Performance of solar air-conditioning system using absorption chiller

Absorption chillers use thermal energy as driving source, and have a feature of being capable of saving electricity. Meanwhile, the global warming issue has worsened markedly in recent years, which causes us to be confronted with the urgent task of realization of low-carbon society. Absorption chillers are also strongly required saving-energy. Under these situations, we have developed a single-double effect combined absorption chiller for the solar cooling system. It enables low temperature solar hot water at 75degreeC under the cooling operation or even lower temperature hot water depending on loading conditions and cooling water conditions. And we constructed the demonstration plant of this system at University of Indonesia. We report the outline and the performance of the chillers and demonstration plant in Indonesia.