An air conditioner operating at steady state takes in moist air at 28ºC, 1 atm and...
An air conditioner operating at steady state takes in moist air at 28ºC, 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 then passes through a heating unit, exiting at 24ºC, 1 atm and 40% relative humidity. Neglecting kinetic and potential energy effect. Sketch the process path of air on a Psychrometry Chart and determine: (a) The specific humidity of the air before entering the dehumidifier unit. (b) The dew point temperature and the specific humidity of the air at the exit of the heating unit. (c) The dry bulb and wet bulb temperature of the saturated moist air leaving the dehumidifier unit. (d) The mass flow rate of the air entering the dehumidifier unit. (e) The rate of condensate leaving the dehumidifier unit. (f) The rate of heat transfer into the air at the heating unit
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An air conditioner operating at steady state takes in moist air
at 28ºC, 1 atm and...
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...
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...
Moist air at 30°C, 1 atm, and 42% relative humidity enters an evaporative cooling unit operating...
Moist air at 30°C, 1 atm, and 42% 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. A. Determine the specific humidity of the entering moist air (to the heating section). (5 of 45 points. Please input your final answer...
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)...
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?...
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...
please solve it quickly ignore p=75 Problem 3 Part a P=57 Moist air enters the cooler...
please solve it quickly
ignore p=75
Problem 3 Part a P=57 Moist air enters the cooler of an air conditioning unit at 25 °C and a relative humidity of 70%. The cooled and dehumidified air leaves the cooler saturated at 18 °C. The temperature of condensed water is 18 °C. The pressure is constant at 101.325 kPa. The mass flow rate of the dry air is mda=67 kg/s. Use the psychometric chart to determine a) The humidity ratio at the...
Ouestion 2 (3 marks) Moist air enters the evaporator of an air conditioner at t. 26°C...
Ouestion 2 (3 marks) Moist air enters the evaporator of an air conditioner at t. 26°C and -70 %. After leaving the evaporator, the relative humidity o,100% and the temperature of the air t tpl-7°C, where tdp is the dew point temperature of the air entering the evaporator. Given: - The mass flow rate of the air passing through the evaporator: 1000kg of dry air/h - The mass flow rate of the air passing through the condenser: 2500kg of dry...
Moist air at 20C and 50% relative humidity enters a duct consisting of a heating section...
Moist air at 20C and 50% relative humidity enters a duct consisting of a heating section followed by an evaporative cooling process. The air is heated to 35C in the heating section. The air then enters the evaporative cooling section where liquid water is injected into the moist air. The moist air exits the evaporative cooling section at 60% relative humidity. A. Determine the specific humidity at the exit of the heating section. (5 of 45 points. Please input your...
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...
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...
Moist air at 30°C, 1 atm, and 42% 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. A. Determine the specific humidity of the entering moist air (to the heating section). (5 of 45 points. Please input your final answer...
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)...
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...
please solve it quickly
ignore p=75
Problem 3 Part a P=57 Moist air enters the cooler of an air conditioning unit at 25 °C and a relative humidity of 70%. The cooled and dehumidified air leaves the cooler saturated at 18 °C. The temperature of condensed water is 18 °C. The pressure is constant at 101.325 kPa. The mass flow rate of the dry air is mda=67 kg/s. Use the psychometric chart to determine a) The humidity ratio at the...
Ouestion 2 (3 marks) Moist air enters the evaporator of an air conditioner at t. 26°C and -70 %. After leaving the evaporator, the relative humidity o,100% and the temperature of the air t tpl-7°C, where tdp is the dew point temperature of the air entering the evaporator. Given: - The mass flow rate of the air passing through the evaporator: 1000kg of dry air/h - The mass flow rate of the air passing through the condenser: 2500kg of dry...
Moist air at 20C and 50% relative humidity enters a duct consisting of a heating section followed by an evaporative cooling process. The air is heated to 35C in the heating section. The air then enters the evaporative cooling section where liquid water is injected into the moist air. The moist air exits the evaporative cooling section at 60% relative humidity. A. Determine the specific humidity at the exit of the heating section. (5 of 45 points. Please input your...
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...
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