–10 –5 0510
–10
0.75 0.80
–5 0 5 10 15 20
Dry Bulb Temperature, °C
Below 0°C Properties and Enthalpy Deviation Lines Are For Ice Humid Volume, m3/kg Dry Air
25 30 35 40
10 15 20 25
25 30 35 40
145140135130125120
35 40 45 50 550.033
0.032
0.031
0.030
0.029
0.028
0.027
0.026
0.025
0.024
0.023
0.022
0.021
0.020
0.019
0.018
0.017
0.016
0.015
0.014
0.013
0.012
0.011
0.010
0.009
0.008
0.007
0.006
0.005
0.004
0.003
0.002
0.001
0.00
115
110
105
100
95
90
85
80
75
70
65
60
55
50
Enthalpy At Saturation, kJ/kg Dry Air
45
0.85 0.90
45 50 55
Moisture Content, kg/kg Dry Air
–
1
.
0
E
n
t
h
a
l
p
y
D
e
v
i
a
t
i
o
n
k
J
/
k
g
D
r
y
A
i
r
10%
–1.2
0.95
–0.8
–0.6
–0.4
–0.2
–0.1
–0.05
+1.0
+0.8
+0.6
+0.4
+0.2
20%
30%
40%
60%
70%
80%
90%
50% Relative Humidity
30
25
20
15
10
5
0
–5
W
e
t
B
u
l
b
o
r
S
a
t
u
r
a
t
i
o
n
T
e
m
p
e
r
a
t
u
r
e
,
°
C
40
385
⬚⬚
2
Psychrometric chart—SI units. Reference states: H O (L, 0 C, 1 atm), dry air (0 C, 1 atm). (Reprinted with permission of Carrier
Corporation.)
Figure 8.4-1
