Question

A 50 mm thick steel plate (AISI347) has a uniform heat flux applied to its bottom surface by a heater. The heater is in contact with the steel plate, and the interface between the heater and steel has a contact resistance of 2.0 x 10-4 m2*K/W. The top surface of the plate is exposed to surrounding air (T = 20oC, h = 10 W/m2*K) and exchanges radiation with surroundings at Tsur = 10oC. The emissivity of the plate is 0.85. The steel and heater are embedded in insulation. If the surface temperature, Ts, is 50oC, what is the steady-state temperature of the heater surface at the interface with the steel plate, T1?

Problem #4 (25 po surface by a heater. The heater is in contact with the steel plate, and the interface between the heater and steel has a contact resistance of 2.0 x 10-m2·K/W. The top surface of the plate is exposed to surrounding , 20-c h= 10 W/m2tK) and exchanges radiation with surroundings atr7, r 10°C, The emissivity of the plate is 0.85. The steel and heater are embedded in insulation. If the surface temperature, T, is 50 °C, what is the steady-state temperature of the heater surface at the interface with the steel plate, Ti? h= 10 W/m2 . K T, = 20°C Ts= 50°C steel heater

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Heater ahead-t △hale Heat balance- ас con vecht on at-surface ± GradinHon 凸 4 2 SI5 446m t Ra gis. 446 1 44.2 2018-2-19 21:53

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