Refrigeration and Air Conditioning
An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by

e₁ + e₂
e₁e₂
1/e₁ + 1/e₂
(e₁ + e₂)/ e₁ + e₂ - e₁e₂

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
Dry bulb temperature is the temperature of air recorded by a thermometer, when

None of the listed here
Its bulb is surrounded by a wet cloth exposed to the air
It is not affected by the moisture present in the air
The moisture present in it begins to condense

ANSWER DOWNLOAD EXAMIANS APP