Abstract
ABSTRACT:Thermodynamic cycles using binary mixtures as working fluids offer a high poten-tial for utilization of low-temperature heat sources. This paper presents a thermodynamic perfor-mance analysis of Goswami cycle which was recently suggested to produce power and cooling simultaneously and combines the Rankine cycle and absorption refrigeration cycle by using ammonia- water mixture as working fluid. Effects of the system parameters such as concentration of ammonia and turbine inlet pressure on the system are parametrically investigated. Results show that refrige-ration capacity or thermal efficiency has an optimum value with respect to ammonia concentration as well as to turbine inlet pressure.Keywords:Low temperature source(저온 열원), Ammonia-water mixture(암모니아-물 혼합물), Rankine cycle(랭킨사이클), Absorption refrigeration(흡수냉동), Cogeneration(병합생산) †Corresponding author Tel.: +82-54-478-7292; fax: +82-54-478-7319 E-mail address: khkim@kumoh.ac.kr 기 호 설 명 ：비엔탈피 [kJ/kg] ：상대질량유량 [kg/kg]
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