摘要
基于[火用]分析的生态学函数,研究了三热源热布朗热变换器循环的生态学性能。导出了生态学函数的解析式,并研究了循环在最大生态学函数目标下的供热率和供热系数特性。通过与供热率目标下的性能进行比较,说明了生态学函数作为优化目标时三热源热布朗热变换器的性能优势。结果表明:通过调整势垒高度和外力,可使三热源热布朗热变换器工作在最大生态学函数目标下。当以生态学函数代替供热率作为优化目标时,三热源热布朗热变换器可以以牺牲较小的供热率为代价,换取供热系数的较大提升。
With the exergy-based ecological function,we studied the ecological performance of three-heat-reservoir thermal Brownian heat transformer.An expression of ecological function was derived,and the heating load and coefficient of performance(COP)of cycle under maximal ecological function criteria were studied.The performance advantages of three-heat-reservoir thermal Brownian heat transformer with ecological function as optimization objective were shown by comparing with the performance under heating load objective.The results show that the three-heat-reservoir thermal Brownian heat transformer can operate under the maximum ecological function objective by adjusting potiential barrier height and external force;and when the heating load is replaced by ecological function as optimization objective,the COP of the three-heat-reservoir thermal Brownian heat transformer can be greatly improved at the expense of a smaller heating load.
作者
赖作通
LAI Zuotong(Maoming Branch of China Petroleum&Chemical Corporation,Maoming 525000,China)
出处
《武汉工程大学学报》
CAS
2024年第4期370-374,381,共6页
Journal of Wuhan Institute of Technology
关键词
三热源热变换器
热布朗马达
供热率
供热系数
生态学函数
性能优化
three-heat-reservoir heat transformer
thermal Brownian motor
heating load
coefficient of performance
ecological function
performance optimization
