................................................................................... 1 ..................................................................................... 2 ................................................................................... 5 ........................................................................ 6 ..................................................................... 7 : () ........................................ 9 . .

( 3 .. 52) 1 31

(Heat Pipe Dehumidification)

1. (Working Fluid) (Refrigerant) 22 134a (Passive) (Evaporation Section) (Condensation Section) 1.1

A traditional heat pipe is a hollow cylinder filled with a vaporizable liquid.

AA

A. Heat is absorbed in the evaporatingsection.

BB

B. Fluid boils to vapor phase.

CC

C. Heat is released from the upper partof cylinder to the environment;vapor condenses to liquid phase.

DD

D. Liquid returns by gravity to thelower part of cylinder (evaporatingsection).

A traditional heat pipe is a hollow cylinder filled with a vaporizable liquid.

AA

A. Heat is absorbed in the evaporatingsection.

AA

A. Heat is absorbed in the evaporatingsection.

BB

B. Fluid boils to vapor phase.

BB

B. Fluid boils to vapor phase.

CC

C. Heat is released from the upper partof cylinder to the environment;vapor condenses to liquid phase.

CC

C. Heat is released from the upper partof cylinder to the environment;vapor condenses to liquid phase.

DD

D. Liquid returns by gravity to thelower part of cylinder (evaporatingsection).

DD

D. Liquid returns by gravity to thelower part of cylinder (evaporatingsection).

1.1:

(Cooling Coil) 2 (Precool Heat Pipe Section) (Overcooled Air)

( 3 .. 52) 2 31

(Reheat Heat Pipe Section)

Increased Condensate

Precool Reheat

1.2: (1)

2. (Sensible Heat) (Dew Point) (Latent Heat) (Overcooled Air) (Reheating Coil) (Comfortable Air) 2.1

( 3 .. 52) 3 31

50F/95%RH

OversizedOversizedCooling CoilCooling Coil

OverOver--Cooled AirCooled Air

MoistureMoistureRemovedRemoved

80F

ReheatingReheatingCoilCoil

ComfortableComfortableAirAir

60F/65%RH

Hot &Hot &Very Humid AirVery Humid Air

2.1:

Psychrometric 2.2

MOISTUREREMOVED

BY COOLINGSYSTEM WITH

ELECTRIC HEATER

COOLING COIL h

LA SA

EAREHEAT h

CONVENTIONAL COOLING WITH REHEATINGCONVENTIONAL COOLING WITH REHEATING

Dry Bulb Temperature (F)40 50 60 70 80 90 100 110 120

40

50

60

70

80

Relative

Humidity

(%)

10%

20%

30%

40%5

0%60%7

0%80%9

0%

2.2: Psychrometric

(Cooling Coil EA LA) (Reheat LA SA)

EA LA SA

( 3 .. 52) 4 31

(Precool) (Reheat) 2.3

OverOver--Cooled AirCooled Air

MoistureMoistureRemovedRemovedStandardStandard

Cooling CoilCooling Coil

80F 70F

50F/95%RH60F/65%RH

Hot &Hot &Very Humid AirVery Humid Air

2.3: (Overcool) (Reheat) Psychrometric 2.4

EA

LA

SA

Precool

Reheat

( 3 .. 52) 5 31

MOISTUREREMOVED

BY COOLINGSYSTEM WITHHEAT PIPES

COOLING COIL h

LA SA

EA

PRECOOL HEAT PIPE h

PRECOOL HEAT PIPE h

REHEAT HEAT PIPE h

COOLING WITH HEAT PIPESCOOLING WITH HEAT PIPES

Dry Bulb Temperature (F)40 50 60 70 80 90 100 110 120

40

50

60

70

80

Relative

Humidity

(%)

