基于深圳市全年湿球温度变化的冷水机组能耗优化计算研究

Energy consumption optimal calculation of chillers based on annual wet bulb temperature changes in Shenzhen

区域供冷站进行能耗计算时,一般以100%、75%、50%和25%这4种典型工况的运行策略和其持续时间作为计算依据,但是4种典型工况日和持续时间内的湿球温度变化不一致会导致计算的偏差。通过统计深圳地区湿球温度全年的变化规律及变频冷水机组运行特性,给出了基于湿球温度变化的典型工况分界点的原则及特征湿球温度的计算方法,从而有利于较为准确地计算出区域供冷站全年运行能耗。

When calculating the energy consumption of district cooling stations,the operation strategies and durations of the four typical working conditions of 100%,75%,50%and 25%are generally used as the calculation basis.However,the wet bulb temperature changes in the four typical working condition days and durations are inconsistent,which will lead to deviations in the calculation.Based on the statistics of annual wet bulb temperature changes in Shenzhen and operating characteristics of frequency conversion chillers,presents the principle of the boundary point of typical working conditions based on wet bulb temperature changes and the calculation method of characteristic wet bulb temperature,so as to calculate the annual operating energy consumption of district cooling station more accurately.