Experimental Investigation of Combined Sensible and Latent Heat Storage System using Iron Scrap and PCM

摘要

Energy plays a major role in the economic prosperity and the technological competitiveness of a nation. Developing energy technologies should ensure energy security, efficiency and environmental quality. At present more than 80% of the world energy is obtained by the combustion of fossil fuels such as coal, oil and natural gas. The energy demand varies on daily, weekly and seasonal basis in the commercial, industrial and utility sectors. Energy storage units can be used with energy management systems in commercial and industrial sectors to reduce the energy consumptions by using waste heat or alternative energy sources. The main advantage of PCM is the ability to store large amounts of energy compared to conventional storage. Thermal energy storage (TES) plays the main role in energy conservation and it has a significant impact on modern technologies. TES appears to be most appropriate technology for correcting the mismatch heat occurs between the supply and demand of energy. TES is the temporary storage of high or low-temp energy for feature use. In the present study, experiments are conducted on a PCM based packed bed, to study the charging behavior of the storage system. It is found that the total heat capacity of TES tank at 700C is around 10,400 KJ. The output hot water at an Average of 450C is around 64 liters so it means the heat energy recovered from the TES tank is around 32%. The system with Iron scrap + PCM filled in Spherical capsules able to give 25% of hot water Extra then the Same Capacity sensible heat storage system.