Insulation thickness ( inch ) |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
Hilti insulation fastener |
X-IE-G 25 |
X-IE-G 50 |
X-IE-G 75 |
X-IE-G 100 |
X-IE-G 120 |
X-IE-G 150 |
X-IE-G 180 |
X-IE-G 200 |
|
Thermal conductivity λ [ W / mK ] |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
|
Thermal resistance R [ m 2 K / W ] |
0.85 |
1.69 |
2.54 |
3.39 |
4.23 |
5.08 |
5.93 |
6.77 |
|
Thermal transmittance U [ W / m 3 K ] |
1.181 |
0.591 |
0.394 |
0.295 |
0.236 |
0.197 |
0.169 |
0.148 |
|
Point thermal transmittance x [ W / K ] |
0.002 |
0.002 |
0.002 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
|
Uc = U + n * x [ W / m 2 K ] for n = 1 |
1.183 |
0.593 |
0.396 |
0.296 |
0.237 |
0.198 |
0.170 |
0.149 |
|
Thermal efficiency = U / Uc |
99.8 % |
99.7 % |
99.5 % |
99.7 % |
99.6 % |
99.5 % |
99.4 % |
99.3 % |
|
λ |
Thermal conductivity [ W / mK ] |
||||||||
R |
Thermal resistance [ m 2 K / W ], R = d / λ with d = thickness of inslation or component |
||||||||
U |
Thermal transmittance [ W / m 3 K ] |
||||||||
Up = x |
Point thermal transmittance x [ W / K ] per single fastener |
||||||||
Uc |
Corrected thermal transmittance [ W / m 2 K ] |
Insulation thickness t I [ mm ] 1 | ||||||||
25 / 30 |
40 |
50 |
60 |
70 |
75 |
80 |
90 |
|
h ET
= 12-19 mm
x min
[ mm ]
|
3 |
14 |
24 |
34 |
44 |
49 |
54 |
64 |
x max
[ mm ]
|
10 |
21 |
31 |
41 |
51 |
56 |
61 |
71 |
Insulation thickness t I [ mm ] 1 | ||||||||
100 |
120 |
130 |
140 |
150 |
160 |
180 |
200 |
|
h ET
= 12-19 mm
x min
[ mm ]
|
74 |
94 |
104 |
114 |
124 |
134 |
154 |
174 |
x max
[ mm ]
|
81 |
100 |
111 |
121 |
131 |
141 |
161 |
181 |