10-kg moist air at the temperature of 24°C, the pressure of 100 kPa, and relative humidity of 90% is enclosed in a cylinder and piston assembly. The enclosed air is cooled down to the temperature of 1...
10-kg moist air at the temperature of 24°C, the pressure of 100 kPa, and relative humidity of 90% is enclosed in a cylinder and piston assembly. The enclosed air is cooled down to the temperature of 12°C at a constant pressure process (when piston can move freely). Determine a) at what temperature vapor starts to condense and b) the mass of condensed water during the process using the psychrometric chart.
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10-kg moist air at the temperature of 24°C, the pressure of 100 kPa, and relative humidity of 90% is enclosed in a cylinder and piston assembly. The enclosed air is cooled down to the temperature of 1...
11-35.A moist air mixture with a dry bulb temperature of 48°C, a relative humidity of 40...
11-35.A moist air mixture with a dry bulb temperature of 48°C, a relative humidity of 40 percent, and a total pressure of 160 kPa is contained in a rigid vessel having a volume of 1.65 m3. The air is cooled until the dry bulb temperature reaches 23°C. Determine the amount of heat transferred, the final pressure of the air, and the amount of water vapor condensed during the process.
Moist air at 24°C, 1 atm, and 35% relative humidity enters an evaporative cooling unit operating...
Moist air at 24°C, 1 atm, and 35% relative humidity enters an evaporative cooling unit operating at steady state consisting of a heating section followed by a soaked pad evaporative cooler operating adiabatically. The air passing through the heating section is heated to 45°C. Next, the air passes through a soaked pad exiting with 50% relative humidity. Using data from the psychrometric chart, determine: (a) the humidity ratio of the entering moist air mixture, in kg(vapor) per kg(dry air). (b)...
S5. A 0.5 kg sample of moist air is initially at 295 K, 100 kPa, and...
S5. A 0.5 kg sample of moist air is initially at 295 K, 100 kPa, and 70 % relative humidity is cooled to 278 K, while keeping the pressure constant. Determine: a) The initial humidity ratio b) The dew point temperature c) The amount of water vapor condensed d) Sketch the T-S diagram and show the initial and final states as well as the path
stream consisting of 130 m'/min of moist air at a rature of 8°C and a humidity ratio of 0.0015 kg(vapor)/ dry a...
stream consisting of 130 m'/min of moist air at a rature of 8°C and a humidity ratio of 0.0015 kg(vapor)/ dry air) is mixed adiabatically with a second stream 12 températ Kgl ting of 400 m3/min of moist air at 25°C and 40% relative humidity. The pressure is constant throughout at 1 bar. Using the psychrometric chart, determine (a) the humidity ratio and (b) the temperature of the exiting mixed stream, in °C
stream consisting of 130 m'/min of moist...
Exercise 3 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 29...
Exercise 3 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 29 C and a wet bulb temperature of 22°C. Using the psychrometric chart and the table for saturated vapor find the following air properties: Pr T- 40 a) the partial pressure of the water vapor b) humidity ratio c) relative humidity d) dew-point temperature e) specific volume ) enthalpy of moist air
Exercise 2 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 40°C...
Exercise 2 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 40°C and a wet bulb temperature of 320C. Using both the equations for the moist air properties and the psychrometric chart find: g) the partial pressure of the water vapor h) humidity ratio i) relative humidity j) dew-point temperature k) specific volume 1) enthalpy of moist air Insert the data and the results from the chart in the following table: Enthalpy Specific kJ/kg m/kg Humidity...
A moist air of 25 °C and 200 kPa with relative humidity of 50% is mixed...
A moist air of 25 °C and 200 kPa with relative humidity of 50%
is mixed with nitrogen of 25 °C and 200 kPa. Then, the mixture is
expanded through a turbine to 100 kPa. Assuming the turbine is
ideal, determine the minimum nitrogen and moist air mole ratio
(kmol N2/kmol moist air) that does not induce condensation within
the turbine. Assume specific heat ratios are same for water vapor,
dry air, and nitrogen as 1.4.
