环境温湿度对陈列柜制冷系统运行特性影响的实验

Experiments on the effect of ambient temperature and relative humidity on the running characteristics of the display case refrigeration system

实验研究了环境温湿度对内藏机组的立式敞开式冷藏陈列柜制冷系统运行性能的影响。实验测试表明,环境温度每升高1℃,柜制冷系统的冷凝温度将上升1.2℃,蒸发温度将上升0.7℃,机组功率消耗将增加2%;同样,环境相对湿度每升高10%,制冷系统的冷凝温度将上升0.9℃,蒸发温度将上升1.3℃,机组功率消耗将增加2.25%。当环境温湿度从25℃、40%上升到30℃、90%时,系统冷凝温度升高11.0℃,蒸发温度升高10.1℃,机组功率消耗增加21%。因而,维持较低的温湿度环境工况,可使柜运行性能稳定,并使机组功率消耗减少,达到节能的目的。

The effect of ambient temperature and relative humidity on the running characteristics of the refrigerated vertical open display case system with internal located refrigeration unit was investigated experimentally. The tests show that, with an increase in temperature of 1 ℃, the condensing temperature of the cabinet refrigeration system increased by 1.2 ℃, the evaporating temperature increased by 0.7 ℃, and the power consumption of the unit increased by 2% respectively. Likewise, when the ambient relative humidity increased by 10%, the condensing temperature increased by 0.9 ℃, the evaporating temperature increased by 1.3℃and the power consumption increased by 2.25%. When the ambient temperature and relative humidity changed from 25℃ , 40% to 30 ℃, 90% , 11.0 ℃, the evaporating temperature increased by 10.1 ℃Therefore, maintaining lower ambient temperature and reduce the power consumption of the unit so as to attain the systemt condensing temperature increased by , and the power consumption increased by 21%. relative humidity can keep steady performance and the objective of saving energy.