assistance in making your final selection

20 HVAC Project 1 Using the Slim Jim data is entered. The data from the specification sheet is entered in the Yellow cells Summer Design Geo Lake Plate design selection software, the Summer Water = W Brine = B B Pond/Lake Temp (C 1 ) Equipment EWT (H1) Equipment LWT (H2) Summer Cooling Condition Cooling HR / Calculate Equipment LWT EWT F LWT F HR (kbtu) F (Enter the Warmest temperature) F F GPM/T T 1 T LMTD 13.4 Summer Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface ºF LMTD kbtu/hr Btu/hr. ft2 ºF f t² * 100 is default SLIM JIM Geo Lake Plate Sizes GPM/SJ ft²/sj SJ-02T 24 in X 72 in 6 24 SJ-03T 48 in X 60 in SJ-04T 48 in X 72 in SJ-05T 48 in X 96 in SJ-05TC 24 in X 180 in SJ-08T 48 in X 144 in SJ-10T 48 in X 180 in LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 SJ Plates Suggested for Surface Area SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

21 HVAC Project 1 Winter Design Using the Slim Jim data is entered. The data from the specification sheet is entered in the Yellow cells Geo Lake Plate design selection software, the Winter Water = W Brine = B B Heating HE / Calculate Equipment LWT EWT F LWT F HE (kbtu) 35.0 Pond/Lake Temp (H 1 ) Equipment EWT (C1) Equipment LWT (C2) Winter Heating Condition GPM/TOTAL F (Enter the Coldest temperature) F WARNING FREEZE F INHIBITING SOLUTION REQUIRED T 1 T LMTD 6.2 Winter Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface SLIM JIM Geo Lake Plate Sizes GPM/SJ SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 ft² ºF LMTD kbtu/hr Btu/hr. ft2 ºF ft² SJ Plates Suggested for Surface Area * 100 is default SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

22 HVAC Project 1 Dominate Condition Using the Slim Jim Geo Lake Plate design selection software allows you to design for the dominate condition for the size and configuration for the Slim Jim Geo Lake Plate required for this project. Suggested SLIM JIM Geo Lake Plate surface ft²/sj SLIM JIM Geo Lake Plate Sizes GPM/SJ ft²/sj SJ-02T 24 in X 72 in SJ-03T 48 in X 60 in SJ-04T 48 in X 72 in SJ-05T 48 in X 96 in SJ-05TC 24 in X 180 in SJ-08T 48 in X 144 in SJ-10T 48 in X 180 in LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 SJ Plates Suggested for Surface Area SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply Summer Condition Winter Condition Suggested SLIM JIM Geo Lake Plate surface SLIM JIM Geo Lake Plate Sizes GPM/SJ SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 ft² ft² SJ Plates Suggested for Surface Area SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

23 HVAC Project 1 Selection Option 1 SLIM JIM Geo Lake Plate Sizes SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X Winter Heating Condition SJ Plates Suggested GPM/SJ ft² for Surface Area SJ Plates Suggested For Application SJ060TAM3F3

24 Installation Suggested list of items used for this type of installation: (1) - 3" Back Up Flange kit (To connect 3" Flange to 3" HDPE Pipe) (2) - 3" PE Fusion Elbow 90 Adapter 3" PE Pipe Misc. Nylon wire ties to secure the rebar to the HDPE pipe from the shore to the Slim Jim plate Misc. Rebar cut to short lengths to overcome the buoyancy and allow the liquid filled HDPE pipe to sink to the bottom from the shore to the Slim Jim plate Note: PVC pipe with caped ends can be added to allow the assembly to float at the surface of the water. This will allow the Slim Jim assembly to be placed into position before the system is flushed with fluid. Once the Slim Jim assembly is positioned and flushing of the loop system has started the PVC pipe will allow the Slim Jim assembly to submerge in the upright position and sink to the bottom as the air in the Slim Jim assembly is displaced with the fluid used in the loop system. Once the Slim Jim assembly skid plates have settled on the bottom and all the air is removed from the assembly the PVC pipe can remain in place.

25 4SJ040TAM3F3 Installation Photos Picture Perfect

26 Flushing The fluid flow from the Heat Pump equipment must enter the lowest connection on the Slim Jim assembly. The fluid flow returning to the Heat Pump equipment must exit the highest connection on the Slim Jim assembly. This will insure any remaining air in the system will not be trapped in the Slim Jim assembly. For proper operation and maximum performance, follow the Slim Jim or Geo Lake Plate SUGGESTED INSTRUCTIONS FOR INSTALLATION.

27 Auxiliary Heat Systems on any earth/lake loop in extreme conditions may call for auxiliary heat. When this happens and the return water to the unit is 32 F or less and the unit calls for auxiliary heat, it should be designed to stay engaged until the thermostat(s) are fully satisfied and the system shuts down. This will allow for down time and loop regeneration regardless of loop type In most applications a relay will need to be added to keep the supplemental heat engaged until the thermostat(s) are fully satisfied.

