Consider the conditions of .107. Account-ing for
Chapter 13, Problem 13.122(choose chapter or problem)
Consider the conditions of 9.107. Account-ing for radiation, as well as convection, across thehelium-filled cavity, determine the mass rate atwhich gaseous nitrogen is vented from the system.The cavity surfaces are diffuse and gray with emis-sivities of ?i??o?0.3. If the cavity is evacuated,how may surface conditions be altered to furtherreduce the evaporation? Support your recommenda-tion with appropriate calculations.
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