Refrigeration and Air Conditioning
The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process)

(h1 - h2)/ (hA - h2)
(hA - h2)/ (h1 - h2)
(h2 - hA)/ (h1 - h2)
(hA - h1)/ (h2 - h1)

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Refrigeration and Air Conditioning
Which of the following statement is correct?

The wet bulb temperature is a measure of enthalpy of moist air
All of the listed here
The constant enthalpy lines are also constant wet bulb temperature lines
The wet bulb and dry bulb temperature are equal at saturation condition

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