A power and cooling cogeneration system using mid/low-temperature heat source

Liuli Sun, Wei Han, Xuye Jing, Danxing Zheng and Hongguang Jin

Applied Energy, 2013, vol. 112, issue C, 886-897

Abstract: An ammonia–water based system for power and cooling cogeneration using mid/low-temperature heat source is proposed and investigated in this study. The proposed system consists of a Rankine cycle and an absorption refrigeration cycle. The high-temperature portion of waste heat is used for power generation, whereas the low-temperature part is used for refrigeration. In addition, the exhaust heat of the power subsystem is recovered by the refrigeration subsystem. Simulation results show that the equivalent heat-to-power and exergy efficiencies of the proposed cogeneration system can reach 18.6% and 42.0%, respectively. Compared with separate power and refrigeration systems, the proposed system consumes 17.1% less heat with the same output. The effect of turbine exhaust vapor temperature on system performance is investigated. An experimental rig of an absorption refrigeration system with a cooling capacity of 15kW was built and tested. The proposed system was found to be capable of utilizing mid/low-temperature heat source more efficiently.

Keywords: Ammonia–water binary working fluid; Mid/low-temperature heat source; Absorption refrigeration; Power and cooling cogeneration (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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DOI: 10.1016/j.apenergy.2013.03.049

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