Designing a Pond Loop using Thermal Plates€¦ · Designing a Pond Loop using Alan Watts, CGD, IAI AWEB Supply Baton Rouge, LA

Designing a Pond Loop using

Alan Watts, CGD, IAI

AWEB Supply

Baton Rouge, LA

The POWER of WATER

¾ of the Earth Surface is

covered by

WATER

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

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

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?

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.

Small Pond

Midwest

This could change the pond temp 0.056 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.

Pond Temperature

Change Calculator

AWEB SUPPLY7350 Tom Drive, Baton Rouge, LA 70806

Phone: 225-928-2630

Fax: 225-928-2087

eMail: [email protected]

www.awebgeo.com

Project: Location:

Heat of Rejection (HR):

Length: AVG Depth:

Width: Temp. F°:

Surface Area: Water influx:

Surface Area: Influx Water Temp:

Cu. Ft of Water:

Gal. of Water:

Lbs of Water:

Full Speed Run Time in 24 hours: 10 Hr

Temp change per hour:

Temp change per day:

Btu's Required to Raise the Water Temp 1°F in 1 day:

Ton(s) Required to Raise the Water Temp 1°F in 1 day:

YELLOW Version

GREEN = GREEN FIELD IS CALCULATED 20100917

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…

26,991,344 Lbs

2,699,134 Btu/Hr

10 ft

Gal/Day Lbs

= YELLOW CELL IS USER INPUT

9/17/2010

3,236,372 Gal.

HR Pond/Lake Calculations

Example

43,264 sq. ft.

432,640 cu. ft.

.0056˚F

.0556˚F

180 Tons (HR)

208 ft

208 ft

Midwest

150,000 Btu/Hr

.99 Acre

1 Ton (HR): 15,000 Btu/Hr

10 Tons (HR)

Pond Dimensions

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

Family of Slim Jim® &

Geo Lake Plates®

Size Does Matter

200 Ton Preassembled Bank 8 Ton Preassembled Bank

• By grouping like Slim Jim® Geo Lake Plates® in

parallel they can accommodate almost any load

5 Ton Single Plate

Just Add Water

(3) 8SJ040TCAMT3F3 40 Ton Preassemblies Banks

Project Information Sheet

HVAC Project 1

Equipment Type

Equipment: WaterFurnace® EnvisionTM NXW540

Source Water Temperatures:

Summer: 81 F (Warmest at installation depth)

Winter: 39 F (Coldest at installation depth)

Temperature

Pond Depth vs. Temperature

Copyright 1997, American Society Of Heating, Air-conditioning and Refrigeration Engineers

Inc., www.ashrae.org.

The Summer

condition is circled

in RED

Capacity Data sheet WaterFurnace®

Envision™ NXW540

The Winter


in BLUE


Envision™ NXW540

We need to extrapolate the

data to find a EST = 35 F

EST = 30 F with a HE of

314.7 MBTUH

EST = 50 F with a HE of

420.3 MBTUH

The EST spread from

30 to 50 is 20

(420.3 - 314.7) = 105.6

105.6 20 = 5.28

5 5.28 = 26.4

314.7 + 26.4 = 341.1

EST = 35 F with a

HE of 341.1 MBTUH

HVAC Project 1

Project Information Sheet

Us the Envision™ NXW540 data sheets and the pond data to complete the Project Information Sheet

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.

500 100.00604 0 29.997 0

°F (Enter the Warmest temperature) °F (Enter the Coldest temperature)

°F °F #VALUE!

°F °F #VALUE!

T1 T1

T2 T2

ºF LMTD ºF LMTD

kBtu/hr kBtu/hr

Btu/hr. ft2 ºF Btu/hr. ft2 ºF

ft² ft²

GPM/SJ ft²/SJ GPM/SJ ft²

SJ-02T 24 in X 72 in ###### 24 SJ-02T 24 in X 72 in ####### 24




SJ-05TC 24 in X 180 in ###### 60 SJ-05TC 24 in X 180 in ####### 60



#### Version

Brine / B = water with a freeze inhibiting solution 20090908

EWT = equipment entering water temperature Select Units of Measurement 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

U = overall coefficient of heat transfer. Btu/hr. ft2 ºF

Water / W = water with no freeze inhibiting solution

* 100 is default

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 Flow Is ABOVE Specs: Consult AWEB Supply

SJ Plates Suggested For

Application

#VALUE!

