TY - GEN
T1 - Steam condensation heat transfer coefficient in large, flattened-tube steam condensers
AU - Davies, William A.
AU - Hrnjak, Pega
N1 - Publisher Copyright:
© 2019 International Institute of Refrigeration. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Steam condensation heat transfer coefficient (HTC) in a large, flattened tube with variable heat flux, wall temperature and inclination angle is determined experimentally. The condenser tube is that used in air-cooled condensers for power plants. The steel tube has an elongated-slot cross section with inner dimensions of 216 x 16 mm. Vapor and liquid flow concurrently through a 5.7 m long air-cooled conditioning section, and HTC is determined in a 0.12 m long water-cooled test section.. Tube inclination angle is varied from 0 - 25o downwards. The long conditioning section creates conditions in the test section that mimic the conditions in an operating condenser - allowing for realistic development of flow regime and void fraction. HTC is then determined in the water-cooled section. Quality in this section ranges from 0 - 0.75. A visualization section allows determination of flow regime and void fraction. The flow is found to be stratified for all conditions. HTC is found to increase by 6-10 times along the condenser height.
AB - Steam condensation heat transfer coefficient (HTC) in a large, flattened tube with variable heat flux, wall temperature and inclination angle is determined experimentally. The condenser tube is that used in air-cooled condensers for power plants. The steel tube has an elongated-slot cross section with inner dimensions of 216 x 16 mm. Vapor and liquid flow concurrently through a 5.7 m long air-cooled conditioning section, and HTC is determined in a 0.12 m long water-cooled test section.. Tube inclination angle is varied from 0 - 25o downwards. The long conditioning section creates conditions in the test section that mimic the conditions in an operating condenser - allowing for realistic development of flow regime and void fraction. HTC is then determined in the water-cooled section. Quality in this section ranges from 0 - 0.75. A visualization section allows determination of flow regime and void fraction. The flow is found to be stratified for all conditions. HTC is found to increase by 6-10 times along the condenser height.
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U2 - 10.18462/iir.icr.2019.0898
DO - 10.18462/iir.icr.2019.0898
M3 - Conference contribution
AN - SCOPUS:85082656307
T3 - Refrigeration Science and Technology
SP - 1263
EP - 1270
BT - ICR 2019 - 25th IIR International Congress of Refrigeration
A2 - Minea, Vasile
PB - International Institute of Refrigeration
T2 - 25th IIR International Congress of Refrigeration, ICR 2019
Y2 - 24 August 2019 through 30 August 2019
ER -