摘要
变径毛细管在正向流动和反向流动时其制冷剂流量特性不同,因而可以作为节流元件代替现有冷暖空调器中使用的毛细管组件。为实现这一目的,利用制冷剂流量试验台,先测定原毛细管组件制冷、制热时的制冷剂流量特性,然后通过调整变径毛细管规格尺寸,使变径毛细管制冷、制热时的流量特性与原毛细管组件基本一致,再安装在空调器整机上进行整机性能对比试验。试验表明,在标准工况下,新空调器与原空调器相比,其制冷量减少0.5%,制冷能效比增加0.3%,制热量减少1.1%,制热性能系数增加1.4%。因此可以得出,变径毛细管经过精确匹配,完全可以作为节流元件代替现有冷暖空调器中使用的毛细管组件。
The refrigerant flow characteristics of variable diameter capillary in forward flow and reverse flow are different. It canbe used as a throttle device instead of the capillary module in heat pump air-conditioner. To achieve this goal, the refrigerant flow characteristic of the original capillary module for refrigerating and heating circulation was performed in the refrigerant flow experimental facility. The size of variable diameter capillary was adjusted to make its refrigerant flow performance is accordance with that of capillary module. The capability of air conditioner with variable diameter capillary and capillary module were tested respectively in the standard condition. The experimental results show that the performance of air-conditioner with variable diameter capillary compared to that of air conditioner with capillary module, the refrigerating capacity decreased by 0.5%, the energy efficiency ratio（EER） increased by O. 3% , the heating capacity reduced by 1.1%, the coefficient of performance （COP） increased by 1.4%. Hence, the higher flow performances of variable diameter capillary indicate that it can completely used as a throttle device instead of the capillary module in the heat pump air-conditioner after it matched exactly.
出处
《流体机械》
CSCD
北大核心
2013年第4期62-64,6,共4页
Fluid Machinery
基金
广东高校热泵工程技术开发中心建设项目(GCZX-B0906)
顺德区科技计划项目(20120202087)
关键词
变径毛细管
毛细管组件
冷暖空调器
流量特性
variable diameter capillary
capillary module
heat pump air-conditioner
flow characteristic