#VALUE!

#VALUE!

#VALUE!

#VALUE!

#VALUE!

SJ Plates Suggested

for Surface Area

#VALUE!

#VALUE!

#VALUE!

#VALUE!

#VALUE!

#VALUE!

0.0

Pond/Lake Temp (H1)

Summer Cooling Condition

#VALUE!

LMTD #VALUE!

0.0

Equipment LWT (H2)

Equipment EWT (H1)

Pond/Lake Temp (C1)

Water = W

Brine = B

Cooling HR / Calculate Equipment LWT

0.0

EWT °F GPM/T

#VALUE!

LWT °F HR (kBtu)

#VALUE!

Winter Heating Condition

Winter

Equipment LWT (C2)

Equipment EWT (C1)

LWT °F

#VALUE!

EWT °F

0.0

#VALUE!

GPM/T

#VALUE!

#VALUE!

Heating HE / Calculate Equipment LWT

Water = W

Brine = B

0.0

HE (kBtu)

LMTD

#VALUE!

* 100 is default

SJ Plates Suggested

for Surface Area

#VALUE!

#VALUE!

#VALUE!

Flow Is BELOW Specs: Consult AWEB Supply

"U" Value *

Suggested SLIM JIM® Geo Lake Plate® surface #VALUE!


Application

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.

Abbreviations and Definitions


#VALUE!

Flow Is ABOVE Specs: Consult AWEB Supply


Information Only: H1-C2=∆T1 & H2-C1=∆T2

#VALUE!

#VALUE!


#VALUE!

#VALUE!

#VALUE!

Summer

#VALUE!

#VALUE!

Duty Load

Suggested SLIM JIM® Geo Lake Plate® surface

"U" Value *

#VALUE! #VALUE! #VALUE!

100

Duty Load

80

0.0

SLIM JIM® Geo Lake Plate® Sizes SLIM JIM® Geo Lake Plate® Sizes

#VALUE!

#VALUE!

#VALUE!

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 888.277.2932 to obtain assistance in making your final selection

LEGENDLEGEND

EWT IS BELOW FREEZING - PLEASE CONSULT AWEB SUPPLY FOR SUPPORT

APPROACH TEMP IS TOO LOW - PLEASE CONSULT AWEB SUPPLY FOR SUPPORT

WARNING POSSIBLE INPUT ERROR

#VALUE!

HVAC Project 1

Summer Design

Using the Slim Jim® Geo Lake Plate® design selection software, the Summer

data is entered.

°F (Enter the Warmest temperature)

°F

°F

T1

T2

ºF LMTD

kBtu/hr

Btu/hr. ft2 ºF

f t²

GPM/SJ ft²/SJ

SJ-02T 24 in X 72 in 6 24

SJ-03T 48 in X 60 in 10 40

SJ-04T 48 in X 72 in 12 48

SJ-05T 48 in X 96 in 17 64

SJ-05TC 24 in X 180 in 23 60

SJ-08T 48 in X 144 in 23 96

SJ-10T 48 in X 180 in 27 120

* 100 is default





Application

5.00

22.00

13.00

8.00

509.2

SJ Plates Suggested

for Surface Area

13.4

684.3


19.1

LMTD 13.4

9.0

Equipment LWT (H2)

Equipment EWT (H1)

Pond/Lake Temp (C1)

Water = W

Brine = B

B


90.0

90.0

EWT °F

135.00

GPM/T

684.3100.1

LWT °F HR (kBtu)

81.0

100.1


21.22

7.96

5.30

Summer

10.61

4.24

Duty Load


"U" Value *

9.00

100

SLIM JIM® Geo Lake Plate® Sizes

11.00

6.00

12.73

LEGEND

8.49

The data from the

specification sheet is

entered in the Yellow

cells

HVAC Project 1

Winter Design

Using the Slim Jim® Geo Lake Plate® design selection software, the Winter

data is entered.

