A high-efficiency absorption cycle using multi-heat sources is developed trigen application. HX 2-2 cycle with two heat exchangers (SDHHX and DHX) is recommended as the best candidate. THotwaterTHotwater has much more significant effect on the COP and Q̇E than TsteamTsteam in the HX 2-2 cycle. The most important UA to affect the COP is UALGUALG while that to affect Q̇E is UAAUAA.