10%

20%

30%

40%5

0%60%7

0%80%9

0%

2.4: Psychrometric

Precool Reheat 3. 30%-50% (Overcool) (Reheat) 22 oC 50% RH 3.5 kW

( 3 .. 52) 6 31

22 oC / 50% RH

22 oC / 50% RH

Cooling Coil 5.5

Electric Heater 3.5 kW

Heat Pipe

Cooling Coil 4.6

22 oC / 50% RH

22 oC / 50% RH

Cooling Coil 5.5

Electric Heater 3.5 kW

Heat Pipe

Cooling Coil 4.6

Heater Heat Pipe (oFDB/oFWB) - 80.2 / 69.6

PRECOOL (oFDB/oFWB) - 70.5 / 66.6 (Btu/h) - 11,807 (0.98 Ton) (kW) - - (oFDB/oFWB) 80.2 / 69.6 70.5 / 66.6

COOLING COIL (oFDB/oFWB) 51 / 50 51 / 50 (Btu/h) 66,511 (5.5 Ton) 54,704 (4.6 Ton) (kW) 6.6 5.5 (oFDB/oFWB) 51 / 50 51 / 50

REHEAT (oFDB/oFWB) 60.8 / 54.1 60.8 / 54.1 (Btu/h) 11,807 (0.98 Ton) 11,807 (0.98 Ton) (kW) 3.5 - (kW) 10.1 5.5 (kW) - 4.6 (46%)

4.6 kW 46% 4. 40%-60%RH (Fresh Air Unit) (Air Handling Unit)

( 3 .. 52) 7 31

Cooling Load Precool

4.1:

5. (Control Room) (Communication Room)

( 3 .. 52) 8 31

6. 15,000 20 ( 2551) 7. 1 8. R-134a R-22

( 3 .. 52) 9 31

: () : : :

: 22 +- 1 45 +- 3 (% RH) : 6 : : 6,203,692.48 : 1,978,007.96 : 3,642,464 : 1.84

( 3 .. 52) 10 31

: () 1) () () (Heat Pipe Dehumidification) Solid Desiccant

2)

2.1) () 22 +- 1 , 45 +- 3 2 Solid desiccant () 1. (FAU C001) Desiccant 457,838 Btu/h 4,353 CFM 2. solid desiccant/steam coil (DH-C001) 848,565 Btu/h 7,647 CFM () 579,195 kJ/h

11 31

(3..52) 12 31

/

1 FAU-C001

2 Solid Desiccant/Steam Coil : DH C001

(3..52) 13 31

2.2 (Baseline Energy Index) Solid Desiccant 1 () 1

kWh MJ/h MJ/h MJ/h 1. FAU-COO1 DH-COO1 FAU-COO1 43.16 345.28 - 345.28 DH-COO1 45.02 360.16 363.90 724.05 (1) 88.18 705.44 363.90 1,069.33 2. AHU-COO1 COO4 AHU-COO1 44.52 356.16 - 356.16 AHU-COO2 44.36 354.88 - 354.88 AHU-COO3 47.26 378.08 - 378.08 AHU-COO4 46.27 370.16 - 370.16 (2) 182.41 1,459.28 - 1,459.28 3. DH-COO2 N/A DH-COO2 2.6 20.8 58.799 79.599 DH-COO3 2.6 20.8 44.941 65.741 DH-N/A 2.6 20.8 31.741 52.541 (3) 7.8 62.4 135.481 197.881 (1) + (2) + (3) 270 2,227.12 499.38 2,726.50

= = 2,726.50

= 2,726.50

(3..52) 14 31

(Baseline Energy Consumption) () = (DH-C001,C002,C003) = 3,344,561.28 MJ/yr

= 3,170.20 MMBtu/ = 3,170.20 x 299.20 = 948,523.92 / = FAU-C001 +

DH-C001 + DH-C002, COO3, N/A + AHU-COO1 COO4

= 308,680 + 321,983 + 118,842 + 1,304,596

= 2,054,102 kWh/yr = FAU-C001 + DH-

C001 + DH-C002, COO3, N/A + AHU-COO1 COO4

= 855,044.48 + 891,893.02 + 329,193.45 + 3,613,731.81

= 5,689,862.76 2

(MMBtu/)

(-/)

(/)

3,170.20 -

- 2,054,102

3,344,561.28 7,394,767.49

3,170.20 2,054,102 -

(3..52) 15 31

() 0.45 = 7,394,767.49 / = 7,394,767.49 / 0.45 / = 16,432,816.64 / = 3,344,561.28 / = 16,432,816.64 + 3,344,561.28 = 19,777,377.92 / 3

