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Investigation of heat transfer from a lead heat carrier to a tube streamlined longitudinally

Investigation of heat transfer from a lead heat carrier to a tube streamlined longitudinally Abstract Results of experimental studies on the local characteristics of heat transfer from a lead heat carrier to the surface of a cooled tube in an annular gap are shown at control and alteration of oxygen admixture content under the conditions of power circuits with heavy liquid-metal heat-transfer agent. This work is aimed at obtaining the grounded formulas for engineering calculations of heat transfer surfaces. Investigations were carried out at the lead temperature of 400–500 °C, the average velocity of heat-transfer agent of 0.1–1.5 m/s, the range of Prandtl number of 0.0123–0.0211 and Peclet numbers of 500–7000. The heat flux changed within 50–160 kW/m2. Controllable changing content of oxygen admixture changed from the value of thermodynamic activity of oxygen from 10−5-100 to saturation and higher with deposition of lead oxides near the heat-transferring surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Investigation of heat transfer from a lead heat carrier to a tube streamlined longitudinally

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Publisher
Springer Journals
Copyright
2007 A.V. Beznosov, A.A. Molodtsov, A.V. Nazarov, S.Yu. Savinov, and O.O. Kudrin
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S0869864307030109
Publisher site
See Article on Publisher Site

Abstract

Abstract Results of experimental studies on the local characteristics of heat transfer from a lead heat carrier to the surface of a cooled tube in an annular gap are shown at control and alteration of oxygen admixture content under the conditions of power circuits with heavy liquid-metal heat-transfer agent. This work is aimed at obtaining the grounded formulas for engineering calculations of heat transfer surfaces. Investigations were carried out at the lead temperature of 400–500 °C, the average velocity of heat-transfer agent of 0.1–1.5 m/s, the range of Prandtl number of 0.0123–0.0211 and Peclet numbers of 500–7000. The heat flux changed within 50–160 kW/m2. Controllable changing content of oxygen admixture changed from the value of thermodynamic activity of oxygen from 10−5-100 to saturation and higher with deposition of lead oxides near the heat-transferring surface.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Sep 1, 2007

References