ISSN: 23791748
ISBN: 9781567004304

MAXIMUM EXERGY OUTPUT RATE FOR AN ENDOREVERSIBLE CLOSED BRAYTON CYCLE COMBINED COOLING, HEATING AND POWER PLANT
Huijun Feng Institute of Thermal Science and Power Engineering, Naval University of Engineering,
Wuhan 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering,
Wuhan 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China
Lingen Chen Institute of Thermal Science and Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China
Zhihui Xie Institute of Thermal Science and Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China
Yanlin Ge Institute of Thermal Science and Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering,
Wuhan, 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China
ResumoA combined cooling, heating and power plant (CCHPP), composed of an endoreversible closed Brayton cycle and absorption refrigerator, is studied in this paper. By introducing the finite time thermodynamics, the formula
of the exergy output rate (EOR) of the CCHPP is derived. With the help of Powell arithmetic, the compressor pressure ratio of the Brayton cycle and distributions of 7 heat exchanger heat conductances (HEHCs) are optimized, and the maximum EOR of the CCHPP is obtained. It shows that the hotside HEHC is the largest one among the discussed HEHCs, and several parameters, such as the total HEHC and ratio of heat reservoir temperature to the surrounding temperature, on the optimal performances of the CCHPP are analyzed.

