12
THERMAL INSULATION OF CLOTHING AND AMBIENT TEMPERATURE CONDITIONS FOR HEAT BALANCE
AT DIFFERENT DURATIONS OF EXPOSURE
Insulation
I
cler
m
2
*K/W
Wearer standing activity
75 W/m
2
Air speed
0.4 m/s
3 m/s
8h
1h
8h
1h
0.265
13
0
19
7
0.310
10
-4
17
3
0.390
5
-12
13
-3
0.470
0
-20
7
-9
0.540
-5
-26
4
-14
0.620
-10
-32
0
-20
THERMAL INSULATION OF CLOTHING AND AMBIENT TEMPERATURE CONDITIONS FOR HEAT BALANCE
AT DIFFERENT ACTIVITY LEVELS AND DURATIONS OF EXPOSURE (TABLE 2)
Insulation
I
cler
m
2
*K/W
Wearer moving activity
light 115 W/m
2
medium 170 W/m
2
Air speed
0.4 m/s
3m/s
0.4m/s
3m/s
8h
1h
8h
1h
8h
1h
8h
1h
0.265
3
-12
9
-3
-12
-28
-2
-16
0.310
-2
-18
6
-8
-18
-36
-7
-22
0.390
-9
-28
0
-16
-29
-49
-16
-33
0.470
-17
-38
-6
-24
-40
-60
-24
-43
0.540
-24
-45
-11
-30
-49
-71
-32
-52
0.620
-31
-55
-17
-38
-60
-84
-40
-61
