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Heat Transfer Research

ISSN for PRINT: 1064-2285

Institutional price:	$2485.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

2006, Volume37

94 pages

DOI: 10.1615/HeatTransRes.v37.i3

Issue price - $363.00

Development of an Improved Mode of Heat Transfer of a Hydrocarbon Heat Carrier under a Supercritical Pressure in an External Acoustic Field of a Standing Wave Formed by Thermoacoustic Self-Oscillations of Pressure

Ch. M. Verdiev
Azerbaijan State Oil Academy, Baku, Azerbaijan

D. Ch. Verdiev
Azerbaijan State Oil Academy, Baku, Azerbaijan

ABSTRACT

The data on experimental investigation and calculation of the local coefficient of heat transfer of toluene, which, in the case of mixed convection and at a supercritical pressure, flows in small-diameter vertical tubes (d = 3−4 mm) at a constant heat flux on the wall (a descending flow) are presented. Experiments were carried out in the field of convective heat transfer accompanied by generation of high-frequency pressure oscillations of a heat carrier. It has been established that high-frequency pressure oscillations represent standing pressure waves. It is shown that the distribution of the wall temperature and of the heat-transfer coefficient over the tube length depends on the local distribution of pressure in a standing wave. The boundary of the beginning of thermoacoustic oscillations has been found.