Performance Analysis of a Hybrid System Consisting of a Molten Carbonate Direct Carbon Fuel Cell and an Absorption Refrigerator

Houcheng Zhang, Jiatang Wang, Jiapei Zhao, Fu Wang, He Miao and Jinliang Yuan
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Houcheng Zhang: Department of Microelectronic Science and Engineering, Ningbo University, Ningbo 315211, China
Jiatang Wang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Jiapei Zhao: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Fu Wang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
He Miao: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Jinliang Yuan: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

Energies, 2019, vol. 12, issue 3, 1-13

Abstract: By integrating an Absorption Refrigerator (AR), a new hybrid system model is established to reuse the waste heat from a Molten Carbonate Direct Carbon Fuel Cell (MCDCFC) for additional cooling production. Various irreversible losses in each element of the system are numerically described. The operating current density span of the MCDCFC that allows the AR to work is derived. Under different operating conditions, the mathematical expressions for equivalently evaluating the hybrid system performance are derived. In comparison with the stand-alone MCDCFC, the maximum attainable power density of the proposed system and its corresponding efficiency are increased by 5.8% and 6.8%, respectively. The generic performance features and optimum operating regions of the proposed system are demonstrated. A number of sensitivity analyses are performed to study the dependences of the proposed system performance on some physical parameters and operating conditions such as operating temperature, operating current density, and pressure of the MCDCFC, cyclic working fluid internal irreversibility inside the AR, thermodynamic losses related parameters and the anode thickness of the MCDCFC. The obtained results may offer some new insights into the performance improvement of an MCDCFC through a reasonable heat management methodology.

Keywords: molten carbonate direct carbon fuel cell; absorption refrigerator; hybrid system; irreversible loss; performance analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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