(/)

(/)

(/)

948,523.92 -

- 5,689,862.76

948,523.92 5,689,862.76

948,523.92 5,689,862.76 6,638,386.68

(3..52) 16 31

2.3 /

2 (FAU-C001) solid desiccant (DH-C001) Solid desiccant

1. 1 (FAU -01 w/HP) 416,000 Btu/h 4,353 CFM R-134a ( 0.81 kW/ton) 28.08 kW 2. 2 (FAU - 02 w/HP) 731,000 Btu/h 7,647 CFM R-134a ( 0.81 kW/ton) 49.34 kW

2 2 4 (AHU C001,2,3 4) 3 (DH-C002,3 N/A)

(3..52) 17 31

2

Process Room (Candy)22+ 1 oC ,45+ 3%RH

CHWS

SA SA SASASA RA

CHWS

AHU - C004

AHU - C001

CHWS

AHU - C002

CHWS

AHU - C003

CHWS

Electric Heater

DH N/A

DH COO2

Heater + Steam

Heater + Steam

DH COO3

After Installation Heat Pipe

SpecificationFAU - COO1-HP731,000 Btu/h 7,647 CFM49.34 kWR-134 a

Heat Pipe

SpecificationFAU - COO2- HP416,000 Btu/h4,535 CFM28.08 kWR-134 a

CHWS Heat Pipe

() 2551 2551 6

3 1

(3..52) 18 31

4 2

5

(3..52) 19 31

2.4 (Post Energy Index)

22 +- 1 , 45 +- 3 2 (AHU-C001 C004) (DH-C002, 003, N/A) 4

kWh MJ/hr MJ/hr MJ/hr

FAU-COO1 HP FAU-COO2 HP FAU-COO1 HP 26.06 208.48 - 208.48 FAU-COO2 HP 16.06 128.48 - 128.48 (1) 42.12 336.96 - 336.96 AHU-COO1 COO4 AHU-COO1 30.04 240.32 - 240.32 AHU-COO2 40.76 326.08 - 326.08 AHU-COO3 43.04 344.32 - 344.32 AHU-COO4 52.60 420.80 - 420.80 (2) 166.44 1,331.52 - 1,331.52 DH-COO2, COO3, N/A DH-COO2 4.54 36.32 48.25 84.57 DH-COO3 4.42 35.36 39.93 75.29 DH-N/A 1.61 12.88 25.50 38.38 (3) 10.57 84.56 113.68 198.24 219.13 1,753.04 113.68 1,866.73

= 1,866.73

(3..52) 20 31

5

- () - Humidity Ratio

23.8 oC / 54%RH

9.97 g/kg(a)

22 oC / 40.6%RH

6.69 g/kg(a) - () - Humidity Ratio

32.5oC / 50.5%RH

15.60 g/kg(a)

27.9oC / 42.8%RH

10.08 g/kg(a) (kW/ton) 0.85 0.85 2.5 (Post Energy Consumption)

(Post Energy Consumption) = DH-COO2,O3 = 630,663.36

= 597.79 MMBtu/ = FAU-C001-HP +

FAU-C002-HP + DH-C002, COO3, N/A + AHU-COO1 COO4 = 186,381 + 114,861 + 126,257 + 1,190,379

= 1,617,878 = FAU-C001-HP +

FAU-C002-HP + DH-C002, COO3, N/A + AHU-COO1 COO4 = 516,275.70 + 318,165.30 + 349,730.89 + 3,297,349.50

= 4,481,521.40

(3..52) 21 31

6 7 6 :

(MMBtu/)

(/)

(/)

1. FAU-C001-HP 2. FAU-C002-HP 3. DH-C002, COO3, N/A 4. AHU-COO1 COO4 5. DH-COO2 COO3

- - - -

597.79

186,381

114,861

126,257

1,190,379 -

670,972.03

413,500.03

454,523.90

4,285,363.97

630,663.36

597.79 1,617,878 - 7 :

(/)

(/)

(/)

