摘要
对冷凝器和蒸发器内所含制冷剂量的计算是空调系统充注量计算的关键,而冷凝器和蒸发器内的制冷工质又主要以气液两相状态存在,因此两相区内的制冷剂质量的计算需要选择合适的空泡系数模型。本文以Harms模型计算两相区内的空泡系数,并在Harms模型的基础上对冷凝器和蒸发器内所含制冷剂量进行了计算和分析。结果表明,家用空调系统内的充注量主要分布在冷凝器和蒸发器内。
The calculation of refrigerant charge inventory in condenser and evaporator is the key of the calculation of charge inventory in an air-conditioning system. The refrigerant working material in condenser and evaporator mainly exists in gas and liquid two-phase states. Therefore, it is necessary to use reasonable void fraction model for the calculation of refrigerant mass in two-phase fluid region. The void fraction in two-phase fluid region was calculated by Harms model in this paper, and the refrigerant charge inventory in condenser and evaporator were calculated and analyzed based on Harms model. The results show that refrigerant charge inventory in an air-conditioning system is mainly distributed in condenser and evaporator.
出处
《建筑热能通风空调》
2008年第5期39-41,共3页
Building Energy & Environment
关键词
空调换热器
Harms模型
空泡系数
充注量
air-conditioning heat exchanger
Harms model
void fraction
charge inventory
