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首页> 外文期刊>International Journal of Refrigeration >A cost-based method for comparing alternative refrigerants applied to R-22 systems
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A cost-based method for comparing alternative refrigerants applied to R-22 systems

机译：一种基于成本的方法，用于比较应用于R-22系统的替代制冷剂

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This paper describes the development and application of a general purpose method for comparing alternative refrigerants. The method utilizes a single performance index based upon minimum cost for a simplified system operating with a given coolingcapacity and efficiency. The cost-based method is an improvement over other methods for evaluating refrigerants in that it more appropriately considers the influence of both thermodynamic and transport properties on refrigerant choice and it allowsconsideration of additional costs associated with some replacements (e.g. safety features for flammable refrigerants). A computer model based upon this method was used to evaluate the performance of several leading R-22 replacement candidates for windowair conditioners. Primarily, the cost differences between alternative refrigerants are associated with the heat exchangers and the refrigerant/oil requirements. The cost differences associated with different compressor displacement requirements were found to have a minor influence on overall cost differences. For the optimized systems, all of the alternatives bad system costs that were within about 4% of those for R-22. Further, the differences between most of the alternative refrigerants were smaller than the uncertainties in the analysis.
机译：本文介绍了用于比较替代制冷剂的通用方法的开发和应用。该方法利用基于最小成本的单一性能指标，以简化的系统以给定的冷却能力和效率运行。基于成本的方法是对其他评估制冷剂的方法的改进，因为它更适当地考虑了热力学和运输特性对制冷剂选择的影响，并且允许考虑与某些替代品相关的额外成本（例如易燃制冷剂的安全性）。基于此方法的计算机模型用于评估几种用于窗式空调的领先R-22替代候选产品的性能。首先，替代制冷剂之间的成本差异与热交换器和制冷剂/油的需求有关。发现与不同压缩机排量要求相关的成本差异对总体成本差异影响较小。对于优化的系统，所有替代品的系统成本都在R-22的4％之内。此外，大多数替代制冷剂之间的差异小于分析中的不确定性。

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