Effect of varying ambient conditions on the performance of air conditioner using evaporative cooler
参考中译:环境条件变化对蒸发冷却器空调性能的影响


          

刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
作者：S. K. Gupta（Department of Mechanical Engineering, Delhi Technological University）
B. B. Arora（Department of Mechanical Engineering, Delhi Technological University）
A. Arora（Department of Mechanical Engineering, Delhi Technological University）
刊号：780PC001
ISSN：1678-5878
出版年：2023
年卷期：2023, vol.45, no.12
页码：625-1--625-13
总页数：13
分类号：TH11
关键词：Evaporative cooling；Box-Behnken design；ANOVA；COP；Sustainability index
参考中译：蒸发冷却；Box—Behnken设计；方差分析；COP；可持续性指数
语种：eng
文摘：The increasing usage of refrigeration and air conditioning worldwide is a serious concern as regard the greenhouse gas emissions which degrade the environment. Improving the energy efficiency could reduce this damage. The heat dissipation capacity of the condenser and performance of an air conditioner largely depend upon the temperature of the air entering the condenser. This paper evaluates the performance of a 1.5TR split air conditioner with and without evaporative cooling of condenser. The temperature reduction of the ambient air by evaporative cooling is computed for different weather conditions. The Box-Behnken design (BBD) methodology is applied to predict the interaction of parameters and optimize the results while analysis of variance (ANOVA) provides the fitness and validation of the model. It is observed that the proposed system significantly improves the performance of air conditioner. The maximum COP enhancement (9.37%) is achieved for the ambient temperature drop of 6.7℃ for the optimum operating conditions. The corresponding improvement in the refrigerating effect and savings in work input are obtained as 9.52% and 8.54%, respectively. The proposed system is estimated to pay back within 2.9 years. The sustainability indices indicate the environmental improvement by the proposed system.
参考中译：世界范围内越来越多的制冷和空调使用是一个令人严重关切的问题，因为温室气体排放会破坏环境。提高能源效率可以减少这种损害。冷凝器的散热能力和空调的性能在很大程度上取决于进入冷凝器的空气温度。本文对一台1.5TR型分体式空调机的冷凝器蒸发冷却和不加冷凝器的性能进行了评价。计算了不同天气条件下蒸发冷却对环境空气的降温效果。应用Box-Behnken设计(BBD)方法预测参数间的交互作用并优化结果，而方差分析(ANOVA)提供模型的适合性和有效性。结果表明，该系统显著提高了空调机的性能。在最佳运行条件下，环境温降为6.7℃时，COP提高最大(9.37%)。相应的制冷效果提高了9.52%，节省了工时8.54%。据估计，拟议的系统将在2.9年内收回成本。可持续发展指数表明了该系统对环境的改善。



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