一种冷水机组季节性能评价新指标与多台机组联合运行性能评价

New evaluating index for seasonal performance and performance evaluation for multiple chillers combined operation

综合部分负荷性能系数IPLV是评价冷水机组季节运行性能的重要指标,但在对其合理性的评价上存在诸多争议。从季节性能评价指标的物理本质出发,构建了描述单台冷水机组性能的季节部分负荷性能系数SPLV指标;基于SPLV的评价思想,提出了描述多台冷水机组联合运行时的季节部分负荷性能系数SPLV(N)的计算方法和测试工况,并应用SPLV(N)对不同类型冷水机组进行了性能评价。结果表明,所构建的SPLV指标可以更为真实地反映冷水机组的季节运行性能;SPLV(N)的大小与冷水机组的性能曲线形状有很大关系,不同类型的机组各有其适宜的应用形式。

Integrated part load value （IPLV） is an important index to evaluate the seasonal performance of chillers. However, there are still some disputes over the rationality of IPLV. According to the physical nature of the index, puts forward a new index, seasonal part load value （SPLV） for evaluating seasonal performance of a single chiller. Based on the evaluating idea of SPLV, presents a method for calculating the seasonal part load value SPLV（N） of multiple chillers combined operation and its work condition. Evaluates different kinds of chillers with SPLV（N）. The result shows that SPLV can better reflect the true season operation performance of chillers; the value of SPLV（N） has a close relationship with the performance curve of the chillers and different kinds of chillers have their suitable application modes.