given
T = 20o C ,
Td = 5o C
first finding the dew point
= [ 243.1 X ( ln(RH/100) + 17.6 T / 243.1 + T ) ] / [ 17.6 - ( ln(RH/100) + 17.6 T / 243.1 + T ) ]
RH = 37.5 %
Air pressure = 100 kPa Air temperature = 20 deg Wet-bulb (Dew Point) temperature = 16 degC Find: - Vapor pressure - Relative humidity, - Specific humidity, - Air density
Atmospheric air at 32°C and 70% relative humidity passes through a cooling section in an air-conditioning duct where the air is cooled below its dew point and some of the water is removed. The air then passes over a heating section where heat is added until the final temperature is 22°C and the relative humidity is 45%. Assume the process occurs at constant pressure of 1 atm. Using the psychrometric chart, determine: (a) The amount of water removed in the...
Problem 5: On a bitter cold, snowy morning, the air re and dew point of the outside air are -7 °C. If this air is brought indoors and warmed to 21 °C, with no change in vapor content, what is the relative humidity of the air inside the home? (3 points) Problem 5: On a bitter cold, snowy morning, the air re and dew point of the outside air are -7 °C. If this air is brought indoors and warmed...
Air contains methanol at 75% relative saturation at 1 atm total pressure and 25 degree C. a) Calculate the dew point b) Calculate the temperature required to condense 90% of the methanol as liquid if the total pressure remains constant
Please Make a clear answer. A sample of moist air has a relative humidity and dew point of 60% and 5 °C, respectively. Find the air dry bulb temperature and humidity ratio. Assume the sample exists at atmospheric pressure. (0.0056, 13 °C)
The temperature is 30° C and the dew point is 15°C. The partial pressure of water in the air is? The relative humidity is about?
Problem 7 O/5 points (0%) Humid air at 1 atm, 42 °C dry bulb and 55 % relative humidity is cooled at constant pressure to a temperature 9 °C below its dew-point temperature. Sketch the psychrometric diagram for the process and determine the heat transfer from the air o kJ/kg dry air Cooling coils T2 φ2 T1 ф! 101.3 kPa i H-4」+'Condensate Condensate removal Now Problem (resets attempts) Resets Remaining: 10 Attempts Remaining: 10 Submit Problem 7 O/5 points (0%)...
1.What are the relative humidity, humidity ratio, dew point, and enthalpy for a condition where the dry‐bulb temperature is 95 oF and the wet‐bulb temperature is 70 oF? 2.What are the relative humidity, enthalpy and humidity ratio of moist air with the dry bulb temperature of 26.5 oC and dew point of 15 oC?
Problem 6.14 Humidity and Condensation Air at 30.0% relative humidity is cooled isobarically at 1 atm absolute from 90.0°C to 35.0°C. a. Estimate the dew point and the degrees of superheat of the air at 90.0°C. Dew point: Degrees of superheat: doc b. How much water condenses (mol) per cubic meter of feed gas? (See Example 6.3-2) mol c. Suppose a sample of the 90.0°C air is put in a closed variable-volume chamber containing a mirror and the pressure is...
Air at 50% relative humidity is cooled isobarically at 1 atm absolute from 90⁰C to 25⁰C. a) Estimate the dew point and degrees of superheat of the air at 90⁰C. b) How much water condenses (mol) per cubic meter of feed gas? c) Suppose a sample of the 90⁰C air is put in a closed variable-volume chamber containing a mirror and the pressure is raised at constant temperature until a mist forms on the mirror. At what pressure (atm) would...