A room contains ma = 100 kg of humid air at temperature t₁ = 25°C and relative humidity 1 = 70%. Determine the water vapour mass ratio and specific enthalpy of the humid air and then calculate the following (show all working): i. ii. iii. the mass of dry air; the enthalpy of the air; the mass of the water vapour.

A room contains ma = 100 kg of humid air at temperature t₁ = 25°C and relative humidity 1 = 70%. Determine the water vapour mass ratio and specific enthalpy of the humid air and then calculate the following (show all working): i. ii. iii. the mass of dry air; the enthalpy of the air; the mass of the water vapour.

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

What is the relative humidity when the temperature is 30 degrees centigrade (celcius) and the water vapor content is 14 g/kg? Show your calculation.
Determine the humidity ratio for air with a relative humidity of 40% and 25\deg C. Then determinethe change in specific enthalpy for this system if the humidity increases by 10%as well as the change in specific enthalpy for the system if the temperature increases by 10\deg C. Do this both using the psychrometic charts as well as using your steam tables.
What happens when the temperature of air with 80% relative humidity at 15°C is raised to 20°C The saturation water vapor pressure is 1.71 kPa at 15°C and 2.34 kPa at 20°C.
The temperature of the air-vapor mixture is at 30.5°C and it has a relative humidity of 50% when the barometric pressure is 101.325 kPa. Determine the degree saturation, %
Compute the enthalpy of air at 60 percent relative humidity and 34 deg.C (Psat = 5.318 kPa), when the barometric pressure is 110 kPa.
On a certain day, the temperature is 25.0ºC and the relative humidity is 90.0%. How many grams of water must condense out of each cubic meter of air if the temperature falls to 15.0ºC ? Such a drop in temperature can, thus,produce heavy dew or fog.
If the partial pressure of water is 3Mpa and the corresponding saturated pressure is 3.5 Mpa, determine its relative humidity and water activity.
Humid air at atmospheric pressure has a dry bulb temperature T_db=15℃ and a wet bulb temperature f=70% Add the point on the attached chart and complete the other properties of this humid air in the table below:
If the air temperature is 85°F, what is the water vapor pressure corresponding to a relative humidity of 55 percent and at 55°F with 25 percent relative humidity.
If moist air has a saturation humidity ratio of 0.016872 kg v/kg da at a pressure of 1.2 bar, what is the dew point temperature at this state? Note: ta- twb = tap for saturated air. Express your answer in °C.
Calculate the steam quality of a saturated liquid/saturated vapour mixture at 100°C with enthalpy 812 kJ/kg. Give three decimal figures in your answer
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: