<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%> FortePak - Products - Hitachi Absorption Chillers
forte logo
news icon careers sitemap
search go
btn_home btn_corporate btn_services btn_products btn_clients btn_projects btn_contactus    
leftpnael
Power Generators
spacer
arrow Mitsubishi MGS Series
spacer
arrow Perkins Engines
spacer
Chillers
spacer
arrow Hitachi Absorbtion Chillers
spacer
arrow Hitachi Centrifugal Chillers
spacer
Cooling Towers
spacer
arrow Kuken Cooling Tower
spacer
Insulation Tubes
spacer
arrow ForteFlex
spacer
corporate
spacer
careers  

The Principle Function of an Absorption Chiller

The absorption chiller is a machine to produce chilled water by using heat such as steam, hot water, gas, oil.

Pure water is used as refrigerant and lithium bromide solution is used as absorbent.
Chilled water is produced by the principle that liquid, which evaporates easily, absorbs heat from surrounding when it evaporates.
 

The refrigerant (water) evaporate at around 4C under the high vacuum condition of 754mmHg in the evaporator. When the refrigerant (water) evaporate, the latent heat of vaporization generate.
This latent heat of vaporization can cool the chilled water which runs into the heat exchanger tubes in the evaporator by transfer of heat to the refrigerant (water).


EVAPORATOR


In order to keep evaporating, the refrigerant vapor must be discharged from the evaporator and refrigerant (water) must be supplied. The refrigerant vapor is absorbed into lithium bromide solution which is convenient to absorb the refrigerant vapor in the absorber. The heat generated in the absorption process is led out of system by cooling water continually.


ABSORBER


As lithium bromide solution is diluted, the effect to absorb the refrigerant vapor reduces. In order to keep absorption process, the diluted solution must be made concentrated lithium bromide.
Absorption chiller is provided with the solution concentrating system by the heating media such as steam, hot water, gas, oil, which performs such function is called generator.
The concentrated solution flows into the absorber and absorbs the refrigerant vapor again.


HIGH PRESSURE GENERATOR


In order to above works continually and to make complete cycle, the following two functions are required.

1.To concentrate and liquefy the evaporated refrigerant vapor, which is generated in the high pressure generator.
2.To supply the condensed water to the evaporator as refrigerant (water).


CONDENSER

arrow How an absorption chiller works



 




© Copyright 2007. Forte Pakistan All rights reserved