The data from the



cells

29.994

°F (Enter the Coldest temperature)

°F WARNING FREEZE

°F INHIBITING SOLUTION REQUIRED

T1

T2

ºF LMTD

kBtu/hr

Btu/hr. ft2 ºF

ft²

GPM/SJ ft²

SJ-02T 24 X 72 4.7 24

SJ-03T 48 X 60 7.5 40

SJ-04T 48 X 72 9.0 48

SJ-05T 48 X 96 12.3 64

SJ-05TC 24 X 180 11.3 60

SJ-08T 48 X 144 16.9 96

SJ-10T 48 X 180 22.5 120


Duty Load

80

341.1

LEGEND

6.00

29.00




15.00

11.49 12.00

28.72

Pond/Lake Temp (H1)

* 100 is default

SJ Plates Suggested

for Surface Area

11.00

18.00

8.00


Application

7.18

17.23

14.36

10.77

B

LMTD

9.1

35.0


"U" Value *


4.0

6.2

GPM/TOTAL

29.9

6.2


Water = W

Brine = B

35.0

341.1

HE (kBtu)


Winter

Equipment LWT (C2)

Equipment EWT (C1)

LWT °F

29.9

EWT °F

39.0

135.00


689.2

5.74

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.

Summer Condition

Winter Condition

ft²/SJ

GPM/SJ ft²/SJ

SJ-02T 24 in X 72 in 6.1 24

SJ-03T 48 in X 60 in 10.4 40

SJ-04T 48 in X 72 in 12.3 48

SJ-05T 48 in X 96 in 16.9 64

SJ-05TC 24 in X 180 in 22.5 60

SJ-08T 48 in X 144 in 22.5 96

SJ-10T 48 in X 180 in 27.0 120


Application

5.00

22.00

13.00

8.00

509.2

SJ Plates Suggested

for Surface Area





21.22

7.96

5.30

10.61

4.24


9.00


11.00

6.00

12.73

LEGEND

8.49

ft²

GPM/SJ ft²

SJ-02T 24 X 72 4.7 24

SJ-03T 48 X 60 7.5 40

SJ-04T 48 X 72 9.0 48

SJ-05T 48 X 96 12.3 64

SJ-05TC 24 X 180 11.3 60

SJ-08T 48 X 144 16.9 96

SJ-10T 48 X 180 22.5 120


LEGEND

6.00

29.00




15.00

11.49 12.00

28.72

SJ Plates Suggested

for Surface Area

11.00

18.00

8.00


Application

7.18

17.23

14.36

10.77




689.2

5.74

GPM/SJ ft²

SJ-02T 24 X 72 4.7 24

SJ-03T 48 X 60 7.5 40

SJ-04T 48 X 72 9.0 48

SJ-05T 48 X 96 12.3 64

SJ-05TC 24 X 180 11.3 60

SJ-08T 48 X 144 16.9 96

SJ-10T 48 X 180 22.5 120


6.00

29.00

15.00

11.49 12.00

28.72

SJ Plates Suggested

for Surface Area

11.00

18.00

8.00


Application

7.18

17.23

14.36

10.77

5.74

HVAC Project 1

Selection Option 1

6SJ060TAM3F3


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.

4SJ040TAM3F3

Installation Photos

Picture Perfect

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.

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.

HVAC Project 2

Equipment Type

Equipment: WaterFurnace® EnvisionTM NS060-ECM

Source Water Temperatures:

Summer: 81 F (Warmest at installation depth)

Winter: 39 F (Coldest at installation depth)

The Summer


in RED


Envision™ NS060

The Winter


in BLUE


Envision™ NS060

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

(39.2 – 31.8) = 7.4

7.4 10 = 0.74

5 0.74 = 3.7

31.8 + 3.7 = 35.5

EWT = 35 F with a

HE of 35.5 kBtu/h

HVAC Project 2

Summer Design

Using the Slim Jim® Geo Lake Plate® design selection software, the Summer

data is entered.

The data from the



cells

500 100.36 0

°F (Enter the Warmest temperature)

°F

°F

T1

T2

ºF LMTD

kBtu/hr

Btu/hr. ft2 ºF

ft²/SJ

GPM/SJ ft²/SJ

SJ-02T 24 in X 72 in 5.0 24

SJ-03T 48 in X 60 in 7.5 40

SJ-04T 48 in X 72 in 7.5 48

SJ-05T 48 in X 96 in 15.0 64

SJ-05TC 24 in X 180 in 15.0 60

SJ-08T 48 in X 144 in 15.0 96

SJ-10T 48 in X 180 in 15.0 120


2.00

1.00

1.44

LEGEND

0.96

Summer

1.20

0.48

Duty Load


"U" Value *

1.00

100


2.39

0.90

0.60

* 100 is default





19.4

LMTD 13.5

9.0

Equipment LWT (H2)

Equipment EWT (H1)

Pond/Lake Temp (C1)

Water = W

Brine = B

B


90.0

90.0

EWT °F

15.00


Application

1.00

3.00

2.00

1.00

57.4

SJ Plates Suggested

for Surface Area

13.5

77.7

GPM/T

77.7100.4

LWT °F HR (kBtu)

81.0

100.4

HVAC Project 2

Winter Design


data is entered.

