PH Chart

1. BAROMETRIC PRESSURE: 101.325 kPa
PSYCHROMETRIC CHART
NORMAL TEMPERATURE
SI Units
SEA LEVEL
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70
DRY BULB TEMPERATURE - °C
-30
-20
-10
0 10 20 30 40 50 60 70
80
90
100
110
120
130
140
150
150
160
160
170
170
180
180
ENTHALPY
-
KJ
PER
KILOGRAM
OF
DRY
AIR
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
E
N
T
H
A
L
P
Y
-
K
J
P
E
R
K
I
L
O
G
R
A
M
O
F
D
R
Y
A
I
R
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
VAPOR
PRESSURE
-
MM
OF
MERCURY
-10
-5
0
5
10
15
20
25
30
35
DEW
POINT
TEMPERATURE
-
°C
Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
SENSIBLE HEAT RATIO = Qs / Qt
SENSIBLE
HEAT
RATIO
=
Qs
/
Qt
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
1
5
%
2
5
%
2%
4%
6%
8%
RELATIVE
HUM
IDITY
10% RELATIVE HUMIDITY
20%
30%
40%
5
0
%
6
0
%
7
0
%
8
0
%
9
0
%
-30 -25 -20 -15
-15 -10
-10 -5
-5
0
5
5
10
10
15
15
20
20
25
25
30
30
35
W
ET
BULB
TEM
PERATURE
- °C
35
0
.7
6
0
.7
8
0
.8
0
0
.8
2
0
.8
4
0
.8
6
0
.8
8
V
O
L
U
M
E
-
C
U
B
IC
M
E
T
E
R
P
E
R
K
G
D
R
Y
A
IR
0
.9
0
0
.9
2
0
.9
4
0
.9
6
0
.9
8
1
.0
0
1
.0
2
HUMIDITY
RATIO
-
GRAMS
MOISTURE
PER
KILOGRAM
DRY
AIR
0
1.0 1.0
-
2.0
4.0
8.0
-8.0
-4.0
-
2
.
0
-
1
.
0
-
0
.5
-
0
.4
-0
.3
-0
.2
-0.
1
0.
1
0
.2
0
.
3
0
.
4
0.5
0.6
0.8
-4.6
-2.3
0.0
1
.
2
2.3
3
.5
4
.
7
7
.0
1
1
.7
-
SENSIBLE HEAT Qs
TOTAL HEAT Qt
ENTHALPY
HUMIDITY RATIO
h
W
BAROMETRIC PRESSURE: 101.325 kPa
PSYCHROMETRIC CHART
NORMAL TEMPERATURE
SI Units
SEA LEVEL
Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com
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