Flange immersion heaters

NOVI BACKER-OV SAJT
Backer’s Flanged Immersion Heaters give you efficient heating with a robust, industrial design. The selection of various materials, sizes, immersion lengths and watt densities ensures an optimized configuration for every unique application. The Backer range of Flanged Immersion Heaters are designed for applications in tanks and vessels as well as flow heaters. The heating elements, which are welded, brazed or clamped onto the flange, are either pre-designed for standard applications or will be customized for specific needs. The standard flanges, insulation necks and connection boxes are pre-assembled in various sizes.

With or without protection cap or terminal box

design features
Backer’s Flanged Immersion Heaters give you efficient heating with a robust, industrial design. The selection of various materials, sizes,
immersion lengths, watt densities, etc. ensures an optimized configuration for every unique application. The Backer engineering team are standing by for offering the right selection of Immersion heater for your needs.

about the product
The Backer range of Flanged Immersion Heaters are designed for applications in tanks and vessels as well as flow heaters. The heating
elements which are welded, brazed, or clamped onto the flange are either pre-designed for standard applications or will be customized
for specific needs. The standard flanges, insulation necks and connection boxes are pre-assembled in various sizes. The size, number of tubular elements, immersion length and watt density can easily be modified to meet every unique application demand.

watt density selection
Watt densities range from 1-10 watts per square centimetre. Choosing the correct watt density is essential for prolonging the life of the heater and prevent fluid degradation. The fluid’s ability to absorb heat from the element will determine the proper watt density. Water easily absorbs heat from the elements, so a high watt density is appropriate. Fluids like Crude Oil as well as gases, do not absorb heat from the element that well and consequently a much lower watt density is required.

design selection
The flanged heaters can be designed either as a flow heater in a flow tube or as a batch heater in a tank. The construction will differ slightly, depending on the actual installation mode.
When selecting the correct Flanged Immersion Heater, the following application parameters needs to be considered:
• Type of fluid/gas to be heated (temperature sensitivity)
• Flow rate, if designed as a Flow heater
• Physical limitations such as, materials, flange size and immersion length
• Power demand
• Voltage required
• Other relevant information such as, control system, pressure class, hazardous environment, certification, etc.
The Backer engineers are ready to help you in designing the optimum heater for your application.

additional options & capabilities
Process controll Backer can provide a both standards aswell as cusotmized sensors, controllers and regulators to achieve the appropriate control loop for every application. On/off control is normally suitable for tank applications while full PID-regulation might be needed for flow heaters.
Flow heater / Circulation heater For heating continous flows of media a Flanged heater can be combined with a Flow tube and optimized for the required thermal duties. The Flow heater can either be supplied as a stand alone unit or as a skid mounted version, fitted with auxilliary equipment such as filters, pumps, sensors, controllers and expansion vessles

additional services
• For non-generic and sensitive applications Backer offers Computational fluid dynamics
(CFD) analysis
analysis for ensuring the thermodynamical and fluidical performance
• When needed, pressure tests can be carried out for system designs up to PN63
• Aftermarket services, such as renovation and product maintenance are performed in our
workshop. Some services can also be carried out on site.

The size, number of tubular elements, immersion length and watt density below can easily be modified to meet every unique application demand.