The data from the



cells

29.994


°F WARNING FREEZE


T1

T2

ºF LMTD

kBtu/hr

Btu/hr. ft2 ºF

ft²

GPM/SJ ft²

SJ-02T 24 X 72 3.8 24

SJ-03T 48 X 60 7.5 40

SJ-04T 48 X 72 7.5 48

SJ-05T 48 X 96 7.5 64

SJ-05TC 24 X 180 7.5 60

SJ-08T 48 X 144 15.0 96

SJ-10T 48 X 180 15.0 120


Duty Load

80

35.5

LEGEND

1.00

4.00




2.00

1.22 2.00

3.05

Pond/Lake Temp (H1)

* 100 is default

SJ Plates Suggested

for Surface Area

2.00

2.00

1.00


Application

0.76

1.83

1.53

1.14

B

LMTD

8.7

35.0


"U" Value *


4.0

6.1

GPM/TOTAL

30.3

6.1


Water = W

Brine = B

35.0

35.5

HE (kBtu)


Winter

Equipment LWT (C2)

Equipment EWT (C1)

LWT °F

30.3

EWT °F

39.0

15.00


73.2

0.61

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.

Summer Condition

Winter Condition

ft²/SJ

GPM/SJ ft²/SJ

SJ-02T 24 in X 72 in 5.0 24

SJ-03T 48 in X 60 in 7.5 40

SJ-04T 48 in X 72 in 7.5 48

SJ-05T 48 in X 96 in 15.0 64

SJ-05TC 24 in X 180 in 15.0 60

SJ-08T 48 in X 144 in 15.0 96

SJ-10T 48 in X 180 in 15.0 120


2.00

1.00

1.44

LEGEND

0.96

1.20

0.48


1.00


2.39

0.90

0.60





Application

1.00

3.00

2.00

1.00

57.4

SJ Plates Suggested

for Surface Area

ft²

GPM/SJ ft²

SJ-02T 24 X 72 3.8 24

SJ-03T 48 X 60 7.5 40

SJ-04T 48 X 72 7.5 48

SJ-05T 48 X 96 7.5 64

SJ-05TC 24 X 180 7.5 60

SJ-08T 48 X 144 15.0 96

SJ-10T 48 X 180 15.0 120


LEGEND

1.00

4.00




2.00

1.22 2.00

3.05

SJ Plates Suggested

for Surface Area

2.00

2.00

1.00


Application

0.76

1.83

1.53

1.14




73.2

0.61

HVAC Project 2

Shallow Water – 38 F Winter Design


data is entered.

The data from the



cells

29.994


°F WARNING FREEZE


T1

T2

ºF LMTD

kBtu/hr

Btu/hr. ft2 ºF

ft²

GPM/SJ ft²

SJ-02T 24 X 72 3.0 24

SJ-03T 48 X 60 5.0 40

SJ-04T 48 X 72 5.0 48

SJ-05T 48 X 96 7.5 64

SJ-05TC 24 X 180 7.5 60

SJ-08T 48 X 144 7.5 96

SJ-10T 48 X 180 15.0 120


Duty Load

70

35.5

LEGEND

1.00

5.00




3.00

1.69 2.00

4.23

Pond/Lake Temp (H1)

* 100 is default

SJ Plates Suggested

for Surface Area

2.00

3.00

2.00


Application

1.06

2.54

2.11

1.59

B

LMTD

7.7

35.0


"U" Value *


3.0

5.0

GPM/TOTAL

30.3

5.0


Water = W

Brine = B

35.0

35.5

HE (kBtu)


Winter

Equipment LWT (C2)

Equipment EWT (C1)

LWT °F

30.3

EWT °F

38.0

15.00


101.5

0.85

The Power of WATER

Our Future

Thank You

Designing a Pond Loop using Thermal Plates€¦ · Designing a Pond Loop using Alan Watts, CGD, IAI AWEB Supply Baton Rouge, LA

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