Effect of Low Pressure Generator Temperature on the Performance of Double Effect Vapour Absorption Heat Transformer

In this paper, exergy analysis of double effect lithium bromide/water absorption heat transformer system is presented. The system consists of a second effect generator between the generator and condenser of the single effect absorption heat transformer system and two solution heat exchangers between the absorber and the two generators. The exergy analysis is carried out for each component of the system. All exergy destructed that exist in double effect lithium bromide/water absorption heat transformer system are calculated. In addition to the coefficient of performance and the exergetic efficiency of the system, the number of exergy destructed of each component of the system is also estimated. The effect of low pressure generator temperature on the performance of double effect vapour absorption heat transformer is analysed. This study gives which component of the absorption heat transformer system should be developed.