The Assessment of Temperature-Energy Interaction for Consecutive Discharge Heat Storage Tank Using Composite Solid-Liquid MHSS

Increasing the operational aspect of heat storage system (HSS) contributes to significant positive influence on thermal system.As one fast-developing storage technology, modification of the material HSS (MHSS) has become crucial, specifically for organicbased MHSS.The drawbacks of poor phase transformation during energy intake and release (charging/discharging) of MHSS make undesirable performance for heat exchange and effective operation.To solve the problem, this work proposes modification of pure octadecanoic acid (POA) as MHSS by forming polymeric-embedded OA (PEOA).Evaluation is taken for the heating/cooling cycle operation of the HSS, showing positive contribution of the proposed method.The PEOA reduces the preheating duration by 14.8%, meaning the charging ratio can be improved effectively for the HSS.The effective energy ratio for PEOA is obtained with maximum value of 83.9%, which is higher than the POA with 74.8%.It is accounted for the application of PEOA since it allows a suitable solidification process on the heat release, making the maximum total heat loss drop to 17.9%.The profile observation using microscope electron demonstrates the stable formation of PEOA as a direct result of the presence of polymer structure of the composite.The result demonstrates the improvement in the operation of HSS unit, which is linked to the stabilized material, achieving a favorable energy ratio that potentially promotes better operation and control of HSS unit.Moreover, a consecutive discharge cycle for the heat storage tank (HST) using PEOA also brings positive outcomes and improves the heat discharge stage.