冷水机组季节性能评价新指标SPLV和IPLV的比较
Comparison between SPLV and IPLV for evaluating water chiller performance
摘要：
基于“性能指标应等于季节总制冷量与总耗电量之比”的物理意义提出了季节部分负荷性能系数SPLV新指标。就SPLV和IPLV的公式形式、指标大小以及在典型性能曲线中的应用三个方面对二者的区别与联系进行分析，得出结论：SPLV与IPLV采用相同的构成要素，但二者的公式形式和量纲不同；对同一机组而言，IPLV≥SPLV，且各部分负荷工况点的性能系数COPc差别越大，其IPLV相对SPLV偏差也越大。
Abstract：
Puts forward a new index-seasonal part-load value (SPLV) based on the physical meaning that the performance index should be equal to the ratio of total seasonal cooling capacity to total power consumption. Analyses the differences and relation in respects of the formula form, index value and application of SPLV and IPLV to the typical characteristic curves. Concludes that SPLV and IPLV adopt the same constituent elements with different formula form and dimension. For the same chiller unit, IPLV is greater than or equal to SPLV, and the larger the difference among COPc of part-load working condition points is, the greater the deviation between IPLV and SPLV is.
Keywords:water chiller, integrated part-load value (IPLV), seasonal part-load value (SPLV), comparison, calculation formula