An air conditioner cools 226 m^3/min of humid air at 36 oC and 98% relative humidity...
An air conditioner cools 226 m^3/min of humid air at 36 oC and 98% relative humidity to 10 oC. Calculate the rate of condensation of water in kg/hr and the cooling requirement in kW.
(Ans: 442 kg/hr, 417 kW)
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An air conditioner cools 226 m^3/min of humid air at 36 oC and
98% relative humidity...
Air enters a window air conditioner at 1 atm, 30 oC, and 80 percent relative humidity...
Air enters a window air conditioner at 1 atm, 30 oC, and 80 percent relative humidity at a rate of 10 m3/min, and it leaves as saturated air at 15 oC. Part of the moisture in the air that condenses during the process is also removed at 15 oC. Use this information to answer the following question. choose the nearest value given in (a) – (e). The heat removal rate (kW) is
An air conditioner removes hot air at 35 °C and 70 % relative humidity from the...
An air conditioner removes hot air at 35 °C and 70 % relative humidity from the atmosphere and delivers cool air at 20 °C and a constant pressure of 1 atm. A. Using the psychrometric chart, determine the fraction of water that condenses from the humid air. B. Determine the rate at which heat must be removed from the system in order to deliver 20m3/min of humid air to a home.
30 min Q3/ For humid air at (37'C) and (30%) relative humidity fill the following blanks...
30 min
Q3/ For humid air at (37'C) and (30%) relative humidity fill the following blanks with a suitable answers by using the Psychrometric chart:- S 1. The absolute humidity 2. The wet-bulb temperature 3. The humid volume 4. The Dew point 5. The specific enthalpy 6. The amount of water in (275 m) of air at these conditions - (15 Marks)
Find the densities of humid air at 25 oC DBT when it is at 20% relative...
Find the densities of humid air at 25 oC DBT when it is at 20% relative humidity and then when it is at 23 oC DBT and standard atmospheric pressure. [Calculate by Equation first considering standard barometric pressure, 1 kg of dry air and R = 287.1 then use the psychrometric chart].
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...
In a device to produce drinking water, humid air at 32°C, 90% relative humidity and 1...
In a device to produce drinking water, humid air at 32°C, 90% relative humidity and 1 atm is cooled to 5°C at constant pressure.. If the duty on the unit is 2,200 kW of heat is removed from the humid air, how much water is produced and what is the volumetric flow rate of air entering the unit? Data: Air at 32°C has H- o.204 kJ/mol and at 5°C has H 576 kJ/mol H of steam can be found on...
Q.3 Outside air at 90°F, 1 atm, and 95% relative humidity with a flow rate of...
Q.3 Outside air at 90°F, 1 atm, and 95% relative humidity with a flow rate of 4000 cfm is blown over an evaporator of a refrigeration system and exits at 75°F and 60% relative humidity. The refrigeration system has operating with the COP of 2.5. Determine (a) the amount of cooling provided by the evaporator Btu/hr (b) the amount of water condensed in the evaporator, lbm/hr and (c) the power required by the compressor of the refrigerator in kW. 1...
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...
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water...
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water evaporates from the surface of a lake at a rate of 0.20 kg/h per square metre of water surface area. The temperature of water is 25°C. (a) Determine the mass transfer coefficient. (10 marks) (b) Determine the convective heat transfer coefficient. (10 marks) (c) Determine the net heat loss (in W/m2) from the lake. (5 marks) The specific volume of water vapour at 25°C...
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%)...
30 min
Q3/ For humid air at (37'C) and (30%) relative humidity fill the following blanks with a suitable answers by using the Psychrometric chart:- S 1. The absolute humidity 2. The wet-bulb temperature 3. The humid volume 4. The Dew point 5. The specific enthalpy 6. The amount of water in (275 m) of air at these conditions - (15 Marks)
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...
In a device to produce drinking water, humid air at 32°C, 90% relative humidity and 1 atm is cooled to 5°C at constant pressure.. If the duty on the unit is 2,200 kW of heat is removed from the humid air, how much water is produced and what is the volumetric flow rate of air entering the unit? Data: Air at 32°C has H- o.204 kJ/mol and at 5°C has H 576 kJ/mol H of steam can be found on...
Q.3 Outside air at 90°F, 1 atm, and 95% relative humidity with a flow rate of 4000 cfm is blown over an evaporator of a refrigeration system and exits at 75°F and 60% relative humidity. The refrigeration system has operating with the COP of 2.5. Determine (a) the amount of cooling provided by the evaporator Btu/hr (b) the amount of water condensed in the evaporator, lbm/hr and (c) the power required by the compressor of the refrigerator in kW. 1...
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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