1. FAU-C001-HP 2. FAU-C002-HP 3. DH-C002, COO3, N/A 4. AHU-COO1 COO4 5. DH-COO2 COO3

- - - -

178,857.32

516,275.70 318,165.30

349,730.89

3,297,349.50

-

516,275.70 318,165.30

349,730.89

3,297,349.50

178,857.32

178,857.32 4,481,521.40 4,660,378.72

(3..52) 22 31

8 :

NG (/)

(MMBtu/) (/)

(kWh/)

(/) (/)

3,170.20 597.79

948,523.92 178,857.32

2,054,102 1,617,878

19,777,377.92 13,573,685.44

6,638,386.68 4,660,378.72

2,726.50 1,866.73

2,572.41 769,666.60 436,224 6,203,692.48 1,978,007.96 859.77 = 2,726.50 / = 1,866.73 /

= ( ) * 100 = (2,726.50 1,866.73) x 100 2,726.50 = 31.53%

3,642,464 1,978,007.96 / 1.84

(3..52) 23 31

Solid Desiccant 1 () .1

kWh MJ/h MJ/h MJ/h 1. FAU-COO1 DH-COO1 FAU-COO1 43.16 345.28 - 345.28 DH-COO1 45.02 360.16 363.90 724.05 (1) 88.18 705.44 363.90 1,069.33 2. AHU-COO1 COO4 AHU-COO1 44.52 356.16 - 356.16 AHU-COO2 44.36 354.88 - 354.88 AHU-COO3 47.26 378.08 - 378.08 AHU-COO4 46.27 370.16 - 370.16 (2) 182.41 1,459.28 - 1,459.28 3. DH-COO2 N/A DH-COO2 2.6 20.8 58.799 79.599 DH-COO3 2.6 20.8 44.941 65.741 DH-N/A 2.6 20.8 31.741 52.541 (3) 7.8 62.4 135.481 197.881 (1) + (2) + (3) 270 2,227.12 499.38 2,726.50

= = 2,726.50

= 2,726.50

(3..52) 24 31

(Baseline Energy Consumption) () () - 24

- 298 - 2.77

DH-COO1 = 363.90 DH-COO2 = 58.799 DH-COO3 = 44.941 467.64 = 467.64 x 24 x 298 = 3,344,561.28 NG 1,055 /MMBtu = 3,344,561.28 / 1,055 = 3,170.20 MMBtu/ 299.20 MMBtu = 3,170.20 x 299.20 = 948,523.92 / FAU-C001 = 3.64 () = 39.52 = (3.64 + 39.52) x 24 x 298 = 308,680 = 308,680 x 2.77

(3..52) 25 31

= 855,044.48 DH-C001 = 8.39 () = 36.63 = (8.39 + 36.63) x 24 x 298 = 321,983 = 321,983 x 2.77 = 891,893.02 /

DH-C002, COO3, N/A DH-COO2 = 2.6 DH-COO3 = 2.6 DH-N/A = 2.6 Heater DH-N/A = 31.74 / 3.6 = 8.82 = 16.62 = 16.62 x 24 x 298 = 118,842 = 118,842 x 2.77 = 329,193.45 / AHU-COO1 COO4 AHU-COO1 = 44.52 AHU-COO2 = 44.36 AHU-COO3 = 47.26 AHU-COO4 = 46.27 = 182.41 = 182.41 x 24 x 298 = 1,304,596 = 1,304,596 x 2.77 = 3,613,731.81 /

(3..52) 26 31

= (DH-C001,C002,C003) = 3,344,561.28 MJ/yr

= 3,170.20 MMBtu/ = 3,170.20 x 299.20 = 948,523.92 / = FAU-C001 +

DH-C001 + DH-C002, COO3, N/A + AHU-COO1 COO4

= 308,680 + 321,983 + 118,842 + 1,304,596

= 2,054,102 kWh/yr = FAU-C001 + DH-

C001 + DH-C002, COO3, N/A + AHU-COO1 COO4

= 855,044.48 + 891,893.02 + 329,193.45 + 3,613,731.81

= 5,689,862.76 () 0.45 = 7,394,767.49 / = 7,394,767.49 / 0.45 / = 16,432,816.64 / = 3,344,561.28 / = 16,432,816.64 + 3,344,561.28 = 19,777,377.92 /

