CENGEL'S 9TH EDITION OF THERMODYNAMICS:
9th Edition
ISBN: 9781260917055
Author: CENGEL
Publisher: MCG
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Chapter 14.7, Problem 38P
Atmospheric air at a pressure of 1 atm and dry-bulb temperature of 30°C has a relative humidity of 80 percent. Using the psychrometric chart, determine (a) the wet-bulb temperature, (b) the humidity ratio, (c) the enthalpy, (d) the dew-point temperature, and (e) the water vapor pressure.
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Moist air at 35 °C and 70% relative humidity, passing through an evaporator of a refrigeration system and cooling to 20 °C. What is the relative humidity of cooled air?
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8. Specific humidity of the mixture (point
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9. Enthalpy of the mixture (point 3) in
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- A tank contains 22 kg of dry air and 0.2 kg of water vapor at 30 °C and 91 kPa total pressure. Determine (1) the specific humidity. (2) the relative humidity. (3) the volume of the tank.arrow_forward(2) Moist air at a dry bulb temperature of 25°C has a relative humidity of 50 per cent when the barometric pressure is 101.4 kPa. Determine (a) the partial pressures of water vapor and dry air, (b) the dew point temperature, (c) the specific humidity, (d) the specific volume, and (e) the enthalpy. Ans. (a) 1.5855 kPa, 99.81 kPa; (b) 13.9°C, (c) 0.00988 kg/kg, (d) 0.857 cu m/kg, (e) 50.32 kJ/kgarrow_forwardDefine the range of permissible values for the barometric pressure, relative humidity, and temperature in your environment.arrow_forward
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