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ISSN Online: 2377-424X

International Heat Transfer Conference 3
August, 7-12, 1966, Chicago, USA

EXPERIMENTAL INVESTIGATION OF NATURAL CONVECTION IN SINGLE AND MULTIPLE VERTICAL ANNULI WITH HIGH PRESSURE CARBON DIOXIDE

Get access (open in a dialog) DOI: 10.1615/IHTC3.940
pages 132-138

Sinopsis

An experimental investigation has been undertaken to measure the natural convective heat transfer coefficients in narrow vertical annuli containing carbon dioxide at pressures up to 50 atmospheres. Firstly, the properties of single annular gaps were studied, and secondly, configurations with an annular gap sub-divided laterally.
The annular gaps for the single annuli were 0.300, 0.150 and 0.050 in., and the annulus which was sub-divided was that with a gap of 0.300 in.
The results for the single gaps have been correlated in the form:
Nut = A(GrtPr)0.30(H/t)−0.25 For the multiple gaps, although improvement in insulating properties is significant, the magnitude is not as large as expected from simple analysis.