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구 캡슐을 충진한 잠열 에너지 저장시스템의 실험적 연구 = Experimental Study of Latent Heat Thermal Energy Storage System Unit Packed with Spherical Capsule

서명/저자: 구 캡슐을 충진한 잠열 에너지 저장시스템의 실험적 연구 = Experimental Study of Latent Heat Thermal Energy Storage System Unit Packed with Spherical Capsule / 문종훈

초록/해제: 요약 :An experimental on the transient thermal performance of latent heat thermal energy storage(LHTES) unit employing spherical capsules was carried out. The LHTES system has been considered to be very promising in improving the coefficient of performance(COP) of energy systems because various heat sources including solar thermal, wind, sky radiation cooling, underground thermal and waste energies can be efficiently stored with them. The present paper mainly reports the results of experiments on the charging(melting) thermal performance of the LHTES unit packed with spherical capsules containing n-octadecane up as the phase change materials(PCM). The overall response of this LHTES unit was examined while varying the capsule diameter, the flow rate of the heat transfer fluid, the inlet temperature, and the size of the storage unit. Furthermore, a comparison of the thermal performance between the charging and discharging(solidification) process has been made. The spherical capsule type LHTES unit has several advantage e.g. high transfer rate and ease of installing into existing reservoirs. The present data can be rigorously utilized for designing the efficient LHTES systems. The experimental results will also compared with theory.