(3..52) 27 31

22 +- 1 , 45 +- 3 2 (AHU-C001 C004) (DH-C002, 003, N/A) .1

kWh MJ/hr MJ/hr MJ/hr

FAU-COO1 HP FAU-COO2 HP FAU-COO1 HP 26.06 208.48 - 208.48 FAU-COO2 HP 16.06 128.48 - 128.48 (1) 42.12 336.96 - 336.96 AHU-COO1 COO4 AHU-COO1 30.04 240.32 - 240.32 AHU-COO2 40.76 326.08 - 326.08 AHU-COO3 43.04 344.32 - 344.32 AHU-COO4 52.60 420.80 - 420.80 (2) 166.44 1,331.52 - 1,331.52 DH-COO2, COO3, N/A DH-COO2 4.54 36.32 48.25 84.57 DH-COO3 4.42 35.36 39.93 75.29 DH-N/A 1.61 12.88 25.50 38.38 (3) 10.57 84.56 113.68 198.24 219.13 1,753.04 113.68 1,866.73

= 1,866.73

(3..52) 28 31

.2

- () - Humidity Ratio

23.8 oC / 54%RH

9.97 g/kg(a)

22 oC / 40.6%RH

6.69 g/kg(a) - () - Humidity Ratio

32.5oC / 50.5%RH

15.60 g/kg(a)

27.9oC / 42.8%RH

10.08 g/kg(a) (kW/ton) 0.85 0.85 (Post Energy Consumption) (Post Energy Consumption) - 24

- 298 - 2.77

FAU-C001-HP (DH-C001) - = 6.44 () = 19.62 = (6.44 + 19.62) x 24 x 298 = 186,381 = 186,381 x 2.77 = 516,275.70 / FAU-C002-HP (FAU-C001) - = 3.83 () = 12.23 = (3.83 + 12.23) x 24 x 298 = 114,861

(3..52) 29 31

= 114,861 x 2.77 = 318,165.30 / DH-COO2 () = 48.25 DH-COO3 () = 39.93 88.18 = 88.18 x 24 x 298 = 630,663.36 1,055 MJ/MMBtu = 630,663.36 / 1,055 = 597.79 MMBtu/ 299.20 MMBtu = 597.79 x 299.20 = 178,857.32 / DH-C002, COO3, N/A - DH-COO2 = 4.54 DH-COO3 = 4.42 DH-N/A = 1.61 Heater DH-N/A = 25.5 / 3.6 = 7.08 = 17.65 = 17.65 x 24 x 298 = 126,257 = 126,257 x 2.77 = 349,730.89 /

AHU-COO1 COO4 AHU-COO1 = 30.04 AHU-COO2 = 40.76 AHU-COO3 = 43.04 AHU-COO4 = 52.60 = 166.44

(3..52) 30 31

= 166.44 x 24 x 298 = 1,190,379 = 1,190,379 x 2.77 = 3,297,349.50 / = DH-COO2,O3 = 630,663.36

= 597.79 MMBtu/ = FAU-C001-HP +

FAU-C002-HP + DH-C002, COO3, N/A + AHU-COO1 COO4

= 186,381 + 114,861 + 126,257 + 1,190,379

= 1,617,878 = FAU-C001-HP +

FAU-C002-HP + DH-C002, COO3, N/A + AHU-COO1 COO4

= 516,275.70 + 318,165.30 + 349,730.89 + 3,297,349.50

= 4,481,521.40

(3..52) 31 31

(1) Heat Pipe Technology Inc. 2002. Wrap-Around Dehumidifier Heat Pipes, available URL:

http://www.heatpipe.com/ (2) 2541. What are Heat Pipes, (3) Heat Pipe Technology, Inc. Why Heat Pipes? Case Summaries, available URL:

http://www.heatpipe.com/ (4) . 013

, 1, : , 2547

(5) . ,

(6) . ,

(.) 17 1 10330

0-2223-0021-9, 0-2222-4102-9 0-2225-3785, 0-2226-3943

www.dede.go.thE-mail : dede@dede.go.th

1 15 / 10400 0-2642-1270 0-2642-1242

www.bright-ce.comE-mail : contact@bright-ce.com