An air conditioner operating at steady state takes in moist air at 30 °C, 1 bar and a wet bulb temperature of 25
An air conditioner operating at steady state takes in moist air at 30 °C, 1 bar and a wet bulb temperature of 25 °C. The moist air is cooled in the dehumidifier unit and some of the water is removed. There is 10 tons of cooling in the dehumidifier (also called the evaporator of an air conditioner). The condensate and the saturated air stream discharging the section is at 10 °C The moist air is then heated in the heater section to 24°C, 1 bar. Use the psychometric chart
a) Find mass flow rate of the dry air.
b) Find the volume flowrate in m3/min.
c) Find the mas flow rate of the water condensing in the cooling section.
d) Calculate the Heat needed to increase the temp from 10 °C to 24°C.
e) What is the relative humidity at 24°C?
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An air conditioner operating at steady state takes in moist air at 30 °C, 1 bar and a wet bulb temperature of 25
QUESTION 1 [15 marks] Due: 5 August 2020 An air conditioner operating at steady state takes...
QUESTION 1 [15 marks] Due: 5 August 2020 An air conditioner operating at steady state takes in moist air at 28°C, 1 atm and 70% relative humidity. The moist air first passes over a cooling coil in the dehumidifier unit and some water vapor is condensed. The rate of heat transfer between the moist air and the cooling coil is 38.69 kW. Both saturated moist air and condensate streams exit the dehumidifier unit at the same temperature. The moist air...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below (as determined from the Cooling cols Air Condensate Property Estering Exiting | 2S Dry bulb temperature CC)-35 ℃ Wet bulb temperature ("C1-20℃ Eethalpy (h, kJ/kg dry air)$7.5 40.9 Absolute humidity (o, kg H-O/kg dry air) 0.0085 0 0062 0.882 Specific volume (m/kg)1 0.8850 The condensate leaves volume flow rate of the air returned to the workspace is 800 m3/min. Atmospheric pressure is 9 the...
Moist air at 300C and 50% RH enters a dehumidifier operating at steady state with a...
Moist air at 300C and 50% RH enters a dehumidifier operating at steady state with a volumetric flowrate of 280 m3/min. the moist air passes over the refrigerating coil and water condenses. The condensate leaves at 100C. Saturated moist air leaves in a separate stream at the same temperature. There is no significant loss of energy by heat transfer to the surroundings and the pressure remains constant at 1.013 bar. What is the rate of condensation of water in kg/min?...
3. Air at a dry bulb temperature of 40C and a wet bulb temperature of 20C...
3. Air at a dry bulb temperature of 40C and a wet bulb temperature of 20C is first heated in a heater to a dry bulb temperature of 90C. Then it is passed through a bed of apricot slices to dry them. The air exiting from the top of the apricot bed is at a dry bulb temperature of 60C. It is then passed through a dehumidifier to reduce its relative humidity to 10%. Clearly show the various paths of...
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...
Name: QUESTION 1 [25 Points] Moist air enters an air conditioning system at a dry bulb...
Name: QUESTION 1 [25 Points] Moist air enters an air conditioning system at a dry bulb temperature T., 30 'C and relative humidity фі80% and exits at a dry bulb temperature T2 179C and relative humidity ф2.50% as shown in the figure below. The condensate exits the system at 15 °C. The mass flow rate of the dry air is 2.5 kg/s. Assume the air is at atmospheric pressure P-101.3 kPa. Cooling coils T-17 C 0-50 % Pp:-6.282 kPa Ti-30...
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
Please answer the relative humidity A humidifier takes in moist air at 29 °C, 1 bar,...
Please answer the relative humidity
A humidifier takes in moist air at 29 °C, 1 bar, and 50% relative humidity with a volumetric flow rate of 13 m3/s. To increase the moisture of the air, liquid water at 40 °C is sprayed into the moist air witha flow rate of 22 kg/s. Some of the liquid water evaporates into the moist air stream and the rest drain:s out of the humidifier with a temperature of 26 °C and a mass...
Problem 2: A residential air-conditioner with an actual cooling capacity of 14.06 kJ/s (4 tons), cools and dehumidifies a steady stream of air flowing over the cooling coil. Actual states for the Ref...
Problem 2: A residential air-conditioner with an actual cooling capacity of 14.06 kJ/s (4 tons), cools and dehumidifies a steady stream of air flowing over the cooling coil. Actual states for the Refrigerant 134a are given Notice that the compressor efficiency is less than 100% and there are small pressure drops given for the heat exchangers. The coefficient of performance is 3.51 for the actual cycle. Changes in kinetic and potential energy are negligible. The warm indoor air temperature entering...
Please show work 11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity...
Please show work
11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity f 40 percent enters the cooling section of an air-conditioning system at a rate of 10 kg/s and is cooled to 18°C. Determine the volumetric flow rate of the air leaving the cooling section, the heat-transfer rate required for this process, and the entropy change of the air per unit mass of dry air. If the velocity of the airstream is not to exceed...
QUESTION 1 [15 marks] Due: 5 August 2020 An air conditioner operating at steady state takes in moist air at 28°C, 1 atm and 70% relative humidity. The moist air first passes over a cooling coil in the dehumidifier unit and some water vapor is condensed. The rate of heat transfer between the moist air and the cooling coil is 38.69 kW. Both saturated moist air and condensate streams exit the dehumidifier unit at the same temperature. The moist air...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below (as determined from the Cooling cols Air Condensate Property Estering Exiting | 2S Dry bulb temperature CC)-35 ℃ Wet bulb temperature ("C1-20℃ Eethalpy (h, kJ/kg dry air)$7.5 40.9 Absolute humidity (o, kg H-O/kg dry air) 0.0085 0 0062 0.882 Specific volume (m/kg)1 0.8850 The condensate leaves volume flow rate of the air returned to the workspace is 800 m3/min. Atmospheric pressure is 9 the...
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...
Name: QUESTION 1 [25 Points] Moist air enters an air conditioning system at a dry bulb temperature T., 30 'C and relative humidity фі80% and exits at a dry bulb temperature T2 179C and relative humidity ф2.50% as shown in the figure below. The condensate exits the system at 15 °C. The mass flow rate of the dry air is 2.5 kg/s. Assume the air is at atmospheric pressure P-101.3 kPa. Cooling coils T-17 C 0-50 % Pp:-6.282 kPa Ti-30...
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
Please answer the relative humidity
A humidifier takes in moist air at 29 °C, 1 bar, and 50% relative humidity with a volumetric flow rate of 13 m3/s. To increase the moisture of the air, liquid water at 40 °C is sprayed into the moist air witha flow rate of 22 kg/s. Some of the liquid water evaporates into the moist air stream and the rest drain:s out of the humidifier with a temperature of 26 °C and a mass...
Problem 2: A residential air-conditioner with an actual cooling capacity of 14.06 kJ/s (4 tons), cools and dehumidifies a steady stream of air flowing over the cooling coil. Actual states for the Refrigerant 134a are given Notice that the compressor efficiency is less than 100% and there are small pressure drops given for the heat exchangers. The coefficient of performance is 3.51 for the actual cycle. Changes in kinetic and potential energy are negligible. The warm indoor air temperature entering...
Please show work
11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity f 40 percent enters the cooling section of an air-conditioning system at a rate of 10 kg/s and is cooled to 18°C. Determine the volumetric flow rate of the air leaving the cooling section, the heat-transfer rate required for this process, and the entropy change of the air per unit mass of dry air. If the velocity of the airstream is not to exceed...
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