Jiangfeng Guo1,2,3,*, Hongjie Yu1
Frontiers in Heat and Mass Transfer, Vol.22, No.6, pp. 1575-1595, 2024, DOI:10.32604/fhmt.2024.058179
- 19 December 2024
Abstract Based on the first and second laws of thermodynamics, the heat transfer and flow (thermohydraulic) characteristics of horizontal supercritical pressure CO2 (S-CO2) in a circular pipe under heating conditions were investigated numerically. Heating flows in two different diameters (d) of 4 and 6 mm were simulated in pipes with pressures of 8 MPa, mass fluxes (G) of 300 and 400 kg/(m2·s), and heat fluxes (q) of 50, 75 and 100 kW/m2. In the d = 4 mm pipe, the peak heat transfer coefficient (hb) was about 3 times higher than in the d = 6 mm pipe, while the entropy… More >
Graphic Abstract
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