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Question for GATE Past Year Questions: Psychrometric Process
Try yourself:Wet bulb depression, under saturated ambient air conditions:

[1989]

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Question for GATE Past Year Questions: Psychrometric Process
Try yourself:During the Chemical dehumidification process of air

[1999]

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Question for GATE Past Year Questions: Psychrometric Process
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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Question for GATE Past Year Questions: Psychrometric Process
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 | Thermodynamics - Mechanical Engineering
The matching pair are

[2005]

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Question for GATE Past Year Questions: Psychrometric Process
Try yourself:Dew point temperature is the temperature at which condensation begins when the air is cooled at constant

[2006]

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Question for GATE Past Year Questions: Psychrometric Process
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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Question for GATE Past Year Questions: Psychrometric Process
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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Question for GATE Past Year Questions: Psychrometric Process
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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Question for GATE Past Year Questions: Psychrometric Process
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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Question for GATE Past Year Questions: Psychrometric Process
Try yourself:If a mass of moist air contained in a closed metallic vessel is heated, then its

[2017]

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The document GATE Past Year Questions: Psychrometric Process | Thermodynamics - Mechanical Engineering is a part of the Mechanical Engineering Course Thermodynamics.
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FAQs on GATE Past Year Questions: Psychrometric Process - Thermodynamics - Mechanical Engineering

1. What is a psychrometric process?
Ans. A psychrometric process is a study of the physical and thermodynamic properties of air and water vapor mixtures. It involves analyzing the changes in temperature, humidity, pressure, and other variables as air undergoes various transformations.
2. How is a psychrometric process represented on a psychrometric chart?
Ans. A psychrometric process is represented by a line on a psychrometric chart. This line connects the initial and final states of the air-water vapor mixture and represents the changes in temperature and humidity during the process.
3. What are the different types of psychrometric processes?
Ans. There are four main types of psychrometric processes: heating, cooling, humidification, and dehumidification. Heating involves increasing the temperature of the air, cooling involves decreasing the temperature, humidification involves adding moisture to the air, and dehumidification involves removing moisture from the air.
4. How can a psychrometric process be used in HVAC systems?
Ans. Understanding psychrometric processes is crucial for designing and operating HVAC (Heating, Ventilation, and Air Conditioning) systems. By analyzing the properties of air-water vapor mixtures, engineers can determine the energy requirements for heating, cooling, and dehumidifying air, and design systems that provide optimal comfort and efficiency.
5. What are some applications of psychrometric processes in real life?
Ans. Psychrometric processes have various applications in real life. They are used in weather forecasting to analyze atmospheric conditions and predict changes in temperature and humidity. They are also used in the design of air conditioning systems, agricultural processes, and industrial processes where temperature and humidity control are critical.
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