典型集中供热系统能源利用分析
Energy utilization analysis of typical central heating systems
摘要：
为分析集中供热系统及各环节的能源利用状况，采用能分析和火用分析方法建立了供热系统能分析及火用分析模型，对集中供热系统进行了热力学分析，并以天津某供热系统热源厂为例采用能分析和火用分析方法进行了计算。结果表明：第一、第二热源厂的热效率分别为32.56%，57.03%，火用效率分别为7.77%，13.88%，该集中供热系统对能的数量利用效果一般，能质利用效果较差，具有较大节能潜力。
Abstract：
In order to evaluate the overall energy utilization conditions of central heating systems, performs the thermodynamics analysis of central heating systems by establishing energy and exergy analysis models of heating systems using energy and exergy analysis methods, and calculates the thermal performance of heat source plant of a heating system in Tianjin. The results show that the energy efficiencies of the first and second heat source plant are 32.56% and 57.03% respectively, and the exergy efficiencies are 7.77% and 13.88% respectively. The energy efficiency of the heating system is low, and the exergy efficiency is worse, which has a large potential for energy saving.
Keywords:central heating system, energy analysis, exergy analysis, energy efficiency, exergy efficiency