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Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.
The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, are
  • a)
    0.01051, 52.64
  • b)
    0.01291, 63.15
  • c)
    0.01481, 78.60
  • d)
    0.01532, 81.40
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Dew point temperature of air at one atmospheric pressure (1.013 bar) i...
Given: p = 1.013 bar, (pv)tdp = 0.02062
Specific humidity =  

= 63.15 kJ/kg of dry air.
Alternative method
pv = Saturation pressure = 0.02062 bar pa = Partial pressure of air = 0.04241 bar
td = Dry bulb temperature = 30º
tw = Wet bulb temperature = 18º Specific humidity,

= 1.005 × 30 + 0.0129 × 2500
+ 0.01292 × 1.88(30 – 18)
= 63.15 kJ/kg of dry air.
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Most Upvoted Answer
Dew point temperature of air at one atmospheric pressure (1.013 bar) i...
°C. This means that when the temperature of the air drops below 18°C, the air will reach its saturation point and water vapor will begin to condense into liquid water. The dew point temperature is a measure of the amount of moisture in the air, and it is an important factor in determining the likelihood of precipitation, fog, and other weather conditions.
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Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer?
Question Description
Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer?.
Solutions for Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Dew point temperature of air at one atmospheric pressure (1.013 bar) is 18°C. The air dry bulb temperature is 30°C. The saturation pressure of water at 18°C and 30°C are 0.02062 bar and 0.04241 bar respectively.The specific heat of air and water vapour respeetively are 1.005 and 1.88 kJ/kgK and the latent heat of vaporization water of 0°C is 2500 kJ/kg. The specific humidity (kg/kg of dry air) and enthalpy (kJ/kg of dry air) of this moist air respectively, area)0.01051, 52.64b)0.01291, 63.15c)0.01481, 78.60d)0.01532, 81.40Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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