The Ecological Optimal Performances of an Irreversible Four-Heat-Source Refrigerator

Abstract:

Using finite-time thermodynamics, optimal analysis on a class of four-heat-source refrigerator for Newton’ heat transfer law is done based on the ecological objective function. The ecological optimal performances of refrigerator are derived. An ecological optimization criterion is proposed for the best mode of operation of the refrigerators, which consists of maximizing a function representing the best compromise between the cooling rate and entropy production rate. We investigate the ecological optimization performance and derive the optimal cooling rate, coefficient of performance and entropy production rate for the refrigerators. Moreover, there are some advantages in using the ecological optimization criterion; it is especially beneficial for determining the reason able use of energy and protecting the ecological environment. The conclusions obtained here are of importance in the optimal design and reasonable use of the energy of real four-heat-source refrigerators, such as absorption refrigerators, adsorption refrigerators, and so on.

• Periodical: Advanced Materials Research (Volumes 1008-1009)
• Pages: 1101-1105
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1008-1009.1101
• Online since: August 2014
• Authors: Li Ya Xu*
• Keywords: Ecological Optimal Performance, Finite-Time Thermodynamics, Four-Heat-Source Refrigerator

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