Circulation heater
Circulation heaters are efficient electric heating systems that require minimal time and labor to install. They combine heating elements, vessel, insulation, terminal enclosure, mounting brackets, and inlet/outlet connections into a complete assembly. These heaters are designed to heat forced-circulation air, gases, or liquids, making them suitable for in-line or side-arm operations.
- Flange-form heating core with advanced and safe structure.
- Easy installation and disassembly.
- Guaranteed performance and safety.
- Energy-efficient with low running costs.
- Uniform heating with up to 95% thermal efficiency.
- Customizable multi-point temperature control.
- Controllable outlet temperature.
- High mechanical strength.
- Watt densities up to 120W/in2 (18.6 W/cm2)
- Wattages up to three megawatts
- UL® and CSA component recognition up to 690VAC
- Ratings up to ANSI Class 600 pressure class
- Alloy 800/840 sheath
- Temperatures up to 1600°F (870°C)
- Passivated 316 stainless steel sheath temperatures up to 1200°F (650°C)
- Steel sheath temperatures up to 750°F (400°C)
Terminal Enclosures: E1 General Purpose: Sheet metal, painted with red enamel； E2 Moisture Resistant/Explosion Proof； E4 Moisture Resistant.
Controls: Some units come with a thermostat mounted on the heater.
Mounting: Small units supported by inlet and outlet piping； Larger units equipped with mounting lugs for support.
Outer Jacket: Heavy gauge painted steel sleeving. Contains high-temperature thermal insulation to reduce heat loss.
Heating Chamber:
Pipe chambers (150 Lbwelded construction, standard) have a flanged or threaded end to receive heater assembly and are closed at the opposite end. Larger units have drain connections to allow sludge removal. Inlet and outlet nozzles are provided for the circulation of fluid or gas through the heater chamber. Chamber material is available in Steel. Galvanized Steel or Stainless Steel depending on the application.
Heating Elements:
Flange or screw plug mounted tubular type heating elements. Available in Stainless Steel, Copper, Steel, or INCOLOY sheath options for corrosive resistance.
Wiring Connections:
Internal wiring and power connections are sized according to wiring tables in the National Electrical Code and International Electric Code.
All external wiring should comply with local codes for safe operation.
Circulation Heater Typical Application
Inline Heating:
Circulation heaters installed directly in the fluid line eliminate the need for storage tanks, reducing heat losses and meeting constant demands for heated water or oil.
Side Arm:
Multiple circulation heaters can fulfill the requirements of large storage tanks, offering temperature control flexibility and reducing power demand.
Closed-Loop Fuel Oil Heating:
Several individually adjustable circulation units meet temperature and fluid flow requirements, effectively reducing electrical demand on utility bi
How to select a circulation heater
3. Right to Understand. The selection of the sheath material is determined by the buyer’s understanding of the corrosive solution’s chemical composition, the characteristics of materials introduced into the solution, and the implemented controls to maintain the process. This knowledge guides the ultimate choice of sheath material to mitigate corrosion.
