In this study, an analysis method is developed and implemented on a computer code to simulate the operation of triple effect absorption refrigeration system under different conditions. Exergy loss of each component is calculated. The absorber has the highest exergy loss rate.
For commonly used condenser and absorber cooling water temperature (25°C/30°C) and chilled water temperature (12°C/7°C) the maximum exergetic efficiency value of the triple effect refrigeration system is about 35.1 %
For a given HPG temperature (here 190°C) The effect of LPG temperature is more important than the MPG temperature. The maximum COP and ηexergy, are obtained for a maximum value of LPG and MPG temperatures.
For a given MPG temperature there is an interval of LPG temperature for which the triple effect absorption system can operate. Out from this interval of temperature the system does not function any more.
The second law analysis used in this study facilitates the identification of the system components with high exergy loss. The results of the exergy analysis presented in this paper can be used in thermo-economic optimization of triple effect absorption refrigeration system.