Heat transfer by radiation to surfaces at low temperatures | Zendy

Moses Blackman | Zendy; Alfred Charles Egerton | Zendy; E. V. Truter | Zendy

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Heat transfer by radiation to surfaces at low temperatures

Author(s) -

Moses Blackman,

Alfred Charles Egerton,

E. V. Truter

Publication year - 1948

Publication title -

proceedings of the royal society of london a mathematical and physical sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.814

H-Index - 135

eISSN - 2053-9169

pISSN - 0080-4630

DOI - 10.1098/rspa.1948.0071

Subject(s) - brass , copper , materials science , heat transfer , aluminium , graphite , radiation , metallurgy , thermal radiation , composite material , thermal conductivity , tin , thermodynamics , optics , physics

A study of the transfer of heat between the walls of vacuum vessels is made. It is shown that the heat transferred from the outer wall at ordinary temperature to the inner vessel at 90° K is greater than would be expected from the reflectivity of the inner wall, as estimated from its electrical conductivity. The apparent emissivities at 90° K of copper, silver, gold, tin, brass, aluminium, steel and graphite were determined. It was found that a freshly reduced smooth surface of copper was more efficient in diminishing the heat transfer than a highly polished surface.

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