CAJ | 학술논문

应用有限时间热力学理论,基于熵产最小法,对热电制冷系统随有限温度的变化、由外部热源与内部工质之间的温差而形成的热漏及内部耗散所产生的传热不可逆性进行了最优化研究,建立了不可逆热电制冷循环模型.研究结果表明,不同的参数对热电制冷系统的影响有着显著的区别.本文推导出熵产率最小时对应的优化性能特性关系和重要设计参数的最佳值;绘出了相关优化性能曲线并说明了这些参数在总体和优化性能中的作用.计算结果对实际热电制冷系统优化条件的确定具有一定参考价值.
응용유한시간열역학이론,기우적산최소법,대열전제랭계통수유한온도적변화、유외부열원여내부공질지간적온차이형성적열루급내부모산소산생적전열불가역성진행료최우화연구,건립료불가역열전제랭순배모형.연구결과표명,불동적삼수대열전제랭계통적영향유착현저적구별.본문추도출적산솔최소시대응적우화성능특성관계화중요설계삼수적최가치;회출료상관우화성능곡선병설명료저사삼수재총체화우화성능중적작용.계산결과대실제열전제랭계통우화조건적학정구유일정삼고개치.
With the entropy generation minimization (EGM) method, the thermodynamical performance optimization in a thermoelectric refrigeration system is studied. The optimization is affected by the irreversibility of heat transfer caused by finite temperature differences, the heat leak between external heat reservoirs and the internal dissipation of working fluids. EGM is taken as an objective function for the optimization. The objective function and design parameters are obtained. Optimal performance curves are presented by thermal and electronic parameters. Effects of these parameters on general and optimal performances are investigated. Results are helpful in determining optimal design conditions in real thermoelectric refrigeration systems.