不可逆量子狄塞尔热机循环有效功率优化  

Effective power optimization of irreversible quantum Diesel heat engine cycle

作　　者：丁佳 殷勇 王睿思 范宇和 汪浩[1] DING Jia;YIN Yong;WANG Rui-si;FAN Yu-he;WANG Hao

机构地区：[1]武汉工程大学光电信息与能源工程学院,湖北武汉430205 [2]武汉工程大学热科学与动力研究所,湖北武汉430205

出　　处：《节能》2023年第8期49-53,共5页Energy Conservation

摘　　要：不可逆量子狄塞尔热机循环模型由两个等熵过程、一个等势阱宽度过程和一个等压力过程组成,循环工质是一维无限深势阱中的粒子。考虑热漏对系统的影响,得到循环的热效率、无量纲输出功率与无量纲有效功率的表达式。分析截止比、压缩比与热漏系数对循环性能参数的影响。循环效率与压缩比的变化曲线单调递增,在给定压缩比下,循环效率与截止比呈负相关,与热漏系数呈负相关。无量纲输出功率与压缩比的关系曲线为单调递减曲线,给定压缩比,无量纲输出功率与截止比呈正相关。无量纲有效功率与压缩比的关系曲线为类抛物线形,截止比和热漏系数给定时,存在一个最佳的压缩比使无量纲有效功率取极大值。无量纲有效功率随效率变化曲线呈单调递增。The cycle model of an irreversible quantum Diesel heat engine is composed of two isentropic branches,an equal-L branch and an isobaric branch.The working material of the cycle are particles in a one-dimensional infinite potential well.The analytic formulas for the thermal efficiency,the dimensionless output power and the dimensionless effective power of the cycle are deduced in consideration of the effect of heat leakage on the system.The effects of cut-off ratio,compression ratio and heat leakage coefficient on cyclic performance parameters were analyzed.The plots of cycle efficiency as a function of compression ratio are monotonically increasing,if the compression ratio is given,the cycle efficiency has a negative correlation with the cut-off ratio and a negative correlation with the heat leakage coefficient.The plots of the dimensionless output power as a function of compression ratio are monotonically decreasing,if the compression ratio is given,the dimensionless output power is positively related to the cut-off ratio.The curves of the dimensionless effective power versus compression ratio are parabolic,and if the cut-off ratio and heat leakage coefficient are given,the optimal compression ratio can be obtained to maximize the dimensionless effective power.The curves of the dimensionless effective power versus efficiency are monotonically increasing.

关 键 词：有限时间热力学 量子狄塞尔热机循环 有效功率 

分 类 号：O414[理学—理论物理]