Research and application of phase change energy storage technology in coal mine heating system
In response to the problems of high investment,low thermal efficiency,high carbon emissions,and serious environmental pol-lution caused by traditional heating methods including coal,oil,and gas furnaces,in order to implement national dual carbon policy,principles of phase change energy storage and valley peak staggered electrical energy storage were adopted to study the factors affecting the thermal storage density,volume change,thermal conductivity,and thermal conductivity of phase change materials.Inorganic hydrated eutectic salt phase change materials with high solid-liquid phase change latent heat were selected,HDPE(high density polyethylene material)and PP(polypropylene material)were used to encapsulate the phase change materials into spheres,improving thermal effi-ciency.According to the research results,according to the heating requirements of Shanxi Zhengsheng Coal Industry Group and com-bined with the actual distribution of heating areas in the mine,a heating scheme was designed,the heating load was calculated,heating equipment was selected,and an automatic control system was configured to solve the problem of providing green and clean energy heat-ing for phase change energy storage technology in harsh cold areas and coal mine production conditions.This provides a successful case and reference for the heating of phase change energy storage technology in areas with severe cold,high cold,and limited conditions,and has promotional significance.Phase change energy storage technology reduces carbon emissions caused by energy waste by storing excess energy and releasing it when needed.By utilizing valley peak staggered periods to store electricity with relatively low unit energy prices,it can stabilize grid loads,reduce the burden on the power system,further reduce energy consumption and carbon emissions,and respond to the national dual carbon policy.It has good economic and social benefits.
phase change energy storagephase change materialsdual carbon policyvalley peak timingheating
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