TUBULAR HEATER
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Cartridge Heaters
Pratik Heat Products Straight Elements can be supplied in either Stainless Steel or Incoloy with a nominal sheath diameter of 8.0mm and 11.0mm. All elements are fully annealed bending. Standard elements have a threaded terminal post which gives a cold section of approximately 40mm.
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| Volts | Approx.
Length mm In. |
Watts | Dia.
8.00 mm A B |
Watts | Dia.
11.00 mm A B |
|||
| 240 | 455 | 18 | 450 | 455 | 375 | 650 | 455 | 375 |
| 240 | 610 | 24 | 600 | 610 | 530 | 850 | 610 | 530 |
| 240 | 760 | 30 | 750 | 760 | 680 | 1000 | 760 | 680 |
| 240 | 915 | 36 | 1000 | 915 | 835 | 1250 | 915 | 835 |
| 240 | 1065 | 42 | 1200 | 1065 | 985 | 1500 | 1065 | 985 |
| 240 | 1220 | 48 | 1350 | 1220 | 1160 | 1750 | 1220 | 1160 |
| 240 | 1370 | 54 | 1500 | 1370 | 1290 | 2000 | 1370 | 1290 |
| 240 | 1525 | 60 | 1750 | 1525 | 1445 | 2250 | 1525 | 1445 |
Tabled above is our standard range of Tubular Heating Elements for ready use and quick reference.
| Sheating Materials | General Guide To Applications | Surface Loading W.p.s.i. |
| Copper | Water immersion (depending upon conditions e.g. water hardness) | 50-100 |
| Mild Steel | Casting into metal bodies. Air
Heating upto 200� to 250� C. Oil Immersion |
Based upon surface area of
parent body. 10-15 |
| Stainless Steel | Food Containers and Food Mfg.
Processes. Air Heating and Chemical Immersion. Suitable for Tem. upto 400� to 450� C. |
30 |
| Incoloy | Air Heating of temp. upto 450� to 600� C. | 30-40 |
| Inconel | Air Heating of Temp. upto 750� to 800� C. Chemically Corrosive Atmospheres. | 30-40 |
Generally for use in applications where the sheath temperature is not expected above 400� C.
Variety of material are available, most typically Mild Steel, Stainless Steel and Incoloy. Designs are based on elements having sheath diameter of 8.0mm and 11.0mm with fins spaced at 25 fins (approx.) per 100mm of length. The number of fins per running inch of element ranges from 2-9, a standard of 5-6 fins (approx.) and allowing reasonable clearance between fins to reduce sludge or scale collection in between.
The diameters of PHP Finned Heating Elements confirm to our listed sizes, i.e. 1/4", 5/16", 3/8", 7/16".
Typical Applications
For Air heating applications such as forced air duct heating, recirculation drying
ovens, air conditioning systems plus many others.
PHP Finned Elements are supplied in a number of standard sizes but special wattage and
lengths can be manufactured on request.
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| Volts | Approx.
Length mm In. |
Watts | Dia.
8.00 mm A B |
Watts | Dia.
11.00 mm A B |
|||
| 240 | 230 | 9" | 450 | 230 | 190 | - | - | - |
| 240 | 305 | 12" | 600 | 305 | 265 | 850 | 305 | 265 |
| 240 | 455 | 18" | 900 | 455 | 410 | 1250 | 455 | 410 |
| 240 | 610 | 24" | 1250 | 610 | 560 | 1750 | 610 | 560 |
| 240 | 685 | 27" | 1350 | 685 | 645 | 2000 | 685 | 645 |
| 240 | 760 | 30" | 1500 | 765 | 725 | 2250 | 760 | 720 |
| 240 | 915 | 36" | 2000 | 915 | 875 | 2500 | 915 | 875 |
| 240 | 1015 | 40" | 2500 | 1065 | 1025 | 3000 | 1065 | 1025 |
| 240 | 1220 | 48" | - | - | - | 3500 | 1220 | 1180 |
Tabled abopve is our standard range of Tubular Heating Elements for ready use and quick reference.
