摘要
以反映热机循环输出功率和火用损失率之比的生态学性能系数(ECOP)为目标,用有限时间热力学理论和方法研究广义不可逆卡诺热机的循环性能。导出了线性唯象传热规律(Q∝Δ(T-1))下ECOP的解析式,通过数值计算分析了各种目标极值条件下ECOP与循环功率、效率、熵产率、生态学函数E之间的关系,主要研究了热源温比对最优性能的影响。
Performance of generalized irreversible Carnot engine was analyzed using finite-time thermodynamics, with the objective of ecological coefficient of performance ECOP which is defined as the ratio of power output to the loss rate of availability. The analytical formulate of ECOP was derived with the linear phenomenological transfer law of Q∝△（T^-1）. The relations of ECOP with the power, efficiency, entropy generation rate and ecological function of the cycle were studied using numerical examples. The focus of the study is on the influences of heat reservoir temperature ratio on the optimal performances.
出处
《热科学与技术》
CAS
CSCD
2010年第1期43-50,共8页
Journal of Thermal Science and Technology
基金
国家自然科学基金项目(109050593)
教育部新世纪优秀人才支持计划项目(NCET-04-1006)
全国优秀博士学位论文作者专项资金资助项目(200136)
关键词
有限时间热力学
广义不可逆卡诺热机
生态学性能系数
热源温比
finite-time thermodynamics
generalized irreversible Carnot heat engine
ecological coefficient of performance
reservoir temperature ratio
