Homework Answers
Q3. Answer:- Data calculated using the psychrometric chart are:-
1. 0.01219 kJ/kg.
2. 22.95°C.
3. 0.895 m3/kg.
4. 16.58°C.
5. 67.49kJ/kg.
6. Solution pic attached.
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Q3/ For humid air at (37'C) and (30%) relative humidity fill the following blanks...
QUESTION 4 Air at 25 C° and 1 atm has a relative humidity of 20%. Using...
QUESTION 4 Air at 25 C° and 1 atm has a relative humidity of 20%. Using the psychrometric chart, the absolute humidity is the wet bulb temperature is , dew point is , and humid volume is Note: Take care of units (write the unit)
Use a psychrometric chart to determine the properties of air under different conditions. 1-Find the properties...
Use a psychrometric chart to determine the properties of air under different conditions. 1-Find the properties of air at 70 degrees F and 50% relative humidity. Find humidity ratio, wet bulb temperature, dew point, enthalpy, and specific volume. 2-Find the properties of air at 55 degrees F and 30% relative humidity. Find humidity ratio, wet bulb temperature, dew point, enthalpy, and specific volume. 3-Air enters a furnace at a dry bulb temperature of 60 degrees F and 50% relative humidity...
The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling...
The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling coil at a rate of 45m3/min. The air cooling to the saturated state and leaving at a temperature of 16 °C. Determine: a- Specific humidity at each state. b- Wet bulb and dew point temperatures at the final state c- Final relative humidity. d- Mass of water condensed. e- Rate of heat removed from the air in kW. f- Show the process on Psychrometric...
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...
1. Wet solids pass through a continuous dryer. Hot dry air enters the dryer at a...
1. Wet solids pass through a continuous dryer. Hot dry air enters the dryer at a rate of 400 kg/min and mixes with the water that evaporates from the solids. Humid air leaves the dryer at 50°C containing 2.44 wt% water vapor and passes through a condenser in which it is cooled to 10°C. The pressure is constant at 1 atm throughout the system. a. At what rate (kg/min) is water evaporating in the dryer? b. Use the psychrometric chart...
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
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%)...
Please show clear working Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT...
Please show clear working
Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT and 50% RH is to be mixed with 800 m3/min of recirculated air at 22 °C DBT and 10 °C wet bulb temperature. Determine the (1) enthalpy, (2) specific volume, (3) relative humidity, (4) dry-bulb temperature and (5) dew point temperature of the mixture. Ans. [(1) 38.24 kJ/kg, (2) 0.849 m/kg (3) 29%, (4) 24.2 °C, (5) 5°C]
Figure 8.4-1 is provided: Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached...
Figure 8.4-1 is provided:
Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached copy), estimate the following physical properties of humid air at latm, 40 °C and having a relative humidity hr =20 %. (a) Dew point (Tdp), Wet bulb Temperature (Twb). What is the difference between the two temperatures? (b) Specific enthalpy of the humid air, and the volume of 10kg of the humid air. (C) If the air is humidified in an adiabatic spray tower,...
seperation process , show graph Questi (aho Question: An atmospheric direct heat dryer is to operate...
seperation process , show graph
Questi (aho Question: An atmospheric direct heat dryer is to operate with air containing water vapors entering at partial pressure of water i.e. 0.028 atm and vapor pressure of water i.e. 1.56 atm. From the psychrometric chart and relationships, determine the followings: 1) Wet bulb temperature (°F) Dew point Temperature (°F) Enthalpy (Btu per pound of dry air) Dry bulb temperature (°F) Humid volume (ft) from (both relationship and psychrometric chart) Humidity (grains of moisture...
QUESTION 4 Air at 25 C° and 1 atm has a relative humidity of 20%. Using the psychrometric chart, the absolute humidity is the wet bulb temperature is , dew point is , and humid volume is Note: Take care of units (write the unit)
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...
1. Wet solids pass through a continuous dryer. Hot dry air enters the dryer at a rate of 400 kg/min and mixes with the water that evaporates from the solids. Humid air leaves the dryer at 50°C containing 2.44 wt% water vapor and passes through a condenser in which it is cooled to 10°C. The pressure is constant at 1 atm throughout the system. a. At what rate (kg/min) is water evaporating in the dryer? b. Use the psychrometric chart...
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
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%)...
Please show clear working
Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT and 50% RH is to be mixed with 800 m3/min of recirculated air at 22 °C DBT and 10 °C wet bulb temperature. Determine the (1) enthalpy, (2) specific volume, (3) relative humidity, (4) dry-bulb temperature and (5) dew point temperature of the mixture. Ans. [(1) 38.24 kJ/kg, (2) 0.849 m/kg (3) 29%, (4) 24.2 °C, (5) 5°C]
Figure 8.4-1 is provided:
Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached copy), estimate the following physical properties of humid air at latm, 40 °C and having a relative humidity hr =20 %. (a) Dew point (Tdp), Wet bulb Temperature (Twb). What is the difference between the two temperatures? (b) Specific enthalpy of the humid air, and the volume of 10kg of the humid air. (C) If the air is humidified in an adiabatic spray tower,...
seperation process , show graph
Questi (aho Question: An atmospheric direct heat dryer is to operate with air containing water vapors entering at partial pressure of water i.e. 0.028 atm and vapor pressure of water i.e. 1.56 atm. From the psychrometric chart and relationships, determine the followings: 1) Wet bulb temperature (°F) Dew point Temperature (°F) Enthalpy (Btu per pound of dry air) Dry bulb temperature (°F) Humid volume (ft) from (both relationship and psychrometric chart) Humidity (grains of moisture...
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