TY - GEN
T1 - NONUNIFORM HEAT TRANSFER IN HORIZONTAL HELICAL COILS TUBE STEAM GENERATORS
AU - Bai, Bofeng
AU - Guo, Liejin
AU - Chen, Xuejun
N1 - Publisher Copyright:
© 1997 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1997
Y1 - 1997
N2 - The present experiment is conducted to study the nonuniform heat transfer of single-phase water turbulent flow and two-phase steamwater flow in horizontal helical coils tubes. The inner and the outer diameter of the tube are 11mm and 15mm respectively, and the ratio of the diameter of the coil to that of the tube is 23.27. The experimental pressure ranges from 0.5 to 3.0MPa, mass flowrate from 200 to 2500 kg/m2s, heat flux from 230 to 500kW/m2, and the maximum exit steam quality 0.S6. Along both the tube axial direction and the periphery on the crosssection, the local heat transfer coefficients are not evenly distributed. The secondary flow has less contribution to the enhancement heat transfer of the coil with increasing Reynolds number to a high level. Taking the average coefficient at outlet section as that of the coil is not reasonable.
AB - The present experiment is conducted to study the nonuniform heat transfer of single-phase water turbulent flow and two-phase steamwater flow in horizontal helical coils tubes. The inner and the outer diameter of the tube are 11mm and 15mm respectively, and the ratio of the diameter of the coil to that of the tube is 23.27. The experimental pressure ranges from 0.5 to 3.0MPa, mass flowrate from 200 to 2500 kg/m2s, heat flux from 230 to 500kW/m2, and the maximum exit steam quality 0.S6. Along both the tube axial direction and the periphery on the crosssection, the local heat transfer coefficients are not evenly distributed. The secondary flow has less contribution to the enhancement heat transfer of the coil with increasing Reynolds number to a high level. Taking the average coefficient at outlet section as that of the coil is not reasonable.
UR - https://www.scopus.com/pages/publications/85127229248
U2 - 10.1115/IMECE1997-0613
DO - 10.1115/IMECE1997-0613
M3 - 会议稿件
AN - SCOPUS:85127229248
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 107
EP - 113
BT - Nuclear Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Nuclear Engineering
Y2 - 16 November 1997 through 21 November 1997
ER -