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首页> 外文期刊>Energy Conversion & Management >One-dimensional, transient modeling of a fixed-bed regenerator as a replacement for recuperators in supercritical CO_2 power cycles
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One-dimensional, transient modeling of a fixed-bed regenerator as a replacement for recuperators in supercritical CO_2 power cycles

机译：固定床再生器的一维瞬态建模作为超临界CO_2电源循环中恢复器的替代品

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摘要

Fixed-bed regenerators may be a low cost alternative to recuperators for supercritical CO2 power cycles. However, the transient nature of regenerators operating in sCO(2) power cycles has not been previously characterized. This study details a one-dimensional, transient model of a fixed-bed regenerator that captures phenomena such as local fluid properties and heat transfer coefficients, entrained fluid heat capacity, and the effects of conservation of mass during process switching. The model is validated with experimental results of a 10 kWth regenerator. This comparison shows that the model predicts temperature as a function of both time and space exceptionally well. The model predicts effectiveness, heat transfer, and discharge temperatures within 5%, and predicts pressure drop and fluid carryover within 10%. This model could be used in future studies to simulate regenerators within a supercritical CO2 power cycle.
机译：固定床再生器可以是用于超临界CO2功率循环的恢复器的低成本替代物。然而，在SCO（2）电源循环中操作的再生器的瞬态性质尚未表征。该研究细节了一种固定床再生器的一维瞬态模型，其捕获诸如局部流体性质和传热系数，夹带流体热容量的现象，以及在工艺切换过程中储存质量的效果。该模型验证了10 kWth再生器的实验结果。该比较表明，该模型预测温度，作为时间和空间的函数非常好。该模型预测5％以内的有效性，传热和放电温度，并预测10％的压降和液体携带。该模型可用于未来的研究，以模拟超临界CO2电源循环内的再生器。

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