Research On Design And Evaluation Of Micro Compressed AirEnergy Storage CCHP System

With the increasing consumption of traditional energy sources such as fossil energy and the increasingly severe environmental problems,the transformation and development of energy has become a common consensus and demand in various countries,and new energy technologies have been rapidly developed.However,new energy sources such as solar energy and wind energy have strong intermittentness,randomness and volatility,which pose new challenges to the energy storage link in the energy supply system.At the same time,with the continuous development of high-efficiency energy consumption schemes such as microgrid and combined heat and power,energy storage has been increasingly excavated and caused functions such as improving energy supply quality,improving energy comprehensive utilization rate,and enhancing system energy management capabilities.extensive attention.Among many energy storage methods,compressed air energy storage has the advantages of large capacity,long life,and low emissions.The small compressed air energy storage system is free of site constraints,the system structure is more flexible,and the application methods are more diverse.This paper makes full use of the natural cold-heat-electricity interface of the compressed air energy storage system,and conducts research work on the design and evaluation of the micro-compressed air energy storage cold-heat power-generation system.The main research contents include:Based on an overview and analysis of the research status and development trends of domestic and foreign compressed air energy storage cooling and heating cogeneration systems,from the perspective of energy cascade utilization,a new compressed air energy storage cooling and heating cogeneration system new structure was designed.According to the multi-energy flow coupling characteristics of the system,the difference in energy supply grades and the operating requirements of wide operating conditions,the key components parameters such as the cold and hot electrical interface of the compressed air energy storage system were reasonably designed and calculated.The evaluation method of the micro-compressed air energy storage cooling and heating combined power supply system based on exergy and exergy cost analysis is given,and the energy efficiency characteristics and economy of its wide operating conditions are systematically evaluated.Finally,select monitoring points,sensors and PLC selection,and build a labview-based system monitoring software,including compression,expansion,heating enthalpy increase,energy flow and system evaluation and other functional interfaces.It provides a theoretical and practical basis for the design and evaluation of the micro-compressed air energy storage cooling and heating power supply system.