3. (10 points) A...
1 kg of atmospheric air initially at 30 ºc and 60% relative humidity is cooled slowly,...
1 kg of atmospheric air initially at 30 ºc and 60% relative humidity is cooled slowly, at a constant pressure of 100 kPa, to a final temperature of 5 ºc. a. What is the saturation pressure of water at the initial temperature? b. What is the partial pressure of water vapor (vapor pressure) at the initial condition? c. What is the partial pressure of dry air at the initial condition? d. What is the initial humidity ratio? e. What is...
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the...
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the piston is resting on a pair of stops, and the enclosed volume is 400 litres. The mass of the piston is such that a 200 kPa pressure is required to move it. The air is now heated until its volume has doubled. Sketch the process on a P-V diagram and determine (a) the mass of air and the final temperature, (b) the work done...
Problem 7 O/5 points (0%) Humid air at 1 atm, 42 °C dry bulb and 55 % relative humidity is cooled...
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%)...
11-35.A moist air mixture with a dry bulb temperature of 48°C, a relative humidity of 40 percent, and a total pressure of 160 kPa is contained in a rigid vessel having a volume of 1.65 m3. The air is cooled until the dry bulb temperature reaches 23°C. Determine the amount of heat transferred, the final pressure of the air, and the amount of water vapor condensed during the process.
Moist air at 24°C, 1 atm, and 35% relative humidity enters an evaporative cooling unit operating at steady state consisting of a heating section followed by a soaked pad evaporative cooler operating adiabatically. The air passing through the heating section is heated to 45°C. Next, the air passes through a soaked pad exiting with 50% relative humidity. Using data from the psychrometric chart, determine: (a) the humidity ratio of the entering moist air mixture, in kg(vapor) per kg(dry air). (b)...
S5. A 0.5 kg sample of moist air is initially at 295 K, 100 kPa, and 70 % relative humidity is cooled to 278 K, while keeping the pressure constant. Determine: a) The initial humidity ratio b) The dew point temperature c) The amount of water vapor condensed d) Sketch the T-S diagram and show the initial and final states as well as the path
stream consisting of 130 m'/min of moist air at a rature of 8°C and a humidity ratio of 0.0015 kg(vapor)/ dry air) is mixed adiabatically with a second stream 12 températ Kgl ting of 400 m3/min of moist air at 25°C and 40% relative humidity. The pressure is constant throughout at 1 bar. Using the psychrometric chart, determine (a) the humidity ratio and (b) the temperature of the exiting mixed stream, in °C
stream consisting of 130 m'/min of moist...
Exercise 3 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 29 C and a wet bulb temperature of 22°C. Using the psychrometric chart and the table for saturated vapor find the following air properties: Pr T- 40 a) the partial pressure of the water vapor b) humidity ratio c) relative humidity d) dew-point temperature e) specific volume ) enthalpy of moist air
Exercise 2 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 40°C and a wet bulb temperature of 320C. Using both the equations for the moist air properties and the psychrometric chart find: g) the partial pressure of the water vapor h) humidity ratio i) relative humidity j) dew-point temperature k) specific volume 1) enthalpy of moist air Insert the data and the results from the chart in the following table: Enthalpy Specific kJ/kg m/kg Humidity...
A moist air of 25 °C and 200 kPa with relative humidity of 50%
is mixed with nitrogen of 25 °C and 200 kPa. Then, the mixture is
expanded through a turbine to 100 kPa. Assuming the turbine is
ideal, determine the minimum nitrogen and moist air mole ratio
(kmol N2/kmol moist air) that does not induce condensation within
the turbine. Assume specific heat ratios are same for water vapor,
dry air, and nitrogen as 1.4.
3. (10 points) A...
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%)...
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