Effect of porous coating on critical heat flux

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · International Communications in Heat and Mass Transfer

DOI:https://doi.org/10.1016/0735-1933(96)00031-0· OSTI ID:248019

Schroeder-Richter, D; Yildiz, S; Bartsch, G ^[1]

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1. Technische Univ. Berlin (Germany). Inst. fuer Energietechnik

The critical heat flux (CHF) is studied experimentally in vertical tubes heated directly using power current (DC 2,500 A, 15 V) and cooled with water at a low mass flow rate (0--200 kg/m{sup 2}s) and at a low pressure (1.0--8.0 bar). The authors used a smooth tube and a tube with a porous coating layer sintered onto the inner surface. The results are compared with each other and with correlations by Katto and Weber. The authors determined enhancement of heat transfer as well as a negative effect of the porous coating below the expected value of critical heat flux.

• OSTI ID: 248019
• Journal Information: International Communications in Heat and Mass Transfer, Journal Name: International Communications in Heat and Mass Transfer Journal Issue: 4 Vol. 23; ISSN 0735-1933; ISSN IHMTDL
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
AUGMENTATION
COATINGS
CRITICAL HEAT FLUX
HEAT TRANSFER
POROUS MATERIALS
TUBES