Carta psicometrica

1. -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130
DRY BULB TEMPERATURE - °F
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
10 15 20 25 30
35
40
45
50
55
55
60
60
65
70
ENTHALPY-BTUPERPOUNDOFDRYAIR
0
5
10
15
20
25
30
35
40
45
50
ENTHALPY-BTUPERPOUNDOFDRYAIRSATURATIONTEMPERATURE-°F
-5
0
0
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45 50
50 55
55 60
60
65
65
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70
75
75
80
80
85
W
ET
BULB
TEM
PERATURE
- °F
85
90
15%
25%
2%
4%
6%
8%
10% RELATIVE HUMIDITY
20%
30%
40%
50%
60%
70%
80%
90%
12.0
12.5
13.0
13.5
14.0SPECIFICVOLUMEft³/lbOFDRYAIR
14.5
15.0
15.5
HUMIDITYRATIO-GRAINSOFMOISTUREPERPOUNDOFDRYAIR
PSYCHROMETRIC CHART
BAROMETRIC PRESSURE 29.921 inches of Mercury
Linric Company Psychrometric Chart, www.linric.com
.1
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.9
1
1.1
1.2
1.3
VAPORPRESSURE-INCHESOFMERCURY
-20
0
10
20
25
30
35
40
45
50
55
60
65
70
75
80
85
DEWPOINT-°F