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With reference to following psychrometric chart, match List-I with List-ll and select the correct choice:
The mixing of two or more streams of moist air in air-conditioning process is
Process 1 —> 2, adiabatic mixing
In most of water coolers, the atmospheric air is made to pass through a wet khas-khas or bamboo mat to render a surface cool in summer. Thermodynamically this process may be called
Consider the following statements: In a chemical dehumidification process,
1. DPT decreases
2. WBT decreases
3. DBT decreases
Q. Which of these are correct?
1→2 : Chemical dehumidication so, DBT increases
The psychrometric chart in air conditioning determines the
On Psychrometric chart, the constant wet bulb temperature lines coincide with
On psychrometric chart, constant WBT fines coincide with constant enthalpy lines.
Heating of air without changing its moisture content takes place on Psychrometric chart along
td1 = dry bulb temperature of air entering to the coil
td2 = dry bulb temperature of air living the coil
td3 = dry bulb temperature of coil
For cooling and dehumidification of unsaturated moist air, it must be passed over a coil at a temperature
Cooling and dehumidification : The dehumidification of air is only possible when the effective surface temperature of the cooling coil is less than the dew point temperature of the air entering the coil.
Pure dehumidification can be achieved by passing air through the spray water maintained at
Pure dehumidification is achieved by passing air through the spray water which is maintained at dew point temperature. By doing this, excess moisture condenses and temperature remains constant.
During adiabatic saturation process on unsaturated air, the parameter which remains constant is
During the adiabatic saturation process, the partial pressure of vapour increases, although the total pressure of the air-vapour mixture remains constant.
It may be noted that the adiabatic saturation temperature is taken equal to the WBT for practical purposes.