28 HVAC Project 2 Equipment Type Equipment: WaterFurnace Envision TM NS060-ECM Source Water Temperatures: Summer: 81 F (Warmest at installation depth) Winter: 39 F (Coldest at installation depth)

29 The Summer condition is circled in RED Capacity Data sheet WaterFurnace Envision NS060

30 Capacity Data sheet WaterFurnace Envision NS060 The Winter condition is circled in BLUE We need to extrapolate the data to find a EWT = 35 F EWT = 30 F with a HE of 31.8 kbtu/h EWT = 40 F with a HE of 39.2 kbtu/h The EWT spread from 30 to 40 is 10 ( ) = = = = 35.5 EWT = 35 F with a HE of 35.5 kbtu/h

31 HVAC Project 2 Summer Design Using the Slim Jim Geo Lake Plate design selection software, the Summer data is entered. Summer Cooling Condition The data from the specification sheet is entered in the Yellow cells Water = W Brine = B B Pond/Lake Temp (C 1 ) Cooling HR / Calculate Equipment LWT EWT F LWT F HR (kbtu) 90.0 Equipment EWT (H1) Equipment LWT (H2) F (Enter the Warmest temperature) F F 77.7 GPM/T T 1 T LMTD 13.5 Summer Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface ºF LMTD kbtu/hr Btu/hr. ft2 ºF ft²/sj * 100 is default SLIM JIM Geo Lake Plate Sizes GPM/SJ ft²/sj SJ-02T 24 in X 72 in SJ-03T 48 in X 60 in SJ-04T 48 in X 72 in SJ-05T 48 in X 96 in SJ-05TC 24 in X 180 in SJ-08T 48 in X 144 in SJ-10T 48 in X 180 in LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 SJ Plates Suggested for Surface Area SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

32 HVAC Project 2 Winter Design Using the Slim Jim Geo Lake Plate design selection software, the Winter data is entered. Winter Heating Condition The data from the specification sheet is entered in the Yellow cells Water = W Brine = B B Heating HE / Calculate Equipment LWT EWT F LWT F HE (kbtu) 35.0 Pond/Lake Temp (H 1 ) Equipment EWT (C1) Equipment LWT (C2) GPM/TOTAL F (Enter the Coldest temperature) F WARNING FREEZE F INHIBITING SOLUTION REQUIRED T 1 T LMTD 6.1 Winter Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface SLIM JIM Geo Lake Plate Sizes GPM/SJ SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 ft² ºF LMTD kbtu/hr Btu/hr. ft2 ºF ft² SJ Plates Suggested for Surface Area * 100 is default SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

33 HVAC Project 2 Dominate Condition Using the Slim Jim Geo Lake Plate design selection software allows you to design for the dominate condition for the size and configuration for the Slim Jim Geo Lake Plate required for this project. Suggested SLIM JIM Geo Lake Plate surface 57.4 ft²/sj SLIM JIM Geo Lake Plate Sizes GPM/SJ ft²/sj SJ-02T 24 in X 72 in SJ-03T 48 in X 60 in SJ-04T 48 in X 72 in SJ-05T 48 in X 96 in SJ-05TC 24 in X 180 in SJ-08T 48 in X 144 in SJ-10T 48 in X 180 in LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 SJ Plates Suggested for Surface Area SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply Summer Condition Winter Condition Suggested SLIM JIM Geo Lake Plate surface SLIM JIM Geo Lake Plate Sizes GPM/SJ SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X LEGEND User Input: User to input their data in yellow fields 73.2 Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 ft² ft² SJ Plates Suggested for Surface Area 3.05 SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

34 HVAC Project 2 Shallow Water 38 F Winter Design Using the Slim Jim Geo Lake Plate design selection software, the Winter data is entered. Winter Heating Condition The data from the specification sheet is entered in the Yellow cells Water = W Brine = B B Heating HE / Calculate Equipment LWT EWT F LWT F HE (kbtu) 35.0 Pond/Lake Temp (H 1 ) Equipment EWT (C1) Equipment LWT (C2) GPM/TOTAL F (Enter the Coldest temperature) F WARNING FREEZE F INHIBITING SOLUTION REQUIRED T 1 T LMTD 5.0 Winter Duty Load "U" Value * Suggested SLIM JIM Geo Lake Plate surface SLIM JIM Geo Lake Plate Sizes GPM/SJ SJ-02T 24 X SJ-03T 48 X SJ-04T 48 X SJ-05T 48 X SJ-05TC 24 X SJ-08T 48 X SJ-10T 48 X LEGEND User Input: User to input their data in yellow fields Calculated Values: These are formula and cannot be changed by user Information Only: H 1 -C 2 = T 1 & H 2 -C 1 = T 2 ft² ºF LMTD kbtu/hr Btu/hr. ft2 ºF ft² SJ Plates Suggested for Surface Area * 100 is default SJ Plates Suggested For Application Flow Is BELOW Specs: Consult AWEB Supply Flow Is ABOVE Specs: Consult AWEB Supply

35 The Power of WATER Our Future

36 Thank You