Mechanical Engineering University of Gaziantep

1. Appendix 1 | 929
•
5.0
1.0 1.5
0.8
0.7
Prepared by Center for Applied Thermodynamic Studies, University of Idaho.
0.36
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.0
Enthalpy
——————
Humidity ratio
Δh
—— Δ
=
ΔHS —— ΔHT
=
—Se—nsi—bl—e h—ea–t
Total heat
120
110
100
90
80
60
25 wet bulb temperature °C
20 30 40 50
Dry bulb temperature °C
0 10
70
—Se—nsi—bl—e h—ea–t
Total heat
ΔHS —— ΔHT
=
1.0 –•
–5.0
–2.0
0.0
2.0
4.0
–1.0
– 0.5
1.0
2.5
2.0
0.1
0.2
0.3
0.4
0.5
0.6
3.0
4.0
10.0
–0.2
•
–4.0
–2.0
0
Enthalpy (h) kilojoules per kilogram dry air
20
30
40
50
60
70
80
90
100
Saturation temperature °C
5
10
15
20
25
30
30
0.94
30
20
15
10
5
0
0.90
0.88
0.86
0.84
0.82
0.80
0.78
28
90%
80%
70%
60%
50%
40%
30%
20%
26
24
22
20
18
16
14
12
10
8
10% relative humidity
0.92 volume cubic meter per kilogram dry air
Humidity ratio () grams moisture per kilogram dry air
6
4
2
ASHRAE Psychrometric Chart No. 1
Normal Temperature
Barometric Pressure: 101.325 kPa
©1992 American Society of Heating,
Refrigerating and Air-Conditioning Engineers, Inc.
Sea Level
FIGURE A–31
Psychrometric chart at 1 atm total pressure.
Reprinted by permission of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA; used with permission.
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