干燥气候区高温冷水机组实测与分析——以乌鲁木齐某办公建筑为例
Field test and analysis of high temperature water chillers in dry climate area—Taking an office building in Urumqi as an example
摘要：
结合干燥气候区的特点，对乌鲁木齐某办公建筑空调系统的螺杆式冷水机组进行了现场监测；通过调节冷却塔风机运行台数，改变冷却水温度及冷水温度，分析冷却水、冷水温度对螺杆式冷水机组制冷量、输入功率和性能系数COP的影响。结果表明，干燥气候区冷却水温度的降低使得冷水机组COP大幅度提高，平均单位温升增长率为3.47%。指出了干燥气候区空调系统设计选型应注意的问题和对策。
Abstract：
Combining with the characteristics of dry climate area, monitors the screw water chiller of the air conditioning system on-site for the office building in Urumqi. By regulating the running numbers of cooling tower fans and changing the temperatures of cooling water and chilled water, analyses the effects of cooling and chilled water temperatures on refrigerating capacity, input power and coefficient of performance (COP) of the high temperature screw water chiller. The result shows that along with the decrease of cooling water temperature, the COP of the chiller increases significantly and the average growth rate per unit temperature is 3.47%. Puts forward the problems and countermeasures that should be paid attention to in the designing of HVAC systems in dry climate area.
Keywords:dry climate area, high temperature water chiller, cooling water temperature, office building, coefficient of performance