衡量结霜时间的指标——湿温比  

The Criterion of Duration of Frosting-Humidity-Temperature Ratio

作　　者：何志龙[1] 黄东[1] 袁秀玲[1] 

机构地区：[1]西安交通大学能动学院

出　　处：《流体机械》2000年第7期55-57,共3页Fluid Machinery

摘　　要：通过对风冷冷热水机组制热时空气流过盘管状态的分析 ,提出了湿温比的概念 ,从而使用量化的方法对容易结霜的温度和湿度范围作出了定义 ,并在此基础上对现有的时间—温度除霜控制模式作出了改进 ,提出了根据气候条件对两次除霜之间的时间动态设置的新概念。The change of air states at inlet and outlet of the outdoor coils in the air-to-water heat pump is analysed. The concept of humidity-temperature ratio is defined. By the humidity-temperature ratio the paper gets the ranges of temperature and relative humidity at which the frost take few minutes to fill with outdoor coils. The paper improves the defrost controll programme of time-temperature by dynamic setting of the interval of two defrost cycles according to climate.

关 键 词：结霜时间 湿温比 除霜 风汽冷热水机组 

分 类 号：TB65[一般工业技术—制冷工程]