HRS AS Series: Annular space corrugated tube heat exchanger.
The triple tube or annular space heat exchanger is used for heat transfer applications with viscous fluids. It consists of three concentric tubes. Product flows through the annulus between tubes 2 and 3. The media fluid flows in the other two channels. The product is therefore heated or cooled from both sides. Corrugated tubes are used to increase heat transfer rates. The result is a highly efficient heat exchanger for difficult heat transfer applications.
Applications.
- Medium to high viscosity fluids.
- Fluids containing fibres or small particulates.
- Food applications, industrial applications.
Materials.
- Service side: AISI 304 stainless steel.
- Product side: AISI 316L stainless steel.
Connections.
- Service side: Flanged.
- Product side: Clamp.
Finishing.
- Externally polished.
- Product side: roughness < 0,8 microns.
Design conditions.
- Service side: 10 barg / 150 °C.
- Product side: 10 barg / 150 °C.
An expansion bellow is fitted in the outer shell for absorbing the differential expansion between the shell and the second tube.
The innermost tube is removable, which allows for inspection of the product annulus.
For large duties, multiple units can be interconnected and mounted in a frame.
| Model | Length (m) | Surface area (m2) | Shell side connection | Tube side connection | Max flow shellside (m3/hr) | Max flow tubeside (m3/hr) | Volume shellside (l) | Volume tubeside (l) |
|---|
| AS 76/51/25 | 3,0 - 6,0 | 1,4 | DN40 | 1" | 20 | 4 | 15,6 | 7,8 |
| AS 104/76/51 | 3,0 - 6,0 | 2,4 | DN65 | 2" | 45 | 16 | 30,5 | 13,1 |
| AS 129/104/76 | 3,0 - 6,0 | 3,4 | DN80 | 2,5" | 70 | 25 | 47,9 | 19,8 |
| AS 154/129/104 | 3,0 - 6,0 | 4,4 | DN80 | 3" | 95 | 34 | 74,7 | 22,7 |
The surface area and volumes shown are for 6 meter length models.