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Heat Exchanger Design by Entropy Generation & Present Cost Minimization

机译：通过熵产生和当前成本最小化进行换热器设计

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摘要

Thermodynamic optimization of a heat exchanger design through entropy generation minimization is a useful method in determining the most thermodynamically efficient design for the given thermodynamic constraints. The most thermodynamically efficient design may not be the most desirable, because the production of the most thermodynamically efficient design may not be economically desirable. Costs incurred must be taken into account to make the design effort worth while. It is noted that thermodynamic efficiency has an important role in affecting economic considerations. It is interesting to understand the relationship between these two design considerations. In this study a heat exchanger is optimized separately by two objective functions: entropy generation minimization and present cost minimization. The heat exchanger is optimized for a given heat transfer rate in terms of objective functions. The two optimum designs are identified and compared. In addition, a discussion is made over the tradeoffs for both methods in the search for the optimal design.
机译：通过最小化熵产生来对热交换器设计进行热力学优化是确定给定热力学约束条件下最热力学效率最高的设计的有用方法。热力学效率最高的设计可能不是最理想的，因为生产热力学效率最高的设计可能在经济上也不理想。必须考虑产生的成本，以使设计工作值得一会儿。值得注意的是，热力学效率在影响经济方面具有重要作用。了解这两个设计注意事项之间的关系很有趣。在这项研究中，通过两个目标函数分别对热交换器进行了优化：熵产生最小化和当前成本最小化。换热器根据目标函数针对给定的传热速率进行了优化。确定并比较了两种最佳设计。另外，讨论了两种方法在寻找最佳设计时的权衡。

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