| Summary: | 碩士 === 龍華科技大學 === 機械系碩士班 === 91 === This article is used by the second law of thermodynamics as a basis to establish the evaluation of exergy analysis to the energy economics of power plant and the energy dissipation of the heat sink. The irreversibility and exergy destruction are also studied to power plants and heat sink.
First of all, the nuclear power plant must be build the thermal database for systematic elements. By analyzing exergy & exergy destruction through various type of equipment, it is shown that the maximum irreversibility is the reactor and then the steam turbine, feedwater heater etc. These results showed the same trend as the referenced nuclear power plant. This information provides references for improve efficiency, system components and optimal cost base.
In the economic studies of heat sink, exergy destruction analysis is used to plate fin, circular pin fin, and square pin fin. By calculating heat sink's entropy generation minimization, the minimum number of heat sink slice is obtained. The results by entropy generation are different from those by the conventional thermal management. To extend the application of the proposed method, the software Icepak used to simulate the electronic cooling is used in this paper. Good correlations between the numerical results and analytical solutions are shown. Based on this exergy analysis, the design of heat sink can be obtained optimally.
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