作者
Eridei Amakiri, Yousif Al-Sagheer, Ahmad El-kharouf, Robert Steinberger-Wilckens
发表日期
2022/11/1
期刊
Journal of Heat Transfer
卷号
144
期号
11
页码范围
114503
出版商
American Society of Mechanical Engineers
简介
Solid oxide fuel cells (SOFCs) generate electricity with high quality waste heat which if harnessed and used as energy source for vapor absorption refrigeration systems (VARS) will address the emission issues related to refrigerated transport infrastructure. The temperature range of the heat source required at the desorber of the VARS is between 120 °C and 200 °C, while SOFCs cathode exhaust heat temperatures are 600 °C and above. Therefore, an internally finned double pipe heat exchanger (DPHX) was used in this study with thermal oil as the coupling fluid to experimentally couple the SOFC cathode exhaust heat with the VARS indirectly. The experimental setup mimics a 5 kWe SOFC stack. Results showed that 1.84 kW of heat was recovered at a cathode exhaust flowrate of 24.64 L s−1 resulting in a heat exchanger effectiveness of 12.22% and overall heat transfer coefficient of 60.15 W m−2 K−1 …
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