1939 Faculty Meeting Minutes

Faculty meeting minutes of the Morehead State Teacher College for 1939

1961 ICDA Conference Program (US/Canada)

Documents from the 12th ICDA Convention held in Chicago, IL in 1961: Convention programBanquet programOfficial program (calendar

An experimental method of determining the thermal accommodation coefficients of metallic surfaces

In the free molecule regime, Knudsen number greater than 10, heat is transferred from a solid by radiation and conduction. The ability of a surface to emit radiant energy is governed by a surface property called emittance while the surface property which apparently regulates the amount of heat transferred by conduction is called the thermal accommodation coefficient. This thesis presents the results of an experimental investigation to determine a relationship between these two properties, emittance and thermal accommodation coefficient. A test apparatus was constructed to measure both the radiation and conduction contributions between two concentric cylinders. cylinders of aluminum and steel, both with machined surfaces, were tested. The results of this investigation indicated no apparent relationship between the emittance and the thermal accommodation coefficient when air was used as the separating gas. Emittance was determined at pressures between 3 x 10⁻⁶ and 5.4 x 10⁻⁵ millimeters of mercury while pressures between 5.0 x 10⁻³ and 7.5 x 10⁻³ millimeters of mercury were used for the evaluation of the thermal accommodation coefficient --Abstract, page ii

Avion 1980-02-06

https://commons.erau.edu/avion/1736/thumbnail.jp