Atmospheric air with Dry Bulb Temperature (DBT) of 24°C and Relative Humidity of 35%, entering in a circular duct (assume no pressure drop in the duct) is heated by an electrical resistance arrangement inside the duct. The DBT of air measured at the outlet of
the duct is equal to 30°C. Considering the flow to be steady, which of
the following statement(s) is (are) correct as regards to the outlet air,
with respect to the inlet air?
● There is no change in the Relative Humidity
O There is no change in the Dew Point Temperature
O There is no change in the Specific Humidity O There is no change in the Specific Enthalpy
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Explanation:
exist in the atmosphere at low pressure. ... It is the difference between dry bulb temperature and wet ... The wet bulb depression indicates relative humidity of the air. ... When the partial pressure of water vapour (Pv) is equal to the saturation ... to enter the return duct. 6. ... Required inside conditions = 20° C DBT and 60% RH.
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