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Comparison of C-THERM
(In order of increasing cost)
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| Type of Insulation (Relative Cost) | Depth Limitation, ft (m) |
Temperature Limitation, ºF (ºC) |
Preferred Lay Method | Typical K-Value, BTU/ft-ºF-hr (W/m-ºC) |
|---|---|---|---|---|
| Unfilled Polyurethane or Polyolefin (1) | None | 212 (100) |
Any Lay Method | 0.12 (0.20) |
| Polyolefin Foam(2) | 3,000 (900) |
212 (100) |
Any Lay Method | 0.10 (0.17) |
| C-THERM Syntactic Foam (3) | 10,000 (3,000) |
300 (150) |
Primarily S-Lay or J-Lay* |
0.07 (0.12) |
| Pipe-in-Pipe (4) |
5,000 (1,500) |
300 (150) |
Primarily S-Lay or J-Lay |
0.05 (0.09) |
| Note: Relative costs are based on estimates of total installed cost. * Syntactic foams are now being developed for reeled applications. |
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