TY - GEN
T1 - Parametric Effects of a Heat Transfer System using Supercritical Carbon Dioxide as Working Fluid
AU - Wang, Lei
AU - Pan, Yu Cheng
AU - Lee, Jin Der
AU - Chen, Shao Wen
AU - Fu, Ben Ran
AU - Pan, Chin
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This study experimentally explores the parametric effects on the heat transfer efficiency and pressure drop of supercritical CO2 tested in a horizontal circular heating tube having an inner diameter of 1.0 mm and a length of 170 mm. The experimental results illustrate that the working condition with a longer region after the pseudocritical point will generally deteriorate the heat transfer in the tube. The parametric effect of mass flux can improve the heat transfer efficiency, while the parametric effects of system pressure and inlet fluid temperature can reduce the heat transfer efficiency. The effect of heat flux on the heat transfer efficiency would depend on the outlet flow condition. The optimal heat flux with a highest heat transfer efficiency of about 91.38% occurs in the flow state at tube outlet around the pseudocritical point. Moreover, the measured pressure drops are in the order of several kPa, which could neglect their effects on the local flow properties. The increase of heat flux, inlet fluid temperature and mass flux all tend to enlarge the pressure drop of the heating tube, while the increase of system pressure will lower the tube pressure drop.
AB - This study experimentally explores the parametric effects on the heat transfer efficiency and pressure drop of supercritical CO2 tested in a horizontal circular heating tube having an inner diameter of 1.0 mm and a length of 170 mm. The experimental results illustrate that the working condition with a longer region after the pseudocritical point will generally deteriorate the heat transfer in the tube. The parametric effect of mass flux can improve the heat transfer efficiency, while the parametric effects of system pressure and inlet fluid temperature can reduce the heat transfer efficiency. The effect of heat flux on the heat transfer efficiency would depend on the outlet flow condition. The optimal heat flux with a highest heat transfer efficiency of about 91.38% occurs in the flow state at tube outlet around the pseudocritical point. Moreover, the measured pressure drops are in the order of several kPa, which could neglect their effects on the local flow properties. The increase of heat flux, inlet fluid temperature and mass flux all tend to enlarge the pressure drop of the heating tube, while the increase of system pressure will lower the tube pressure drop.
KW - heat transfer efficiency
KW - pressure drop
KW - supercritical carbon dioxide
UR - http://www.scopus.com/inward/record.url?scp=85199076319&partnerID=8YFLogxK
U2 - 10.1109/GPECOM61896.2024.10582625
DO - 10.1109/GPECOM61896.2024.10582625
M3 - Conference contribution
AN - SCOPUS:85199076319
T3 - Proceedings - 2024 IEEE 6th Global Power, Energy and Communication Conference, GPECOM 2024
SP - 294
EP - 299
BT - Proceedings - 2024 IEEE 6th Global Power, Energy and Communication Conference, GPECOM 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th IEEE Global Power, Energy and Communication Conference, GPECOM 2024
Y2 - 4 June 2024 through 7 June 2024
ER -