大量测试数据表明，在现行地铁环控系统中，冷机大部分时间处于部分负荷状态，因此用于评判地铁站 冷水机组部分负荷综合性能的 IPLV 值的计算方法值得研究。使用了一种逐时计算地铁车站负荷的方法，计算得 出北京市、上海市、广州市典型地铁标准站全年的逐时负荷曲线。根据全年逐时负荷曲线统计了 3 个城市地铁车 站不同负荷率区间占比情况，从而得出地铁车站水冷空调机组 IPLV 的计算办法。计算结果显示，地铁站空调季 部分负荷情况占比很高，低于 25%负荷率的情况占空调季运行时间的接近 1/3，低于 50%负荷率占比超过运行时 间的 50%。考虑到地铁车站通常设立两台冷水机组的情况，对使用两台机组的情况进行了讨论，使用两台冷水机 组的情况下，低于 25%负荷率的情况变为 15%，但是还是高于团体标准值 1.5%；50%以上负荷率区间从 40%增 加到 77%，与团体标准值接近。研究结果对于地铁空调系统设备选型和运行节能具有一定的指导价值。

Chillers in the current subway environment control system are under partial load most of the time from a large amount of test data. This study aims to revise the formula of the integrated part load value (IPLV) used to judge the comprehensive performance of a subway station chiller under partial load. This study used a method of calculating hourly the load of subway stations throughout the year to obtain the hourly load curves in Beijing, Shanghai, and Guangzhou. The load rate sections in the three cities were counted from the load duration curve. The results show that partial load accounts for a high proportion of the subway station air-conditioning season. A load rate below 25% accounts for nearly 1/3 of the operating time, and a load rate below 50% accounts for more than 50%. If two chillers are used, the proportion of low load rate decreases, but is still higher than the group standard value. The results are instructive for subway air-conditioning system equipment selection and energy saving.

U231

“十三五”国家重点研发计划课题(2018YFC0705006)