Application and Improvement of the Heat Balance Method in Flow and Heat Transfer Experiments within S-CO2 Flow Channels
In order to solve the problem of calculation errors in the inner wall temperature due to uneven circumferential temperature distribution in S-CO2 horizontal tube during flow and heat transfer experi-ments,the original thermal balance method has been improved.The internal heat source term is calculat-ed based on the volumetric heating rate method,and the temperature of the bottom node is recalculated.The results show that the improved thermal balance method extends the applicability of the original ther-mal balance method,allowing it to be applied to AC electric heating in horizontal tubes.The calculated inner wall temperature is closer to the accurate value.
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