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首页> 外文期刊>Experimental Heat Transfer >FORCED-CONVECTION GAS-TO-WALL HEAT TRANSFER IN A PACKED BED FOR HIGH-TEMPERATURE ENERGY STORAGE
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FORCED-CONVECTION GAS-TO-WALL HEAT TRANSFER IN A PACKED BED FOR HIGH-TEMPERATURE ENERGY STORAGE

机译：袋装床中强制对流气体到壁面的热交换，用于高温储能

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摘要

Measurements of the gas-to-wall forced-convection heat transfer coefficient in a packed-bed, high-temperature, thermal energy storage system were carried out. The maximum temperature attained was 1,000℃. Effects of media property variations with temperature were incorporated along with detailed uncertainty analysis. Results were correlated in terms of Nusselt number, Prandtl number, and Reynolds number. The operating fluid during energy storage was flue gas and air during recovery, making this more applicable to industrial waste recovery and similar systems. Similar studies used air for both storage and recovery and developed correlations from experiments at either room temperature or slightly above. Few associated results with corresponding uncertainty margins. Due to substantial uncertainties associated with the measurements of this heat transfer coefficient, it is significant to note that no firm conclusions can be reached on the validity or otherwise of existing similar correlations for which the uncertainty margins were not reported.
机译：对填充床高温热能存储系统中的气壁强制对流传热系数进行了测量。最高温度为1000℃。介质特性随温度变化的影响以及详细的不确定性分析均纳入其中。结果根据Nusselt数，Prandtl数和Reynolds数相关。能量存储期间的工作流体是回收期间的烟气和空气，这使其更适用于工业废物回收和类似系统。相似的研究使用空气进行存储和回收，并从室温或略高于室温的实验得出相关性。相关结果很少具有相应的不确定性余量。由于与该传热系数的测量相关的重大不确定性，因此值得注意的是，对于尚未报告不确定性裕度的现有类似相关性的有效性或其他方面，无法得出确切结论。

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