INFRARED RADIATIVE ENERGY TRANSFER IN GASEOUS SYSTEMS.
Final rept. Sep 66-Jun 68,
STATE UNIV OF NEW YORK STONY BROOK COLL OF ENGINEERING
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The object of this investigation was to study infrared radiative energy transfer within real gases, and several simple gaseous systems were analyzed. The first consisted of a gas bounded by two parallel plates having the same temperature. Within the gas there was a uniform heat source per unit volume. For this system, both wall emissivity effects and radiation-conduction interactions were investigated. The second system consisted of fully-developed laminar flow and heat transfer in a parallel plate duct under the boundary condition of a uniform surface heat flux. In addition, an approximate method was developed such that the results for the parallel plate duct could be applied to fully-developed laminar flow and heat transfer through a circular tube. This latter case was also studied experimentally using a 2.37 cm diameter tube. Nonabsorbing gas results were first obtained employing nitrogen, while the absorbing gas experiments utilized both carbon dioxide and nitrous oxide. Comparison of analytical and experimental results showed that the analysis underpredicted the ability of the absorbing gases to transmit radiative energy. This was probably due to neglecting certain weak vibration-rotation bands in formulating the analysis. The results were, however, in qualitative agreement. Author