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Engineering, 09.02.2021 01:00 slonzyy8397
The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, kA = 25 W/m ⋅ K and kC = 60 W/m ⋅ K, and known thickness, LA = 0.40 m and LC = 0.20 m. The third material, B, which is sandwiched between materials A and C, is of known thickness, LB = 0.20 m, but unknown thermal conductivity kB. Under steady-state operating conditions, measurementsreveal an outer surface temperature of Ts, o =20ºC, an inner surface temperature of Ts, i= 600ºC, and an oven air temperature ofT¥=800ºC. The inside convection coefficienth is known to be 25 W/(m^2•K). What isthe value of kB?
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Engineering, 04.07.2019 18:20, AnonymousLizard52303
A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.
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