Air heating elements with smooth surface

GENERAL CHARACTERISTICS:

The air heating elements with smooth pipe surface are suitable for being used in countless applications of industrial and civil type.

These heaters perfectly adapt to many applications where substances and air must be heated-up. These are high-quality reliable products, very versatile and thermal efficient, complying with the strictest safety standards and details care.

Their function is to create air or gas flows at a set temperature or to maintain environments at a controlled temperature.

They can take countless shapes and folds and their reduced size makes them suitable for being installed to ventilation ducts, air conditioning systems for air flow direct heating or machineries for unlimited uses in the main industrial sectors.

Despite the smooth surface (not finned) of the sheath or shell is less effective than the finned sheath in favouring the heat exchange, the smooth surface does better work in presence of fluid to be heated-up containing suspended particles.

The use of first quality materials within our production cycle allows our range of air heating elements with smooth surface to reach high operating temperatures.

USE

The application methods of a smooth pipe heating elements are multiple, considering the high resistance to take up different types of folding and shaping, in all the cases of still and ventilated air treatment.

Among the most common applications, it can be found:
Forced and natural air heating convection, air conditioning systems
Industrial ovens, baking sector ovens, civil use ovens, hot chambers, drying ovens, centrifugal machines
Packaging and wrapping machines, smoke elimination systems, air drying systems, humidification and dehumidification machines.
Saunas, catering sector hot surfaces and heating trolleys, portable convector heaters, fan-coils, zootechnics systems and air-curtains

CERTIFIED QUALITY PRODUCTThe entire production cycle of smooth pipe heating elements is subject to the strictest dimensional checks and electric tests in compliance with the standards ISO 9001:2015 belonging our certified Corporate Quality System, and with the CEI/EN standards.Among the main above mentioned electric tests, this type of products is carefully subject to insulation resistance tests, dielectric rigidity tests, ohmic value and leakage current tests.

TECHNICAL DATA

This type of smooth tubular heating elements is generally manufactured with 0.5÷4 W/cm2 surface load.

In presence of a high circulation of air or gas flow, higher specific powers can be reached, ranging between 3 and 7 W/cm2.

PRODUCT DESIGN ESSENTIAL DATA

Sheath material: Carbon-Steel/ Stainless-Steel / Incoloy800
Fins material: Galvanized-Steel / Stainless-Steel
Sheath diameter: 8.2 – 10.3 – 15.4 mm
Round Fin outer diameters: 28.2 – 30.3 mm. – 35.4 mm.
Rectangular fin sizes: 25 x 50 mm. or 40 x 80 mm.
Terminal Pin – threaded
Cold section at the ends of the electric connections (so called “Neutral Zone”) = variable according to the application specific characteristics (min. 30 mm)
Wheelbase centre-to-centre = min 8 – 12 mm (U- resistors)
Supply voltage = beginning from 24V
Pipe sheath length = variable according to the elements shape and bend, as well as the air flow speed inside the ventilation air-duct and the surface density (W/cm2)
Power = variable according to the surface density (W/cm2)

STANDARD ITEMS LISTED IN OUR CATALOGUE

When these heating elements are used in standard conditions, with no particularly complicated heating exigences and when prompt delivery is needed, we do have a stock of standard finned elements of various power, sheath and fold material (straight, U-shape or M-shape) both for still and circulating air heating..

SOME EXAMPLES: