Title
An Experimental Investigation of Free Convection Heat Transfer in Supercritical Helium
Document Type
Article
Publication Date
5-1980
Department
Department of Mechanical Engineering-Engineering Mechanics
Abstract
An experimental study of free convection heat transfer from a copper sphere to supercritical helium is presented. The heat-transfer coefficient is measured in the transposed critical line region covering pressures from 2.3-35 atm (0.23-3.55 MPa) and temperatures from 5.3 to 25 K. Empirical correlations accurate to ±20% between Nu, Pr, Gr, pb, Δp, Tb and ΔT are obtained. A boiling-like phenomenon is observed experimentally near the critical point in that the heat-transfer coefficient h increases with temperature difference ΔT until h reaches a maximum after which h decreases for larger ΔT.
Publication Title
International Journal of Heat and Mass Transfer
Recommended Citation
Hilal, M.,
&
Boom, R.
(1980).
An Experimental Investigation of Free Convection Heat Transfer in Supercritical Helium.
International Journal of Heat and Mass Transfer,
23(5), 697-705.
http://doi.org/10.1016/0017-9310(80)90014-9
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5266
Publisher's Statement
© 1980