Development of high efficiency double-effect absorption cycles using multi-heat sources

The objective of this study is to develop a high-efficiency double effect absorption cycle using multi-heat sources for tri-generation application. The tri-generation system produces electricity, heating and cooling loads at the same time. The double effect absorption cycles with parallel, serial and reverse flows are compared. A new cycle with high efficiency is selected depending on the arrangements of generators. The double-effect absorption refrigeration system with H₂O/LiBr consists of two generators, condensers, solution heat exchangers, expansion valves, an absorber and an evaporator. The absorption refrigeration system uses the high temperature steam and water generated from industrial process as the multi-heat sources. It is found the double effect absorption cycles with the parallel flow is the most appropriate for tri-generation application. It is also found that the higher the heat source ratio is, the higher the COP is obtained.