凝汽机组低品位化供热改造及其应用前景

Reconstruction of a Condensing Turbine Unit for Low-grade Heat Supply and Potential Application Prospects

简要分析了供热过程的最低理论燃料单耗问题,详细论述了常规自然对流散热器所决定的采暖供热温度匹配问题及其对策。并依据基于电量的统一性能评价方法,分析计算了凝汽机组低品位化供热改造的性能指标,以及配合高效末端散热器,适应用户末端散热器温度匹配能够取得的节能效果,并从总能系统的角度进行了阐述。还对这种改造的特点及其应用进行了分析。

A brief analysis is conducted of the issue of minimum theoretical specific fuel consumption. Discussed in detail are the issue of the heating and heat supply temperature matching as required by a conventional natural convection radiator and the countermeasures being taken to resolve the issue. Moreover, on the basis of a unified performance evaluation of electrical supply load the performance indexes of the condensing turbine to be reconstructed for low grade heat supply are analyzed and calculated. Also expounded is the energy saving effectiveness derived from the temperature matching of a high efficiency last stage radiator with the last stage radiator of the heat end user. Finally, an exposition from the viewpoint of a total energy system is given and the specific features and implementation of this reconstruction work are analyzed.