摘要
以名义制冷量为40kW的机房专用空调为对象,研究被控温度24℃、相对湿度50%,冷凝器进风温度-5-35℃条件下的机房空调性能。用焓差实验室测试空调机在不同冷凝温度条件下的性能参数,从而分析系统各部件的匹配关系、整机性能及在变冷凝温度下的综合性能。实验结果表明,调整蒸发器结构、增加风速、合理匹配热量膨胀阀,降低系统部件和管道阻力等,能使机房空调机在标准制冷工况下COP、变工况下COP以及综合COP都有较大幅度提高。
Performance of room air conditioner which is under temperature 24℃, 50% RH and air inlet temperature -5 - 35℃ was studied based on nominal refrigeration capacity 40kW. Tested performance parameters under different condensing temperature on air - enthalpy test lab, analyzed matching regulations and performance of each parts of conditioner under varietal condensing temperature. It showed that adjusting structure of evaporator, raising air flow speed, regulating the optical work opening span of thermostatic expansion valve, reducing resistance of parts and pipelines may heighten conditioner COP under various conditions.
出处
《低温与超导》
CAS
CSCD
北大核心
2009年第11期66-69,78,共5页
Cryogenics and Superconductivity
关键词
机房专用空调
性能参数
匹配
Room air conditioner
Performance parameters
Matching
