Abstract

The cascades phase change heat storage (CLTES) and trans-critical CO2 Rankine cycle were combined to study the effects of the number of phase change materials in series on heat storage on the performance of waste heat recovery systems in order to overcome the influence of heat source volatility. In terms of net work, 3-CLTES is 12.5% higher than 2-CLTES, but with 30.4% more heat exchange area. Compared with 4-CLTES, the net output work decreased by 2.6%, and the heat transfer area increased by 6.7%.

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