防护工程蒸发冷凝式冷水机组运行特性的实验研究

本文分析了蒸发式冷凝器在防护工程中应用的可行性,搭建了防护工程蒸发冷凝式冷水机组模拟实验台,研究风量和喷淋水密度对其传热传质性能的影响。结果表明:当喷淋密度恒定时,随着风量的减小,蒸发冷凝式冷水机组制冷量和排热量基本不变,单位风量排热量和总功耗增加,ECR降低;在不同风量下,制冷量、压缩机功耗和ECR随喷淋密度的变化规律相同;实验台最佳风量和最佳喷淋密度分别为2 000 m~3/h和0.025 kg/(m·s)。

Experimental Research on Operating Performance of Evaporative Condensing Chiller in Protective Engineering

In this paper, the application feasibility of evaporative condenser in protective engineering is analyzed. The influence of air volume and water spraying density on heat and mass transfer performance was investigated in the experimental platform designed by the authors. It is found that refrigerating capacity and heat transfer capacity were almost unchanged, heat transfer capacity of unit air volume and total consumption were increased, and ECR was reduced, with the decrease of the air volume when spraying density was constant. Refrigerating capacity, energy consumption of compressor and ECR were changed in the same way with the spraying density under different air volume. The best air volume and spraying density are 2000 m3/h and 0.025 kg/(m?s).