Harvesting of PEM fuel cell heat energy for a thermal engine in an underwater glider

Wang, Shuxin; Xie, Chen; Wang, Yanhui; Zhang, Lianhong; Jie, Weiping; Hu, S. Jack

doi:10.1016/j.jpowsour.2007.03.043

Cited by 24 publications

(10 citation statements)

References 24 publications

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“…In practice, this energy component is never completely utilised because of various thermodynamic and electrochemical irreversibilities [37,38]. Entropy can be used to calculate the theoretical limits to energy conversion.…”

Section: Original Research Papermentioning

confidence: 99%

The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell‐Gas Turbine Hybrid Cycles

2010

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A combined power system with solid oxide fuel cell (SOFC) and gas turbine (GT) is modelled and analysed thermodynamically in this paper. A novel optimisation strategy including the design of optimal parameters is proposed and applied to the hybrid system. Different sources of irreversible losses are specified, and entropy analyses are used to indicate the multi‐irreversibilities existing, and to assess the work potentials of the system. Expressions of the power output and efficiency for both the subsystems and the SOFC‐GT hybrid system are derived. The optimal performance characteristics are presented and discussed in detail through a parametric analysis. The developed model is expected to provide not only a convenient tool to determine the optimal system performance and component irreversibility, but also an appropriate basis to design similar complex hybrid power plants. This new approach can be further extended to other energy conversion settings and electrochemical systems. Decision makers should therefore find the methodology contained in this paper useful in the comparison and selection of advanced heat recovery systems.

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Section: Original Research Papermentioning

confidence: 99%

The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell‐Gas Turbine Hybrid Cycles

2010

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“…As current density is changed by load and operation parameters including pressure, relative humidity and stoichiometery, the PEMFC efficiency eventually takes place the corresponding change. Through the analysis of experimental results, a conclusion can be drawn that temperature has a more significant influence in the performance of the PEMFC than other operation variables [41,42]. Fig.…”

Section: The Pemfc Subsystemmentioning

confidence: 99%

“…Generally, the temperature of the PEMFC changes as current density increases with no cooling water control, because the heatto-power ratio also increases as the electrochemical reactions become more irreversible [18,41]. For the utilization of thermal energy by the TEC subsystem under the condition of the variable electrical loads of the PEMFC, it is necessary to determine the change in heat production due to increase of current density or electrical loads.…”

Section: The Pemfc Subsystemmentioning

confidence: 99%

Improvement of proton exchange membrane fuel cell overall efficiency by integrating heat-to-electricity conversion

Xie

Wang

Zhang

et al. 2009

Journal of Power Sources

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“…To improve the performance of the thermal engine, the authors have proposed a PEMFC-thermal engine cogeneration power system for thermal underwater glider [8] . The PEMFC-thermal engine uses the heat from a PEMFC stack to drive the thermal engine for navigation while the PEMFC stack provides electricity for the sensors, control system and control actuators of the glider.…”

Section: Introductionmentioning

confidence: 99%

A novel power system for thermal underwater gliders with PEMFC

Wang

Jiang

Zhang

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Underwater gliders are effective buoyancy-driven vehicles for sea sampling tasks because they are inexpensive, reusable and achieve a high duration. In all kinds of them, the thermal underwater glider which is propelled by a thermal engine has better performance. But the properties of thermal material and ocean conditions limit the thermal glider's behaviour. A cogeneration power system for the thermal underwater glider was developed in this work. A PEMFC-thermal engine cogeneration power system was used to improve the performance of the thermal engine. Experiments of the prototype indicate that the power system proposed can promote the flexibility and adaptability of the thermal glider. When the PEMFC operates at 400 mA cm -2 current density, the heat from the PEMFC is able to make thermal material have a 12.64% volume change. Meanwhile the heat can provide up to 2.05 MPa pressure in the accumulator of the thermal engine, which assures the underwater glider to navigate in all seas.

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Harvesting of PEM fuel cell heat energy for a thermal engine in an underwater glider

Cited by 24 publications

References 24 publications

The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell‐Gas Turbine Hybrid Cycles

The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell‐Gas Turbine Hybrid Cycles

Improvement of proton exchange membrane fuel cell overall efficiency by integrating heat-to-electricity conversion

A novel power system for thermal underwater gliders with PEMFC

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