Solar Rankine Cycle System with Steam Accumulator of High Temperature Latent Heat Thermal Energy Storage Type

摘要

Since fossil fuel like petroleum, coal, and natural gases will sooner or later run out in this century, natural energy like solar, wind, and biomass will rise as one of alterative energy sources.Most of the conventional solar thermal electric systems utilize high-temperature difference. In the present paper, an advanced solar energy conversion system with CPC (Compound Parabolic Concentrator) collector and steam accumulator of phase-change type was newly proposed. The phase-change steam accumulator with high temperature phase change material (PCM) is designed and evaluated both experimentally and theoretically. The present steam accumulator has twice as better performance as the conventional sensible heat accumulator.