Abstract
Wet- and dry-bulb temperatures were measured for Hg-N2 and Cd-H2 systems in a high temperature psychrometer apparatus specially constructed for this purpose. The apparatus features a device termed a self-adjusting shield developed to minimize heat transfer by radiation. A correlation for the psychrometric ratio for spherical shaped wet bulbs was formulated and experimental results showed close agreement with the theoretical values calculated from the proposed correlation.
Similar content being viewed by others
Abbreviations
- Fs :
-
Froessling number, Eqs. [6] and [7].
- Hg :
-
metallic vapor humidity in bulk gas, lb.-vapor/ lb.-carrier gas.
- Hw :
-
metallic vapor humidity at liquid-gas interface, lb.-vapor/lb.-carrier gas
- hg :
-
convective heat transfer coefficient, Btu/h sq ft
- h1 :
-
radiative heat transfer coefficient, Btu/h sq ft
- kg :
-
gas-phase mass transfer coefficient, lb.-mole/h sq ft-atm.
- Mg :
-
molecular weight of gas, lb./lb.-mole.
- Nu:
-
Nusselt number for heat transfer.
- P:
-
total pressure, atm.
- Pr:
-
Prandtl number
- Re:
-
Reynolds number
- S:
-
specific heat, Btu/lb.-°F.
- Sc:
-
Schmidt number
- Sh:
-
Sherwood number for mass transfer
- Tg :
-
temperature of bulk gas, °F
- Ts :
-
temperature of surroundings, °F
- Tw :
-
wet-bulb temperature, °F
- λ:
-
latent heat of vaporization, Btu/lb.
References
T. H. Chilton and H. P. Colburn:Ind. Eng. Chem., 1934, vol. 26, pp. 1183–87.
C. R. Wilke and D. T. Wasan:AIChE-I. Chem. Eng. Symposium Series, 1965, no. 6, Inst. Chem. Eng., London.
T. R. Galloway and B. H. Sage:Int. J. Heat Mass Trans., 1967, vol. 10, pp. 1195–1210.
P. D. Hills and J. Paulin:J. Sci. Instru. (J. Phys. E) Series 2, 1969, vol. 2, pp. 713–17.
S. W. K. Morgan:Trans. Inst. Mining Met., 1957, vol. 66, p. 553.
N. A. Warner:Proc. Aust. I.M.M. Conf., 1965, pp. 111–18, Univ. N.S.W.
Author information
Authors and Affiliations
Additional information
Formerly Graduate Student, University of New South Wales,
Formerly Associate Professor, University of New South Wales
Rights and permissions
About this article
Cite this article
Regozo, D.L., Standish, N. & Warner, N.A. An investigation of wet-and dry-bulb psychrometry in metallic vapor-gas systems. Metall Trans 4, 695–699 (1973). https://doi.org/10.1007/BF02643077
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02643077