Abstract: An optimal analysis based on the rate of profit objective function is carried out on a class of three-heat-source refrigerators working under the operation of the Newton' heat transfer law. The exergoeconomical optimal performance of refrigerator is derived, and the internal relation between it and the ecological optimal performance is revealed. The conclusions obtained here may provide some new theoretical guidance for the manufacture and the optimal design of three-heat-source refrigerators.

Key words: finite-time thermodynamics, three-heat-source refrigerator, exergoeconomical optimal performance, ecological optimal performance