热力发电2023，Vol.52Issue(11)：37-45,9.DOI:10.19666/j.rlfd.202301004
螺旋管内超临界二氧化碳换热性能的模拟和试验研究
Simulation and experimental research on heat exchange performance of supercritical CO2 in helical tube
摘要
Abstract
Numerical and experimental studies are conducted on convective heat transfer performance of carbon dioxide(S-CO2)flowing in a heated vertical helically coiled tube under supercritical pressure.The influence of flow characteristics and structural characteristics such as heat flux q,mass flow rate G,pitch P,tube inner diameter d,and spiral radius R on heat transfer are discussed,and the sensitivity of each structural parameter is studied quantitatively.A closed-loop S-CO2 test platform was built to conduct experimental research on the convective heat transfer performance of S-CO2 in the helically coiled tube,and the accuracy of the numerical simulation is verified based on the experimental data.Finally,the heat transfer correlation of S-CO2 is fitted.The research has laid foundation for the thermal design method of S-CO2 spiral-wound heat exchanger,and has certain engineering application value for the application and promotion of the spiral-wound S-CO2 heat exchangers in nuclear power and solar thermal power generations.关键词
螺旋管式换热器/超临界二氧化碳布雷顿循环/换热性能/数值模拟Key words
spiral-wound heat exchanger/supercritical carbon dioxide Brayton cycle/heat transfer performance/numerical simulation引用本文复制引用
夏春杰,宋嘉梁,陈永东,吴晓红..螺旋管内超临界二氧化碳换热性能的模拟和试验研究[J].热力发电,2023,52(11):37-45,9.基金项目
安徽省自然科学基金面上项目(2008085ME152)Anhui Provincial Natural Science Foundation General Project(2008085ME152) （2008085ME152）
