Thermgard
Thermgard is used in hotels, offices and hospitals to maintain the temperature of hot water pipework. It has a higher watts capacity than Icegard enabling it to maintain the temperatures between 55° and 100° C. Thermgard is also suitable for many applications including the refrigeration and petro chemicals industries, fuel oils, edible oils, paints, varnishes, resins, waxes and many other viscous materials.
Technical Description
Infroheat's electric heating tape is a parallel circuit tape heater producing a continuous series of heating zones, each approximately 1 metre long, thus providing a constant watts per metre along the entire length.
Though the tape may be terminated at any point, we recommend that the tape be terminated just past a connecting joint, thus minimising any cold zone.
PRODUCT DATA
| Product Ref | Volts ac | Watts/Metre | Heating Zone Length (mm) |
Max. Circuit Length (mtrs) |
|---|---|---|---|---|
| IHP20/120 | 110/120 | 20 | 1000 | 50 |
| IHP25/120 | 110/120 | 25 | 1000 | 40 |
| IHP20/230 | 220/230 | 20 | 800 | 110 |
| IHP25/230 | 220/230 | 25 | 1000 | 95 |
| IHP35/230 | 220/230 | 35 | 850 | 80 |
| IHP40/230 | 220/230 | 40 | 790 | 70 |
SPECIFICATIONS (Table 1)
| Heating element | Nickel Chromium |
| Conductor and size | Copper 1.2 mm2 |
| Inner construction | Silicone Rubber |
| Outer sheath (approx. dimensions) cross section | 6mm x 11.5mm |
| Maximum continuous exposure temperature | 200°C |
| Minimum continuous exposure temperature | -60°C |
| Approvals Standard | Manufactured to conform to BS 6351 Grade 22 (Highest level of mechanical and water resistance) |
(Table 2)
| Pipe Size Inch | (Nominal Bore) mm Insulation |
Temperatures up to 100°C thickness 25mm |
|---|---|---|
| 1/2 | 13 | 0.29 |
| 1 | 25 | 0.38 |
| 1 1/2 | 40 | 0.48 |
| 2 | 50 | 0.57 |
| 3 | 75 | 0.77 |
| 4 | 100 | 0.94 |
| 6 | 150 | 1.31 |
| 8 | 200 | 1.61 |
Choosing the Infroheat tape for your application
To assist you in selecting the correct tape for your requirements, follow these guide lines:
i) Establish the pipe size, required operating temperature and the lowest ambient temperature.
ii) Calculate the difference between the required temperature and the lowest ambient temperature (∆T).
Multiply by the relevant factor from table 2.
Example
Pipe size = 3 inch
Insulation thickness = 25 mm
Lowest expected temperature = - 5° C
Operating temperature required = + 40° C
∆T = 40° C - (-5° C) = 45° C
Multiply factor for 3" pipe from table 2 is 0.77
Heat loss per metre of pipe = 45 x 0.77 = 34.65 W/M
So the suitable tape for the above application will be Thermgard IHP 35/230 Straight traced along the pipe.
