Performance Optimization of a Class of Finite Time Heat Engines |
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| Authors: | Lingen Chen Fengrui Sun Chih Wu |
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| Institution: | 1. Postgraduate School, Naval University of Engineering , Wuhan, P. R., China;2. Mechanical Engineering Department , U. S. Naval Academy , Annapolis, MD, USA |
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| Abstract: | The effect of heat resistance and heat leakage on the optimal performance of finite time heat engines is investigated in this paperbased on a generalized heat transfer law q ∞ Δ(Tn). The analytical relation between optimal power output and efficiency for steady-state flow irreversible heat engines is derived. The analysis includes the optimal performance characteristics of several types of heat engines with different loss item and different heat transfer laws. A numerical example is provided for illustrating the power output versus efficiency characteristics. Results shown that the heat transfer law does affect the performance of these heat engines. |
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