Consider the following statements in respect of an evaporative cooling process: 1. The wet-bulb temperature remains constant. 2. The dew-point temperature remains constant. 3. The enthalpy remains constant. Which of the above statements are correct?

1, 2 and 3
1 and 2 only
2 and 3 only
1 and 3 only

LohaHridoy

7 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 4 : 1 and 3 only

Evaporative cooling: It is obtained during the process of adiabatic saturation, where there is the removal of sensible heat from the air and an equivalent amount of heat addition in the form of latent heat to it in the form of added water vapor.

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Evaporative cooling takes place along lines of constant wet-bulb temperature or enthalpy.
This is because there is no change in the amount of energy in the air.
The energy is merely converted from sensible energy to latent energy.
The moisture content of the air increases as the water is evaporated which results in an increase in relative humidity along a line of constant wet-bulb temperature.

The dew point temperature of the air during evaporative cooling does not remain constant but it decreases.

7 views Answered 2022-09-04 04:29

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