Compact and efficient, circulation heaters may be used in forced or natural circulation systems to heat flowing gasses or liquids. Pipe plug or Flanged immersion heater, vessel, insulation, terminal enclosure, mounting brackets and inlet and outlet connections are included. Installation is simple with only basic wiring and piping connections required. An integral thermostat can be included, but more commonly the circulation heaters are integrated into a closed heat cycle with , and .
Circulation heaters can be built with up to 500kW. (also popular: several power circuits on same heater to ). Usually they'are rated up to 150 PSI, if higher pressure is required, .
General applications for circulation heaters:
- Heat transfer oils-Molding dies and platens, closed loop heat transfer systems for heat sensitive materials
- Fuel oil heating--Pre-heating for delivery to burners, pre-heating to pumping viscosity
- Water-Dishwashing and rinsing, hot water storage tanks, process water, jacketed kettles
- Air, gasses, steam-Process air, boosting temperatures of gasses, steam superheating
Common watt densities for heating fluids:
- 45 to 100 WSI: water
- 20 to 25 WSI: light oils, cooling fluids
- 10 to 15 WSI: medium viscosity oils
- 5 to 7 WSI: rude crude oil, vicious mater fluids
- 3 to 5 WSI: very vicious fluids