One of the major concern in cold weather condition is the condensation of the moisture present in the air. Usually the temperature inside a house is not uniform and the condensation frequently takes place at the region of lower air temperature especially on the inner surfaces of the windows. If the house contains air at 15°C and relative humidity of 75%, what minimum temperature should be maintained to avoid the condensation?

One of the major concern in cold weather condition is the condensation of the moisture present in the air. Usually the temperature inside a house is not uniform and the condensation frequently takes place at the region of lower air temperature especially on the inner surfaces of the windows. If the house contains air at 15°C and relative humidity of 75%, what minimum temperature should be maintained to avoid the condensation?

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

QUESTION 2 Airflow of 4.5 ms at 1 atm, 10°C, and B0% relative humidty is conditioned to 25C and 50% relative humidity through heating and then injoction of saturatod water vapor100'C. What is the flow rate of water vapor added to air? (in kois) (Choloes: 0.0001, 0.0182. 0.0222. 0.0318, 0.0424) What is the heating power of eloctricty? (n ku) (Choices: 58.8, 70.1, 877, 116.9, 168.1) What is the relative humidity after the heating section? (n %) (Choices: 18.5, 32.2, 27.0, 20.1, 38.5)
An air-water vapor sample has a dew point temperature and a wet bulb temperature of 22°C and 30 °C respectively Estimate by the use of psychrometric chart the following: (i) Percent humidity (ii) (ii) Partial pressure of water vapor in a sample Dry bulb temperature and relative humidity (iv) Humid volume and humid heat
what is the reason that someone can feel comfortable in a room that consists of 20oC drybulb temperature and a wet bulb temperature of 15oC ? explain with some calculation if possible (a detailed answer will be appreciated )
An air flow of 15,000 m3/h at 16 ºC and 40% relative humidity, you want to humidify up to conditions of 24 ºC and 80% relative humidity. The make-up water is at 18ºC. Calculate the necessary heat to be applied to the spray water. The specific volume of air at the inlet is 0.852 m3/kg
Moist air contains 0.025 kg water vapour per cubic metre of themixture at 313 K and 101.3 kPa. Calculate the following: The absolute humidity of the air
If the specific humidity of an environment is 20 g / kg and the dry bulb temperature is 31oC, indicate the dew point temperature, relative humidity and wet bulb temperature of the air in the table below.
On a summer dya in Houston, the temperature is 25 degrees Celsius and the relative humidity is 76 percent. (a) What is the humidity? (b) To what temperature could the air be cooled before condensation would start to take place? (That is, what is the dew point?)
On a hot humid summer day, the air can be considered saturated steam at 950C. If you were to take an ice-cold beverage (40C) from the cooler, you would notice drop-wise condensation on the side of the can forming. What is the condensation heat transfer coefficient for the cold can? Assume the can is 12-cm tall and has a diameter of 8-cm.
Determine the air properties using the psychrometric chart (show solution manually) . Plot the given air properties in the chart make appropriate projections to determine the other air properties. Twb = 25°C , Tdp = 25°C
The air in a house is at 19°C, 59% relative humidity, and total pressure 89kPa. If air is cooled at constant pressure, the temperature at which moisture begins to codense is:
The air supplied to a room of a building in winter at Hamburg is to be 17 °C and have a percentage relative humidity of 60%. If the barometric pressure is 1.013bar, evaluate;i.the specific humidity,ii.the dew point under these condition,iii.the amount of vapor will be condensedif air at this condition is passed at the rate of 0.5 m3/s over a cooling coil which is at a temperature of 6 °Cand air leaving the coil is saturated.iv.Sketchthe process on the psychrometric chart on Figure Q3 (b)
Air at 330 K and its humidity is 0.005 is used to dry a wet solid up to its relative humidity reached to 70%, then reheated to 330 K and reused to drying again up to its relative humidity reached to 70%. The final dry-bulb and wet-bulb temperatures of air are 308 K and 303.5 K respectively 305 K and 303.5 K respectively 308 K and 300 K respectively 302 K and 297 K respectively