b) Atmospheric air at a pressure of I atm and dry-bulb temperature of 25 C has...
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b) Atmospheric air at a pressure of I atm and dry-bulb temperature of 25 "C has a relative humidity of 60 %. By using the psychrometric chart, determine the wet-bulb temperature, C, the specific humidity, g water vapor/kg dry air, the enthalpy, kJ/kg dry air, x the dew-point temperature, "C and the specific volume, m/kg dry air. ji) (5 marks) c) Air at pressure of 1 atm, temperature of 28 C and relative humidity of 60 % enters an insulated duct with volume flow rate of 6.0 m/min. The air is cooled by a cooling coil in the duct to temperature of 23C. By using the psychrometric chart provided, 23 show the path of this process on the chart, determine the relative humidity of the air at the duct outlet, %, determine the dew-point temperature of the air at the duct outlet, "C, determine the specific humidity of the air at the duct outlet, g water vapor/kg dry air, and determine the rate of heat transfer from the air to the cooling coil, kW. ii) iii) iv). b) Atmospheric air at a pressure of I atm and dry-bulb temperature of 25 "C has a relative humidity of 60 %. By using the psychrometric chart, determine the wet-bulb temperature, C, the specific humidity, g water vapor/kg dry air, the enthalpy, kJ/kg dry air, x the dew-point temperature, "C and the specific volume, m/kg dry air. ji) (5 marks) c) Air at pressure of 1 atm, temperature of 28 C and relative humidity of 60 % enters an insulated duct with volume flow rate of 6.0 m/min. The air is cooled by a cooling coil in the duct to temperature of 23C. By using the psychrometric chart provided, 23 show the path of this process on the chart, determine the relative humidity of the air at the duct outlet, %, determine the dew-point temperature of the air at the duct outlet, "C, determine the specific humidity of the air at the duct outlet, g water vapor/kg dry air, and determine the rate of heat transfer from the air to the cooling coil, kW. ii) iii) iv).
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Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
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