RADPOL offers an unique solution: full antidiffussion system in preinsulated TWIN pipes. Thanks to this solution the reduction of heat transfer loss equals even 15% within the period of the first 10 years of pipeline working. The application of RADPOL technology influences significantly the diminishing of heating pipe actual exploitation costs within the long term of is working.
RADPOL diffussion barrier keeps isolation thermal conductivity indicator at almost unchanged level during heating pipe exploitation. Due to this solution the heating pipe lifespan is prolonged and exceeds minimal exploitation period which is set in the PN-EN 253 for 30 years.
How is it possible?
The solution in which diffussion barrier is closed with EVOH between two layers of modified HDPE eliminates the barrier contact with humidity as well as protects the barrier from any mechanical damage which may happen during production and installation processes. The pre-insulated pipeline mechanical properties canting (in both axial and tangential directions) remains also unchanged
The wall of the RADPOL pre-insulated pipe protective jacket equipped in antdiffussion barrier is constructed of three layers.
Advantages of RADPOL’s technology with diffusion barrier
- Longer exploitation period of a district heating networks thanks to the stoppage of isolating layer degradation phenomenon
- Practically constant level of insulating properties within the whole district heating system exploitation period
- Significant diminishing of heat transfer losses, which in turn diminishes the amount of Energy needed for heat production as well as diminishing of the CO2 emission level to the atmosphere (diminishing of greenhouse effect)
- Possibility to deliver heat with good parameters at the longer distances
- Homogeneous technology standard for all heating network elements (pipes, fittings and couplers)
- Keeping high level of endurance parameters for pipe systems in case of canting (in axial as well as tangential direction)
Technical data:
| DN |
Steel pipe | Distance between carrier pipes | STANDARD insulation | Length | ||
| Outside diameter | Wall thickness | |||||
| Seamless | Welded | |||||
| dz (mm) | s (mm) | s (mm) | C (mm) | Dz (mm) | L (m) | |
| 20 | 26,9 | 2,6 | 2,6 | 19 | 125 | 6 |
| 25 | 33,7 | 2,6 | 2,6 | 19 | 140 | 6 |
| 32 | 42,4 | 2,9 | 2,9 | 19 | 160 | 6/12 |
| 40 | 48,3 | 2,9 | 2,9 | 19 | 160 | 6/12 |
| 50 | 60,3 | 2,9 | 2,9 | 20 | 200 | 6/12 |
| 65 | 76,1 | 2,9 | 2,9 | 20 | 225 | 6/12 |
| 80 | 88,9 | 3,2 | 3,2 | 25 | 250 | 6/12 |
| 100 | 114,3 | 3,6 | 3,6 | 25 | 315 | 6/12 |
| 125 | 139,7 | 4,0 | 3,6 | 30 | 400 | 6/12 |
| 150 | 168,3 | 4,5 | 4,0 | 40 | 450 | 6/12 |
| 200 | 219,1 | 6,3 | 4,5 | 45 | 560 | 6/12 |
Non-standard diameters and wall thicknesses not mentioned in the catalog – to order.
