本文首先说明(火积)耗散理论避免了最小熵产原理和傅里叶定律间的矛盾,显示了其在处理导热问题上的优越性.然后利用热力学(火积)和熵的关系,推出了换热器中由流体阻力引起的(火积)耗散表达式.
In the present work, it is shown that the entransy dissipation theory avoids the conflict between the minimum entropy generation theorem and the conventional Fourier law, which demonstrates the apparent advantage of the entransy dissipation theory on its application to heat conduction problems. Then the expression of the entransy dissipation caused by fluid friction in a heat exchanger is developed by applying the relations between the thermodynamic entransy and entropy.
参考文献
| [1] | Bejan A .The Concept of Irreversibility in Heat Exchanger Design:Counter-Flow Heat Exchangers for Gas-to-Gas Applications[J].Journal of Heat Transfer,1997,99:374-380. |
| [2] | Bejan A.Entropy Generation through Heat and Fluid Flow[M].New York:wiley,1982 |
| [3] | Bejan A.Advanced Engineering Thermodynamics[M].New York:wiley,1988 |
| [4] | Bejan A.Entropy Generation Minimization[M].New York:crc Press,1995 |
| [5] | Bejan A. .ENTROPY GENERATION MINIMIZATION - THE NEW THERMODYNAMICS OF FINITE-SIZE DEVICES AND FINITE-TIME PROCESSES [Review][J].Journal of Applied Physics,1996(3):1191-1218. |
| [6] | Hesselgreaves J E .Rationalisation of Second Law Analysis of Heat Exchanger[J].International Journal of Heat and Mass Transfer,2000,43:4189-4204. |
| [7] | V. Bertola;E. Cafaro .A critical analysis of the minimum entropy production theorem and its application to heat and fluid flow[J].International Journal of Heat and Mass Transfer,2008(7/8):1907-1912. |
| [8] | Jaynes E T .The Minimum Entropy Production Principle[J].Annual Review of Physical Chemistry,1980,31:579-601. |
| [9] | Landauer R .Inadequacy of Entropy and Entropy Derivatives in Characterizing the Steady State[J].Physical Review A,1975,12:636-630. |
| [10] | Ziman J M .The General Variational Principle of Transport Theory[J].Canadian Journal of Physics,1956,34:1256-1273. |
| [11] | Zeng-Yuan Guo;Hong-Ye Zhu;Xin-Gang Liang .Entransy—A physical quantity describing heat transfer ability[J].International Journal of Heat and Mass Transfer,2007(13/14):2545-2556. |
| [12] | 过增元,梁新刚,朱宏晔.（火积）--描述物体传递热量能力的物理量[J].自然科学进展,2006(10):1288-1296. |
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