GATE Past Year Questions: Psychrometric Process Notes | EduRev

Thermodynamics

Mechanical Engineering : GATE Past Year Questions: Psychrometric Process Notes | EduRev

The document GATE Past Year Questions: Psychrometric Process Notes | EduRev is a part of the Mechanical Engineering Course Thermodynamics.
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Try yourself:Wet bulb depression, under saturated ambient air conditions:

[1989]

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Try yourself:During the Chemical dehumidification process of air

[1999]

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Try yourself:Water at 42°C is sprayed into a stream of air at atmospheric pressure, dry bulb temperature of 40ºC and a wet bulb temperature of 20°C. The air leaving the spray humidifier is not saturated. Which of the following statements is true?

[2005]

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Try yourself:Various psychrometric processes are shown in the figure below.
Process in Figure
P. 0-1
Q. 0-2
R. 0-3
S. 0-4
T. 0-5

Name of the process
(i) Chemical dehumidification
(ii) Sensible heating
(iii) Cooling and dehumidification
(iv) Humidification with steam injection
(v) Humidification with water injection

GATE Past Year Questions: Psychrometric Process Notes | EduRev
The matching pair are

[2005]

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Try yourself:Dew point temperature is the temperature at which condensation begins when the air is cooled at constant

[2006]

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Try yourself:The statements concern psychrometric chart.
1. Constant relative humidity lines are uphill straight lines to the right.
2. Constant wet bulb temperature lines are downhill straight lines to the right.
3. Constant specific volume lines are downhill straight lines to the right.
4. Constant enthalpy lines are coincident with constant wet bulb temperature lines.
Which of the statements are correct?

[2006]

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Try yourself:Atmospheric air at a flow rate of 3 kg/s (on dry basis) enters a cooling and dehumidifying coil with an enthalpy of 85 kJ/kg of dry air and a humidity ratio of 19 grams/kg of dry air. The air leaves the coil with an enthalpy of 43 kJ/kg of dry air and a humidity ratio of 8 grams/kg of dry air. If the condensate water leaves the coil with an enthalpy of 67 kJ/kg, the required cooling capacity of the coil in kW is

[2007]

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Try yourself:Air (at atmospheric pressure) at a dry bulb temperature of 40°C and wet bulb temperature of 20°C is humidified in an air washer operating with continuous water recirculation. The wet bulb depression, the difference between the dry and wet bulb temperatures) at the exit is 25% of that at the inlet. The dry bulb temperature at the exit of the air washer is closest to

[2008]

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Try yourself:Moist air at 35°C and 100% relative humidity is entering a psychrometric device and leaving at 25°C and 100% relative humidity. The name of the device is

[2014]

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Try yourself:If a mass of moist air contained in a closed metallic vessel is heated, then its

[2017]

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