GENERAL CHARACTERISTICS:
The flanged electric heaters are manufactured for different industrial applications for liquid substances heating.
In addition, this heaters typology grants high performances and efficiency in maintaining at the established temperature high volumes of fluids (water, industrial oils such as fuel oil or thermal oil, gas and air).
The heating elements forming the tube-bundle can take up various shapes and folds making them suitable for easy installation also at the bottom of cisterns or basins, both in horizontal or vertical position, for fluids direct or indirect heating intended for different uses, in the main industrial sectors.
The first quality materials use within our production cycle allows the flanged immersion electric resistors manufactured by us, to reach high operating temperatures and a medium-long term useful operative life.
USE
Designed for being inserted in pipeworks, basins or tanks under pressure, directly immersed into contact with the fluid, this heaters typology grants an optimal heat exchange, also in very compact dimensions.
In order to grant the product design of an efficient flanged electric resistor for immersion, the following technical parameters must be established:
CERTIFIED QUALITY PRODUCT
The entire production cycle of fanged fitting industrial electric resistors is subject to the strictest dimensional checks and electric tests in compliance with the standards set forth by our own ISO 9001:2015 certified Corporate Quality System, and in full compliance with the CEI/EN requirements in force.
TECHNICAL DATA
This heaters typology consists of a tube-bundle made by various heating electric elements of different diameter, generally folded in U or eyelet shape, perpendicular to the electric contacts outlet or folded at 90 degrees. Each element is TIG-welded or braze welded silver alloy on DIN, ANSI unified flanges, or on flanged fittings of non-unified shape, of variable dimension, based on the operating pressure and temperature.
| Classe Temp. ATEX / ATEX Temp. Class | ||||||||||||
| ‘T6’: 85°C | ‘T5’: 100°C | ‘T4’: 135°C | ‘T3’: 200°C | ‘T2’: 300 | ‘T1’: 450°C | ||||||||||||
| Lungh. Z.N. / Cold zone Lg. | A | B | A | B | A | B | A | B | A | B | A | B |
| 300 mm | T6 | X | T4 | X | T3 | X | T3 | X | T2 | X | T2 | X |
| 250 mm | T6 | X | T4 | X | T3 | X | T3 | X | T2 | X | T2 | X |
| 200 mm | T6 | X | T4 | X | T3 | X | T3 | X | T2 | X | – | |
| 150 mm | T6 | X | T4 | X | T3 | X | – | – | – | |||
| 100 mm | T6 | X | T4 | X | T3 | X | – | – | – | |||
| 0 mm | T6 | X | – | – | – | – | – | |||||
| Temp. Lavoro / Working Temp. | 0°C | 100°C | 150°C | 200°C | 250°C | 300°C | ||||||
| Legenda:
A = Classe Temp. / Temp. Class B = Ex-proof head Temp.-proof allowance |
(X)= Yes |
(–)= Not |
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The electric connections section is enclosed inside housings or standard carbon steel or stainless steel IP55/IP56,heads or inside specific explosion-proof heads, suitable for use in explosive environment. Equipped with efficient thermoregulation devices (control thermostats with adjustable temperature scale, with automatic or manual reset or, alternatively, surface safety thermostats with intervention cut-out, thermoresistors PT100 and/or thermocouples “J” or “K”), suitable for protecting the heater from overheating and possible premature damage. Inside the electric connections head, based on the customer specific exigences, also the electric power inlets (NPT or GAS) are properly dimensioned according to the number of elements installed, power and amperage determining the cables section.
These electric resistors types surface load (W/cm2) is specifically decided from time-to-time, based on the use conditions and type of fluid to be heated; in addition to these factors, the maximum operating temperature and operating environment are also variables directly influencing the type of sheath material choice, to manufacture the tube-bundle of these heaters (Carbon steel, stainless steel AISI304, AISI309, AISI 321, AISI 316L, Incoloy800-825, Inconel 600 or Titanium).
SURFACE LOAD (W/cm2) SELECTION GUIDELINE:
SOME EXAMPLES:
