摘要
为了冷冻除湿系统更加高效运行,本文对冷冻除湿系统进行模拟计算,定量分析了除湿量与蒸发器进口风速、干球温度、相对湿度之间的关系。结果表明:在一定的进风温度和湿度情况下,随着风速的增大,除湿量先增大后减小;在进口空气的含湿量和风速一定时,随着进口空气干球温度的升高,系统的除湿量逐渐降低;进口空气干球温度在21~36℃,相对湿度在40%~85%之间变化时,进口空气湿球温度与最佳COP下对应的蒸发温度差值约为10℃;最佳制冷工况下的蒸发温度与最大除湿工况下的蒸发温度差值存在线性关系;模型值与实验值相比,误差在±10%以内。
For the efficient operation of the cooling and dehumidification system,the relationship between dehumidification and the inlet air speed,dry bulb temperature,and relative humidity of evaporator is numerically analyzed.The results show that,when inlet air temperature and humidity are kept constant,dehumidification capacity increases first and then decreases with an increase in the inlet air speed.When the moisture content and the speed of the inlet air are constant,the dehumidification capacity gradually decreases with an increase in the dry bulb temperature of the inlet air.When the dry bulb temperature of inlet air is between 21-36℃and its relative humidity is between 40%and 85%,the difference between the wet bulb temperature of inlet air and its evaporation temperature at the optimum COP is about 10℃.There is a nearly linear relationship between the corresponding evaporation temperature at the optimal COP and the evaporation temperature with the maximum dehumidification capacity.After compared with the test data,it shows the error of the numerical model is less than 10%.
作者
刘帅领
马国远
许树学
李富平
孙晗
Liu Shuailing;Ma Guoyuan;Xu Shuxue;Li Fuping;Sun Han(College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China)
出处
《制冷学报》
CAS
CSCD
北大核心
2020年第2期15-21,69,共8页
Journal of Refrigeration
基金
国家重点研发计划(2018YFF0212404)
国家自然科学基金(51776004)资助项目。
关键词
除湿量
模拟
蒸发器
线性关系
dehumidification capacity
simulation
evaporator
linear relationship
