Thermal Expansion in Open Installation
Since TECHNO GREEN & TECHNO UV pipes must have enough space to expand, an expansion control must is much needed for straight and long pipes. TECHNO GREEN & TECHNO UV- pipes for cold water and heating plants makes this possible.
Expansion Co-Efficient:
- For Glass fiber Reinforced PP-R pipe: α = 0,05 mm/mK
- For Standard PP-R Pipe: α = 0,15 mm/mK
Calculation of Change in Length:
∆L = α x L x ∆T
Where,
- ∆L = Change in length in mm
- L = Length of pipe
- ∆T = The difference between installation & Working Temperature
COMPARISON PPR & PPR-GF (Thermal Expansion)
| Description | PPR | PPR-GF | |
|---|---|---|---|
| L | Pipe length in meter | 10 | 10 |
| α | Linear expansion coefficient | 0.15 | 0.05 |
| Ti | Temperature installation (°C) | 30 | 30 |
| Tw | Temperature working (°C) | 70 | 70 |
| ∆T | Ti – Tw | 40 | 40 |
| ∆L | Change in length (α x L x ∆T) | 60 | 20 |
From the above comparison the value ∆L reduced 3 times comparing with the normal PPR Pipes
Gas End Cap
Description
INTRODUCTION
TECHNO Gas End Cap
TEXT To come
MAIN ADVANTAGES
of The Techno Gas PE 80 Pipes & Fittings
01
Suitable for Natural Gas, Meter and LPG/Propane Systems.
02
High Hardness & Excellent Ductility
03
The ability to Roll long Pipe lengths.
04
High Resistance to slow crack propagation.
05
Highly flexible and light in weight.
06
Resistant to fast spreading cracks.
07
The inner surface is smooth.
08
Balance in hardness and durability.
09
Resistant to Ultraviolet Rays.
10
Reliable and suitable for underground environment.
11
Easy to transport, handle and place.
12
longer life.
SPECIFICATIONS
of the product
Technical Specification:
SDR 9
| Product Number | Product Description | Outer Diameter | T215150020 | Techno Gas End Cap 20mm | 20 |
|---|
Text to come:
- For Cold water application: 24.5 bar at 20°C
- For Hot water application : 8.1 bar at 70°C
- (Max 95°C for short peak)
This allowable operating pressure will be applicable for 50 years life span as per the standard DIN 8077 table 9 (SF-1.25)