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eat a silgie (a) If the temperature of the room is 70.0°F, determine the amount radiant energy delivered to the room by the stove each second if the emissivity is 0.950. w (b) If the room is a square with walls that are 8.00 ft high and 30.0 ft wide, determine the R-value needed in the walls and ceiling to maintain the inside temperature at 70.0°F if the outside temperature is 32.0°F. Note that we are ignoring any heat conveye the stove via convection and any energy lost through the walls (and windows!) via convection or radiation.

eat a silgie (a) If the temperature of the room is 70.0°F, determine the amount radiant energy delivered to the room by the stove each second if the emissivity is 0.950. w (b) If the room is a square with walls that are 8.00 ft high and 30.0 ft wide, determine the R-value needed in the walls and ceiling to maintain the inside temperature at 70.0°F if the outside temperature is 32.0°F. Note that we are ignoring any heat conveye the stove via convection and any energy lost through the walls (and windows!) via convection or radiation.

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A wood stove is used to heat a single room. The stove is cylindrical in shape, with a diameter of 40.0 cm and a length of 55.0 cm, and operates at a temperature of 410°F. (o = 5.6696 x 108 w/m2 . K, 1 Btu = 1054 J.) (a) If the temperature of the room is 70.0°F, determine the amount of radiant energy delivered to the room by the stove each second if the emissivity is 0.950. (b) If the room is a square with walls that are 8.00 ft high and 30.0 ft wide, determine the R-value needed in the walls and ceiling to maintain the inside temperature at 70.0°F if the outside temperature is 32.0°F. Note that we are ignoring any heat conveyed by the stove via convection and any energy lost through the walls (and windows!) via convection or radiation. ft2. oF . h/Btu
Transcribed Image Text:A wood stove is used to heat a single room. The stove is cylindrical in shape, with a diameter of 40.0 cm and a length of 55.0 cm, and operates at a temperature of 410°F. (o = 5.6696 x 108 w/m2 . K, 1 Btu = 1054 J.) (a) If the temperature of the room is 70.0°F, determine the amount of radiant energy delivered to the room by the stove each second if the emissivity is 0.950. (b) If the room is a square with walls that are 8.00 ft high and 30.0 ft wide, determine the R-value needed in the walls and ceiling to maintain the inside temperature at 70.0°F if the outside temperature is 32.0°F. Note that we are ignoring any heat conveyed by the stove via convection and any energy lost through the walls (and windows!) via convection or radiation. ft2. oF . h/Btu
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