A 12 ft by 12 ft square corner room has an exterior wall with a surface temperature of 58°F and a glass window surface covering one wall at a surface temperature of 48°F. The two interior wall surfaces are adjacent to one another and are at a temperature of 72°F.
a. Approximate the mean radiant temperature sensation of a person standing in the center of the room. Neglect the effects of the floor and ceiling.
b. Approximate the mean radiant temperature sensation of a person standing 2 ft away from the center of the window. Neglect the effects of the floor and ceiling.
c. Approximate the mean radiant temperature sensation of a person standing 2 ft away from the center of the window. Assume that the window curtains are closed and the temperature of the interior surface of the curtains is 62°F. Neglect the effects of the floor and ceiling.