The effect of natural convection on heat transfer in cryogenic porous insulations
Abstract
An experimental and theoretical study was conducted on two dimensional, steady state, natural convection in gas-filled, cryogenic, porous insulations, packed in a rectangular enclosure with one wall kept at uniform cryogenic temperature with liquid N2 and the other at uniform room temperature. Variation of gas and solid properties, including thermal conductivity, with temperature has a significiant effect on the results and were included in the analysis. The results are presented in terms of dimensionless, temperature distributions, Nusselt numbers, streamlines, and velocity distributions. Good agreement was obtained between the theoretical and experimental results.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1977
- Bibcode:
- 1977PhDT........56D
- Keywords:
-
- Convective Heat Transfer;
- Cryogenics;
- Porosity;
- Thermal Insulation;
- Liquid Nitrogen;
- Temperature Distribution;
- Thermal Conductivity;
- Fluid Mechanics and Heat Transfer