TY - JOUR
T1 - Two-phase pressure drops in a helically coiled steam generator
AU - Santini, Lorenzo
AU - Cioncolini, Andrea
AU - Lombardi, Carlo
AU - Ricotti, Marco
N1 - Funding Information:
The authors are grateful to Gustavo Cattadori, Andrea Achilli and Stefano Gandolfi from SIET labs for their valuable collaboration and deep expertise. The authors are grateful also to Mario Carelli and the colleagues of the IRIS project for the opportunity to work in such a stimulating and challenging adventure. This research activity has been performed in the frame of the FIRB-2001 and COFIN-2004 programmes and with the financial support from the MIUR-Italian Ministry of the University and Research.
PY - 2008/9
Y1 - 2008/9
N2 - An experimental investigation regarding two-phase diabatic pressure drops inside a helically coiled heat exchanger have been carried out at SIET thermo-hydraulics labs in Piacenza (Italy). The experimental campaign is part of a wide program of study of the IRIS innovative reactor steam generator. The test section consists of an AISI 316 stainless steel tube, 32 m length, 12.53 mm inner diameter, curved in helical shape with a bend radius of 0.5 m and a helix pitch of 0.8 m, resulting in a total height of the steam generator tube of 8 m. The explored operating conditions for two-phase flow experiences range from 192 to 824 kg/m2 s for the mass flux, from 0 to 1 for the quality, from 1.1 to 6.3 MPa for the pressure, from 50 to 200 kW/m2 for the heat fluxes. A frictional two-phase pressure drops correlation, based on an energy balance of the two-phase mixture and including the 940 experimental points, is proposed. Comparison with existing correlations shows the difficulty in predicting two-phase pressure drops in helical coil steam generators.
AB - An experimental investigation regarding two-phase diabatic pressure drops inside a helically coiled heat exchanger have been carried out at SIET thermo-hydraulics labs in Piacenza (Italy). The experimental campaign is part of a wide program of study of the IRIS innovative reactor steam generator. The test section consists of an AISI 316 stainless steel tube, 32 m length, 12.53 mm inner diameter, curved in helical shape with a bend radius of 0.5 m and a helix pitch of 0.8 m, resulting in a total height of the steam generator tube of 8 m. The explored operating conditions for two-phase flow experiences range from 192 to 824 kg/m2 s for the mass flux, from 0 to 1 for the quality, from 1.1 to 6.3 MPa for the pressure, from 50 to 200 kW/m2 for the heat fluxes. A frictional two-phase pressure drops correlation, based on an energy balance of the two-phase mixture and including the 940 experimental points, is proposed. Comparison with existing correlations shows the difficulty in predicting two-phase pressure drops in helical coil steam generators.
KW - Coils
KW - Helically coiled pipes
KW - Pressure drops
KW - Steam generator
KW - Two-phase flow
UR - http://www.scopus.com/inward/record.url?scp=49349086771&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2008.02.034
DO - 10.1016/j.ijheatmasstransfer.2008.02.034
M3 - 文章
AN - SCOPUS:49349086771
SN - 0017-9310
VL - 51
SP - 4926
EP - 4939
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 19-20
ER -