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PHP provides the most efficient methods for heating. All the heat generated is observed by the surrounding material providing the highest heating efficiency possible. PHP Immersion Heaters are available in a full range of shapes, mounting methods, sheath matrerial and electrical rating. Immersion Heaters are designed to produce various heat intensities(Watt densities). mild temperature for thick oils, waxes, molasses, soft matels and other dense materials. More intense heat for water, salt and other solutions having high heat absorbing rates.
The three basic types of mounting provides easy installation and accurate temperature control. PHP Immersion Heaters are highly useful in industrial and commercial applications. Different sheath materials are used to correspond to the characteristics of the material being heated providing maximum resistance when used on corrivise materials.
PHP Immersion Heaters basic design consists of Tubular heating elements formed to a hairpin or other suitable shapes and brazed or welded to pipe plugs, steel flanges or steel plates. The heater terminals are sealed against moisture and protected something metal box providing ample space for electrical wring.
| Screw-Plug To wrap text to image Screw-Plug type Immersion Heaters are screwed directly through threaded openings in the tank wall. Heavy tank walls can be drilled and tapped. It is recommended that a minimum of 1" of threads be obtained. If not possible a pipe coupling should be welded onto the wall of the tank. Use proper soldering or well something material to correspond with material being heated. PHP Heaters offer a wide range of Screw-Plug Immersion Heaters in various sizes, sheath materials and electrical ratings. |
Flanged To wrap text to image Flanged type Immersion Heaters are mounted to pipes or tanks having standard Flanged mounting provisions. A protective well is standard to accept the capiliary bulb of a thermostatic control. Special laminated gaskets should be used when heating at high pressure or heating penetrating type liquids. PHP offers a wide range of Flanged Immersion Heaters in various sizes, sheath materials and electrical ratings. |
| Application | Temperature of media to be heated in � C | Permitted specific
surface loading in W/cm@ on tube outer cladding, from, Copper SS316 Mildsteel Incoloy SS321 |
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| Oil, thin | 50 | -- | 3,5 | 3,5 | -- | -- |
| Oil, thin | 250 | -- | 2 | 2 | -- | -- |
| Oil, thin | 350 | -- | 1,5 | 1,5 | -- | -- |
| Oil, thick | 300 | -- | 1,2 | 1,2 | -- | -- |
| Oil, in sealed containers (radiators) | 80 | -- | 12 | 12 | -- | -- |
| Glycerine | 150 | -- | 2 | 2 | -- | -- |
| Tar | 150 | -- | 1 | 1 | -- | -- |
| Lead bath | 500 | -- | -- | 4 | -- | -- |
| Air, still | 25 | -- | 1,7 | 5 | 6,0 | -- |
| Air, still | 250 | -- | 1 | 4 | 5 | -- |
| Air, flowing, at 2m/s | 50 | -- | 2 | 5,5 | 6,5 | -- |
| 250 | -- | 0,7 | 3,5 | 4 | -- | |
| 450 | -- | -- | 2 | 2,2 | -- | |
| Air, flowing, at 6m/s | 50 | -- | 3,5 | 9 | 10 | -- |
| 250 | -- | 1,6 | 6 | 6,5 | -- | |
| 450 | -- | -- | 3,5 | 4 | -- | |
| Air, flowing, at 10m/s | 50 | -- | 5 | 10 | 10 | -- |
| 250 | -- | 2 | 8 | 9 | -- | |
| 450 | -- | -- | 4,5 | 5,5 | -- | |
| Radiant heating system with reflector | -- | -- | -- | 5 | 6 | -- |
Installation and Maintenance Recommendations
Designed & Created By : THE EDG.
Copyright � 1999 [Smart Designs]. All rights reserved.
Revised: April 16, 1999.