Description:
KNOWN: Air and wall temperatures of a room. Surface temperature, convection coefficient and emissivity of a person in the room.
FIND: Basis for difference in comfort level between summer and winter
ASSUMPTIONS: 1) Person may be approximated as a small object in a large enclosure
ANALYSIS: Thermal discomfort is linked to heat loss from the human body, a chilled feeling is associated with excessive heat loss. Because the temperature of the room air is fixed the different summer and winter levels cannot be attributed to convection heat transfer from the body.
Calculation Reference
Fundamentals of Heat and Mass Transfer - Frank P. Incropera
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