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Title: Energy- and exergy-based working fluid selection and performance analysis of a high-temperature PEMFC-based micro combined cooling heating and power system
Authors: Chang, Huawei
Wan, Zhongmin
Zheng, Yao
Chen, Xi
Shu, Shuiming
Tu, Zhengkai
Chan, Siew H.
Chen, Rui
Wang, Xiaodong
Keywords: Micro-CCHP
High-temperature PEMFC
Working fluid selection
Energy and exergy analysis
Organic Rankine cycle
Vapor compression cycle
Issue Date: 2017
Publisher: © Elsevier
Citation: CHANG, H. ... et al, 2017. Energy- and exergy-based working fluid selection and performance analysis of a high-temperature PEMFC-based micro combined cooling heating and power system. Applied Energy, 204, pp. 446-458.
Abstract: A combined cooling heating and power (CCHP) system based on high-temperature proton exchange membrane fuel cell (PEMFC) is proposed. This CCHP system consists of a PEMFC subsystem, an organic Rankine cycle (ORC) subsystem and a vapor compression cycle (VCC) subsystem. The electric power of the CCHP system is 8 kW under normal operating conditions, the domestic hot water power is approximately 18 kW, and the cooling and heating capacities are 12.5 kW and 20 kW, respectively. Energy and exergy performance of the CCHP system are thoroughly analyzed for six organic working fluids using Matlab coupled with REFPROP. R601 is chosen as the working fluid for ORC subsystem based on energy and exergy analysis. The results show that the average coefficient of performance (COP) of the CCHP system is 1.19 in summer and 1.42 in winter, and the average exergy efficiencies are 46% and 47% under normal operating conditions. It can also be concluded that both the current density and operating temperature have significant effects on the energy performance of the CCHP system, while only the current density affects the exergy performance noticeably. The ambient temperature can affect both the energy and exergy performance of the CCHP system. This system has the advantages of high facility availability, high efficiency, high stability, low noise and low emission; it has a good prospect for residential applications.
Description: This paper is closed access until 25th July 2018.
Sponsor: This work is supported by the National Natural Science Foundation of China (Nos. 51376058, 51476119 and 51676067) and the International Science and Technology Cooperation Program of China (No. 2014DFA60990).
Version: Accepted for publication
DOI: 10.1016/j.apenergy.2017.07.031
URI: https://dspace.lboro.ac.uk/2134/26112
Publisher Link: http://dx.doi.org/10.1016/j.apenergy.2017.07.031
ISSN: 0306-2619
Appears in Collections:Closed Access (Aeronautical and Automotive Engineering)

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