考虑能级特性的冷电联供系统能源利用率评价分析

Applicability Analysis on Primary Energy Rate Index for Evaluating CCHP System on Refuel conditioning

微型燃气轮机冷热电联供系统的科学评价问题是系统发展的前提和基础,一次能源利用率评价指标在其使用过程中如果忽略其适用性和使用条件,常常会导致产生一些有悖于客观实际的分析结果,从而不能对能量供应系统作出科学正确的评价;文章结合微型燃气轮机冷热电联供系统,对其在补燃工况下的一次能源利用率进行了分析计算,指出了一次能源利用率在评价具有补燃工况的联供系统时,存在随补燃率变化而出现不确定性的变化规律,并进一步分析了出现该规律的原因,指出其适用性和局限性,并利用系统输出和输入的能级概念结合一次能源利用率对系统的能量利用进行了评价分析,获得了更为科学合理的评价分析结果,为客观评价能量利用系统提供了必要的理论支持。

How to use the PER（primary energy rate）index correctly is an important factor for evaluating the CCHP system rationally. However many people pay no attention to its applicability and some error or illogical results are derived from the calculating analysis. On the base of introducing the evaluating index of primary energy rate the energy consuming speciality for CCHP system is analyzed and the primary energy consuming rate of different refuel conditionings is calculated and some conclusions are derived from the analyzing. By comparing the energy consuming rate of different refuel conditions the develop laws of consuming energy rate for CCHP system are found out and its irrationality is analyzed and pointed out. On the base of the energy level for CCHP system the new evaluating means of combined the energy level with the primary energy rate are proposed and some rational results of analyzing are derived. All these results are benefit for evaluating correctly the CCHP system.