Study On The Establishment Of Evaluation System On Electric Boiler Water Heat Storage System Using Heat Source Index

In order to content the people need and actively respond to China’s strategies of energy conservation and emission reduction and peak valley electricity price,the heating industry began to explore the development path of using electric energy as heating energy.At present,the electric boiler water heat storage and heating system has developed rapidly with the advantages of stable heat storage,mature technology,high cost performance and safety.However,due to its complex operation process,the impact of various parameters on the system performance is difficult to grasp,and China has not formulated relevant test specifications and application standards,so the research on the evaluation system of electric boiler water heat storage and heating system is particularly important.Combined with the actual project,this thesis systematically analyzes the operation principle of the electric boiler water heat storage and heating system,focuses on the heat storage characteristics in the process of atmospheric water insulation and the changes with the influencing parameters,and establishes a comprehensive evaluation system which is used to evaluate the electric boiler water heat storage and heating system with the heat source as the evaluation index.According to the development of electric boiler water heat storage and heating system in China at the current stage,the three evaluation indexes of heat preparation,heat conversion and heat matching are determined,and the three first-class indexes are carefully divided.Finally,a total of eleven second-class evaluation indexes are divided,such as the thermal efficiency of electric boiler,the heat storage density,the heating time,the heat utilization rate,the thermal stratification characteristics,etc.In this thesis,using the analytic hierarchy process to judge the weight relationship of each evaluation index,and a relatively reasonable weight value was derived.Taking an electric boiler water storage heating system in Zhangjiakou City as a specific evaluation object,establishing the performance evaluation level of this electric boiler water storage heating system using fuzzy synthetic evaluation.Based on the evaluation results of the system,targeted optimization suggestions were given.