Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Humid air flows in a duct at atmospheric pressure. The dry bulb temperature and humidity ratio are 80℉ and ω=0.011 (lbm water)/(lbm dry air)
Add the point on the attached chart and complete the other properties of this humid air in the table below:
![Pressure: 29.921 inches of mercury
American Society of Heating.
and Air-Conditioning Engineers, Inc.
Sea Level
Sensible heat Qs
Total heat
br
15
35
0
30
=
1000
Enthalpy
Ah
Humidity ratio Aw
6
20
2
30
en
45
B
10
25
50
1.0
20
4.0
-4.0
-2.0
-1.0
45
8.
30
55
500-1000
$0.
60
Enthalpy, Btu per pound of dry air
65
SS.
40
15
Saturation temperature "F
70
60
45
90%
75
P
80%
70%
65.
60%
80
50%
70
50
40%
30%
85.
20%;
75
10% Relative humidity
25
20
8
90
85F Wet bulb temperature
3
18
3
15
18
=
va
E
028
026
024
022
020
-018
2-016
-.014
012
010
008
006
004
002
60
55
50
45
40
35
30
Humid air flows in a duct at
atmospheric pressure. The dry bulb
temperature and humidity ratio are
lbm water
80°F and w = 0.011
lbm dry air
Add the point on the attached chart
and complete the other properties
of this humid air in the table below:
h
V
Ø (%)
Btu
lb dry air
ft³
lb dry air
Tap [F] (Dew point
temperature)
Twb [F] (Wet bulb
temperature)](https://content.bartleby.com/qna-images/question/72d490d0-ea92-4353-8b1a-fc4847a9a9b3/2b53453d-2862-493e-a25b-9808f02b9a09/ex2y9n_processed.png)
Transcribed Image Text:Pressure: 29.921 inches of mercury
American Society of Heating.
and Air-Conditioning Engineers, Inc.
Sea Level
Sensible heat Qs
Total heat
br
15
35
0
30
=
1000
Enthalpy
Ah
Humidity ratio Aw
6
20
2
30
en
45
B
10
25
50
1.0
20
4.0
-4.0
-2.0
-1.0
45
8.
30
55
500-1000
$0.
60
Enthalpy, Btu per pound of dry air
65
SS.
40
15
Saturation temperature "F
70
60
45
90%
75
P
80%
70%
65.
60%
80
50%
70
50
40%
30%
85.
20%;
75
10% Relative humidity
25
20
8
90
85F Wet bulb temperature
3
18
3
15
18
=
va
E
028
026
024
022
020
-018
2-016
-.014
012
010
008
006
004
002
60
55
50
45
40
35
30
Humid air flows in a duct at
atmospheric pressure. The dry bulb
temperature and humidity ratio are
lbm water
80°F and w = 0.011
lbm dry air
Add the point on the attached chart
and complete the other properties
of this humid air in the table below:
h
V
Ø (%)
Btu
lb dry air
ft³
lb dry air
Tap [F] (Dew point
temperature)
Twb [F] (Wet bulb
temperature)
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- How do you calculate relative humidity (RH) when given actual vapor pressure and water vapor capacity. What is a dew point?arrow_forwardAir at 90○F and 20% relative humidity is cooled to 75○F. Assuming standard atmospheric pressure when the inlet flow rate is 1500 ft3/min, what amount of thermodynamic conditions are needed to achieve the resulting temperature?arrow_forwardOn a summer day in Houston, the temperature is 25 degrees Celsius and the relative humidity is 76 percent. What is the humidity? (kg/m3)arrow_forward
- A tank contains 21 kg of dry air and 0.3 kg of water vapour at 24°C and 100 kPa total pressure. Determine the humidity ratio, the relative humidity, and the volume of the tank. ( Ans: 0.0143 kgv/kgda, 75.3%, 18.31 m') Q 2:arrow_forwardInside a building, the temperature is −5°C, and the relative humidity is 31 percent. How much water vapor (in kg) is there in each cubic meter of air?arrow_forwardHumid air flows in a duct at atmospheric pressure. The temperature and relative humidity are T_db=34℃, T_wb=26℃. Add the point on the attached chart and complete the other properties of this humid air in the table below:arrow_forward
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