Optimization of ecological performance of three-heat-reservoir thermal Brownian heat transformer
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.
three-heat-reservoir heat transformerthermal Brownian motorheating loadcoefficient of performanceecological functionperformance optimization
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