hot square plate 0.6-m x 0.6-m and 4 cm thick placed horizo om. The upper side of the plate is maintained at constant tempera 300 C (as shown below). The plate is made of carbon sted //m.°C) and the emissivity of the upper surface of the plate is he ambient air temperature is 20°C and the temperature of the in E the room is 25°C. If the convection heat transfer coeffice =posed plate surface is 15 W/m2.C, determine: a) The rate of heat loss from the plate by convection. b) The rate of heat loss from the plate by radiation.
hot square plate 0.6-m x 0.6-m and 4 cm thick placed horizo om. The upper side of the plate is maintained at constant tempera 300 C (as shown below). The plate is made of carbon sted //m.°C) and the emissivity of the upper surface of the plate is he ambient air temperature is 20°C and the temperature of the in E the room is 25°C. If the convection heat transfer coeffice =posed plate surface is 15 W/m2.C, determine: a) The rate of heat loss from the plate by convection. b) The rate of heat loss from the plate by radiation.
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Transcribed Image Text:Dr. Muhammad Tawalbeh
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A hot square plate 0.6-m x 0.6-m and 4 cm thick placed horizontally in a
room. The upper side of the plate is maintained at constant temperature (Tur)
of 300 C (as shown below). The plate is made of carbon steel (k 55
W/m. C) and the emissivity of the upper surface of the plate is (ɛ = 0.8).
The ambient air temperature is 20°C and the temperature of the inner surface
of the room is 25°C. If the convection heat transfer coefficient on the
exposed plate surface is 15 W/m?.°C, determine:
a) The rate of heat loss from the plate by convection.
b) The rate of heat loss from the plate by radiation.
c) The inside plate temperature (Tins).
T-25C
T-20c
T-300C
Dr. Muhammad Tawalbeh
0.6 m
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