Q3: Air enters an evaporative cooler at 1 atm, 36 °C, and 20 percent relative humidity at a rate of 4 m³/min, and it leaves with a relative humidity of 90 percent. Determine (a) the exit temperature of the air and (b) the required rate of water supply to the evaporative cooler. كمية الماء الاحي أعاد إلى الكة

Q3: Air enters an evaporative cooler at 1 atm, 36 °C, and 20 percent relative humidity at a rate of 4 m³/min, and it leaves with a relative humidity of 90 percent. Determine (a) the exit temperature of the air and (b) the required rate of water supply to the evaporative cooler. كمية الماء الاحي أعاد إلى الكة

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

In an air conditioning system, return air at 24°C dry-bulb temperature and 40% relative humidity is mixed with outdoor ambient air at 30°C dry-bulb temperature and 70% relative humidity. The dry air mass flow rate of outdoor air is 20% of the supply air mass flow rate to the space. The pressure is constant at 101.3 kPa.-Calculate the dry-bulb temperature of the supply air in °C.-The humidity ratio of the supply air.-The enthalpy of supply air in kJ/kg.
Humid air at 40°C and 20% relative humidity enters an adiabatic spray chamber at a rate of 100 m³/hr. The air is adiabatically humidified to 50% relative humidity. Use humidity charts to find the following: • Outlet temperature of the humidified air • Rate of water evaporation in the spray chamber Water In (Liq) Cool Air T= ? Out h, = 50% V = 100 m3/hr Hot Air In T= 40°C h, = 20% Water Out (Liq)
Pls. Anwer my quistion.. Thank you! Air enters an air-conditioning system that uses refrigerant-134a at 30OC and 70 percent relative humidity at a rate of 4 m3 /min. The refrigerant enters the cooling section at 700 kPa with a quality of 20 percent and leaves as saturated vapor. The air is cooled to 20OC at a pressure of 1 atm. Determine (a) the rate of dehumidification in kg/min (b) the refrigerating Effect in KJ/min (c) the mass flow rate of the refrigerant in kg/min
Use the concept of evaporative cooling to explain how air’s relative humidity is measured using a sling psychrometer
After reaching saturation, if the room continues to cool to a temperature of 1.2 \deg C, how many grams of water vapor (per kg of air) will have had to condense out of the air to maintain a relative humidity of 100 %? g/Kg
Required information Problem 14.095 - Evaporative Swamp Cooler NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Air enters an evaporative cooler at 1 atm, 40°C, and 20 percent relative humidity at a rate of 7 m³/min, and it leaves with a relative humidity of 90 percent. Use data from the psychrometric chart. 1 atm 40°C 20% Air Water Mw Humidifier € £2=90% Problem 14.095.a - Evaporative Swamp Cooler Determine the exit temperature of the air. The exit temperature of the air is °C.
Air enters an evaporative cooler at 1 atm, 36 °C and 20 % relative humidity at a rate of 10 m³/min and it leaves with a relative humidity of 90 %. Determine: 1. The exit temperature of the air. 2. Required rate of water supply to the evaporative cooler.
1. Water at 30 °C flows into a cooling tower at the rate of 1.15 kg per kg air. Air enters the tower at the dbt of 20 °C and a relative humidity of 60 % and leaves it at a dbt of 28 °C and 90% relative humidity. Makeup water is supplied at 20 °C. Atmospheric pressure remains at 1 atm. Determine (a) the temperature of water leaving the tower, (b) the fraction of water evaporated, and (c) the approach and range of the cooling tower. Draw the temperature relationship.
Air enters a window air conditioner at 1 atm, 32oC, and 65 percent relative humidity ata rate of 80 kg/min, and leaves at 20oC with 50 percent relative humidity. Determinethe cooling capacity of the A.C. in tons and the moisture removal from the air in kg/s.
A flow of moist air at 45ºC, 20% relative humidity with a flow rate of 0.2 kg/s is mixed with a flow of moist air at 25ºC and absolute humidity of ω = 0.018 kg/kg of air with a rate of 0.3 kg/s dry air. The mixing takes place in an air duct at 100 kPa, and there is no significant heat transfer. After the mixing, there is heat transfer to a final temperature of 40ºC. Find the temperature and relative humidity after mixing. Find the heat transfer and the final relative humidity. Use the provided psychrometric chart. Label all states clearly on the psychrometric chart and show all thermodynamic processes.You must upload the psychrometric chart.
Calculate the specific volume relative humidity, enthalpy, and degree of saturation of dry air when the following conditions prevail: t = kg/kg, and P. = 101.3 kPa, check and provide psychrometric chart and indicate the wet-bulb and dew-point temperatures. 30°C, W = 0.015 %D t your answer using
Air with a total pressure of 101.3 kPa, a temperature of 12 °C and a relative humidity of 75% is both heated and humidified by water vapor. The exit conditions from the system are 25°C temperature and 75% relative humidity. If the flow rate of dry air is 1.9 kg/s, how much kg/s should the flow of steam be given to the air?