Gas Fired Water Ammonia Absorption Chiller

8/10/2019 Gas Fired Water Ammonia Absorption Chiller

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GAS FIRED WATER-AMMONIA ABSORPTION CHILLERRinnal, Korea Seminar

1! In"ro#$%"ion

Gas fired water-ammonia absorption chiller (GA) use an absorption-based cooling cycle with solutionof water-ammonia. It is power by natural gas or LPG to produce chilled water down to temperature of

3°.

&! Te%'nolo()

!he GA consists mainly"

i. #urner ii. Generator iii. $ectifier i%. ondenser %. &eat 'changer (Pipe in pipe type)%i. '%aporator %ii. Absorber

%iii. irculation Pump

!he gas burner use natural gas or LPG to heat up the generator.

!he generator content concentrated water-ammonia solution. !he solution is heated up to *+°

under pressure of ,bar. !he ammonia e%aporates and separated from the water in the generator at

+° at ,bar.

!he ammonia %apor is then pipe to the rectifier to cool down to the temperature of ° by the return

water-ammonia solution from the circulation pump. !he rectifier also help to condense down the water %apor consist in the ammonia %apor.

!he ammonia %apor is the further cooled down in the condenser by eternal air flow (fan is used). !he

ammonia %apor is condensed to li/uid in condenser at the temperature of 03 °.

, bar

+°

*+°

°

, bar

03°

3 bar

31°

3 bar

*1°0 bar

*°

°

3*°

1+°

00°

+°

hilledwater

°

hilledwater

°



!he pressure of li/uid ammonia after condenser is then reduce from , bar to 3 bar by the used of

restrictor. !he temperature of li/uid ammonia will dropped to 31° naturally after the restrictor.

!hen2 the li/uid ammonia is cooled down in the pipe-in-pipe heat echanger to the temperature of

*1°.

!he pressure of li/uid ammonia is further reduced to 0 bar by epansion restrictor again. !he

temperature is further reducing naturally to *°.

!he ammonia li/uid is then allowed to e%aporate in the e%aporator. !he e%aporation of ammonia willcool the incoming chilled water by absorbing the heat from the chilled water.

After the e%aporation process2 the ammonia %apor is then piped to the absorber2 where it meets thehot water which is remained after the separation of ammonia in the generator. &ere occurs theabsorption. !he hot water spray from the top of absorber2 absorb the ammonia %apor to becomewater-ammonia solution as initial li/uid solution. !he water-ammonia solution left the absorber at

1+°.

!he water-ammonia solution is then cooled down in the cooler by eternal air flow to 00 °2 before it is

piped to the circulation pump.

!he circulation pump pumps the water-ammonia solution to the rectifier and absorber for the purposeof absorbing heat (heat echange) and then to the generator to begin the cycle again.

*! A++li%a"ion

GA generally design for the used for air conditioning of residential2 commercial and industrialen%ironments.

!he GA can also be manufactured with an integrated heating module (chiller-heater units) to supply2

either simultaneously or alternately2 chilled water down to 3° and hot water up to 1°.

4



! S+e%ii%a"ion

5ultiple basic units can be group together to pro%ide wide range of capacity as below.

De.%ri+"ion Coolin( Coolin( An# Hea"in(

ooling apacity (67) . .

&eating apacity (67) - 3*.

7ater 8low(l9h) *23 *23

Gas :G2 LPG

Gas consumption(m39h-:G)

*. *.

& - 3.;1

Power supply(67)

+.1* +.1*

& - +.+;

<perating sound (d#)

7eight (6g) 30+ 03+

=i>e (㎜2 &7?) 2*1+2*3+1+ 2*1+2*3+2*0+

C = 35 kW (30,100 kcal/h)

H = 32,5 kW (27,950 kcal/h)

C = 35 kW (30,100 kcal/h)H = 65 kW (55,900 kcal/h)

C = 52,5 kW (45,150 kcal/h)

H = 32,5 kW (27,950 kcal/h)

C = 52,5 kW (45,150 kcal/h)

H = 97,5 kW (83,850 kcal/h)

C = 52,5 kW (45,150 kcal/h)

H = 65 kW (55,900 kcal/h)

C = 69,6 kW (59,856 kcal/h)

H = 32,5 kW (27,950 kcal/h)

C = 69,6 kW (59,856 kcal/h)

H = 65 kW (55,900 kcal/h)

C = 69,6 kW (59,856 kcal/h)

H = 97,5 kW (83,850 kcal/h)

C = 69,6 kW (59,856 kcal/h)

H = 130 kW (111,800 kcal/h)



/! E0am+le o A++li%a"ion

<ne unit of GA connected to airconditioning2 room heater2 floor heater26itchen and bath room.

Air condition

8loor&eater

itchen #ath $oom

&ot7ater

Gas Fired Water Ammonia Absorption Chiller

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