Energy Efficiency Analysis Of Heat Source Equipment In Heating Transformation

Energy shortage and environmental pollution have become a global problem,all countries have actively responded,and our country has also implemented energy-saving and emission reduction strategies from various aspects.In view of the problems of low utilization efficiency and serious pollutant emission in the process of coal-fired heating in northern China,the government put forward the clean energy heating renovation projects such as "Coal to Electricity" and "Coal to Gas" and gave various policy support to the renovation project.At present,the equipment forms used in the transformation are various,and the publicity of the energy-saving effect is inevitably exaggerated,which makes it difficult to choose when the transformation is carried out.In this paper,the energy efficiency and rationality of three types of electric heating equipment,which are recommended by the government to replace coal-fired heating,are analyzed and calculated by the energy analysis method,the exergy analysis method and the energy level balance coefficient.The energy saving potential of electric heating equipment replacing coal-fired heating equipment is analyzed in order to provide theoretical guidance for scientific and reasonable choice of transformation mode.This paper compares three kinds of common electric heating methods in "Coal to Electricity" and two kinds of original coal-fired heating methods,and draws the following conclusions: From energy analysis,the energy efficiency of air-source heat pump is obviously superior to that of the original coal-fired heating,but there is no advantage in direct and regenerative electric heating equipment;From the perspective of exergy analysis,the air source heat pump energy utilization efficiency is slightly higher than coal-fired heating,but the direct type and regenerative heating equipment than coal-fired heating.By testing the heating effect of the air source heat pump system used in a project,the correctness of the above conclusion is also proved.This has pointed out the direction to carry on the heating reform correctly in the future,has the practice instruction significance.