Engineering, 05.05.2020 18:35 journeyburks07
Two metal plates are connected by a long ASTM A479 904L stainless steel bar. A hot gas, at 400°C, flows between the plates and across the bar. The bar has a square cross section with a width of 2 cm, and the length of the bar exposed to the hot gas is 10 cm. The average convection heat transfer coefficient for the bar in crossflow is correlated with the gas velocity as h = 13.6V0.675, where h and V have the units W/m2⋅K and m/s, respectively. The maximum use temperature for the ASTM A479 904L is 260°C. The temperature of the bar is maintained by a cooling mechanism with the capability of removing heat at a rate of 100 W. Determine the maximum velocity that the gas can achieve without heating the stainless steel bar above the maximum use temperature set by the ASME Code for Process Piping.
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Two metal plates are connected by a long ASTM A479 904L stainless steel bar. A hot gas, at 400°C, fl...
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