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FIREBAR® . . . A SOLUTION TO YOUR HEATER PROBLEMS For over half a century, people have been using round tubular heating elements for surface heating. The Watlow® FIREBAR® flat tubular heater is an innovative concept that provides a wide array of design improvements. A SOLUTION TO HEATER POWER AND RESPONSIVENESS PROBLEMS In oil and other viscous materials, a FIREBAR flat tubular heater operates at a higher watt density than a round tubular heating element without changing the sheath temperature. The FIREBAR heater also enables you to place more wattage into applications at the same watt density...

FIREBAR 1000 Heater Round Tubular The thin profile on top of FIREBAR heating elements provides little space for solids to settle. The velocity of fluid flowing past the flat surface of a FIREBAR element also has a “wiping” effect on the surface of the heater. In oil or similar products where coking is a problem, the round tubular heating element’s sheath temperature may be too high. FIREBAR heaters provide the benefit of a lower sheath temperature than a round tubular element, without reducing wattage or watt density. FIREBAR 1000 Heater Oil Test 40 W/in2 (6.2 W/cm2) Tested at different temperatures...

UNIQUE DESIGN FEATURES Watlow’s FIREBAR heater is manufactured with three precisely wound resistance wires, arranged side-by-side in a flattened tubular metal sheath and insulated with extremely pure, compacted magnesium oxide (MgO). Flat surface, greater surface area, thin MgO walls and three-coil are all instrumental features provided in the FIREBAR. CONSTRUCTION 1. Nichrome resistance wire: High-grade resistance wire is precisely wound to provide the required application heat. 2. Magnesium oxide insulation: High purity material is compacted around the coils for optimum thermal conductance...

2. Greater “buoyancy force”: Natural convection phenomena depends partially upon the ratio of a buoyant force to the viscous force of the heated fluid. This buoyant force, or flow of liquid up and across the heater surface, is primarily determined by the size of the boundary layer of the heater (the sides of the heater). The boundary layer of a FIREBAR heater is 1 in. (25.4 mm), compared to the 0.43 in. (10.9 mm) boundary layer of a typical diameter round tubular element. Depending on the material being heated, this creates a buoyancy force up to 10 times greater than a round tubular element....

IMPROVING YOUR EQUIPMENT DESIGN The FIREBAR heater provides more than just a menu of immersion heating design improvements. Here are a variety of other benefits you can put to use. USING A FIREBAR HEATING ELEMENT CAN GIVE YOUR EQUIPMENT THE EDGE OVER YOUR COMPETITION The multiple performance, flexibility and convenience options the FIREBAR heater provides allow you to improve equipment design in so many different ways. You can make equipment: THE THREE-COIL DESIGN OF A FIREBAR HEATER PROVIDES VOLTAGE AND HEAT OUTPUT VARIETY By using a special center resistance wire coil, Watlow can build FIREBAR...

FIREBAR heaters are rigid enough to withstand the turbulence in immersion applications that severely warp unsupported round tubular elements. FIREBAR HEATERS OFFER THE VERSATILITY OF NUMEROUS MOUNTING OPTIONS Mounting options for FIREBAR heaters include mounting brackets, threaded bulkheads and water-tight double leg threaded fittings. For air heating, stainless steel mounting brackets are commonly used. For liquid heating, 0.236 in. (6 mm) thick steel or stainless steel brackets are brazed or welded liquid-tight to an element. Threaded bulkheads have a stainless steel bushing with flange on...

Find out more about Watlow and how we can provide thermal solutions for your company: ® Phone: 1 . 800 . WATLOW2 E-mail: [email protected] Web site: www.watlow.com Watlow Products and Technical About Watlow Support Delivered Worldwide Watlow designs and manufactures industrial heaters, temperature sensors, controllers and system North American Technical Support & Sales Ofces North America Asian Technical Support & Sales Ofces Australia assemblies – all of the components of a thermal system. Designing and manufacturing the complete thermal system allows Watlow to recommend, develop and deliver the...