Heat loss of an athlete
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The following quantities appear in the problem:
Temperatur \(T\) / Leistung \(P\) / Fläche \(A\) / Oberfläche \(S\) /
The following formulas must be used to solve the exercise:
\(\Phi = \epsilon\sigma A T^4 \quad \)
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Exercise:
Estimate the rate of heat loss by radiation of an athlete sitting unclothed in a locker room whose dark walls emissivity . are at a temperature of degreeCelsius. Ase the skin temperature to be degreeCelsius and its emissivity to be .. The surface area of the body not in contact with the chair is ased to be .metersquared.
Solution:
The heat loss of the athlete is the difference between the from the athlete emitted heat and his absorbed heat i.e.: P P_textscriptsize emitted - P_textscriptsize absorbed epsilon_ sigma A T_^ - epsilon_ sigma A T_^ leftepsilon_ T_^ - epsilon_ epsilon_ T_^rightsigma A left. pqK^ - . . K^right .wattperkelvothe permetersquared .metersquared W
Estimate the rate of heat loss by radiation of an athlete sitting unclothed in a locker room whose dark walls emissivity . are at a temperature of degreeCelsius. Ase the skin temperature to be degreeCelsius and its emissivity to be .. The surface area of the body not in contact with the chair is ased to be .metersquared.
Solution:
The heat loss of the athlete is the difference between the from the athlete emitted heat and his absorbed heat i.e.: P P_textscriptsize emitted - P_textscriptsize absorbed epsilon_ sigma A T_^ - epsilon_ sigma A T_^ leftepsilon_ T_^ - epsilon_ epsilon_ T_^rightsigma A left. pqK^ - . . K^right .wattperkelvothe permetersquared .metersquared W