A) Human skin is almost a perfect blackbody, with an emissivity of approximately 0.98. How much thermal power is radiate
Posted: Mon May 09, 2022 6:22 pm
A) Human skin is almost a perfect blackbody, with an emissivity
of approximately 0.98. How much thermal power is radiated by a
person covered by 1.5 square metres of skin, at a surface
temperature of 34.4 degrees Celsius?
B) A foam insulation panel has an area of 1.9 m².
There is a temperature difference of 18.9 K maintained across
the panel. The thermal power conducted by the panel is
8.1 W.
(a) Calculate the U-value.
(b) Calculate the R-value.
of approximately 0.98. How much thermal power is radiated by a
person covered by 1.5 square metres of skin, at a surface
temperature of 34.4 degrees Celsius?
B) A foam insulation panel has an area of 1.9 m².
There is a temperature difference of 18.9 K maintained across
the panel. The thermal power conducted by the panel is
8.1 W.
(a) Calculate the U-value.
(b) Calculate the R-value.