Indirect Resistance Heating

Indirect resistance heating example:
Weld preheat ceramic mat heater.

With indirect resistance heating, a heating element transfers heat to the material by radiation, convection, or conduction. The element is made of a high- resistance material such as graphite, silicon carbide, or nickel chrome. Heating is usually done in a furnace, with a lining and interior that varies depending on the target material. Typical furnace linings are ceramic, brick, and fiber batting, while furnace interiors can be air, inert gas, or a vacuum.

Indirect resistance heating can also be done with an encased heater, in which the resistive element is encased in an insulator. Called metal sheath heaters this type of heater can be placed directly in liquid to be heated or close to a solid that requires heating. Numerous other types of resistance heating equipment are used throughout industry, including strip heaters, cartridge heaters, and tubular heaters.

Indirect resistance heating example: 
Clamp-on pre-weld electric heater.

Resistance heaters that rely on convection as the primary heat transfer method are primarily used for temperatures below 1,250 ̊F. Those that employ radiation are used for higher temperatures, sometimes in vacuum furnaces.

Indirect resistance furnaces are made in a variety of materials and configurations. Some are small enough to fit on a counter top, and others are as large as a freight car. This method of heating can be used in a wide range of applications. Resistance heating applications are precisely controlled, easily automated, and have low maintenance. Because resistance heating is used for so many different types of applications, there are a wide variety of fuel-based process heating systems, as well as steam-based systems, that perform the same operations. In many cases, resistance heating is chosen because of its simplicity and efficiency.

Indirect resistance heating example: 
Electric hopper heaters.

Indirect resistance heaters are used for a variety of applications, including heating water, sintering ceramics, heat pressing fabrics, brazing and preheating metal for forging, stress relieving, and sintering. This method is also used to heat liquids, including water, paraffin, acids, and caustic solutions. Applications in the food industry are also common, including keeping oils, fats, and other food products at the proper temperature. Heating is
typically done with immersion heaters, circulation heaters, or band heaters. In the glassmaking industry, indirect resistance provides a means of temperature control. Many hybrid applications also exist, including “boosting” in fuel-fired furnaces to increase production capacity.

Resistance heating applications are precisely controlled, easily automated, and have low maintenance. Because resistance heating is used for so many different types of applications, there are a wide variety of fuel-based process heating systems, as well as steam-based systems, that perform the same operations. In many cases, resistance heating is chosen because of its simplicity and efficiency.

Contact Hotfoil-EHS for any industrial resistance heating project. With decades of application experience, Hotfoil-EHS engineers can help you design a system tailored to your exact needs.

New Hotfoil-EHS UK Ltd. Product Brochure

Hotfoil-EHS UK has just released a new general product capability brochure. You can download the PDF here.

Hotfoil-EHS UK Brochure from Hotfoil EHS, Inc.

Gas Trains and Combustion Systems by Hotfoil-EHS

Hotfoil-EHS manufactures complete gas trains and combustion systems complete with:

• Dual ASCO valves for start-up (6 to 10 million BTU systems only)
• Air light and air switch
• Low-gas and high-gas switch
• Gas light
• Ignition transformer and ignition light
• Burner on light
• Dual main gas valves
• Strobe light and horns as well as the mute buttons
• Proof of Closure Switch
• UV Sensor
• UV Meter
• Re-set button
• Veriflame control module
• Relays mounted inside a Nema 4 control box
• Ramping controller for timing the ramp

https://hotfoilehs.com
609-588-0900

Hotfoil-EHS Heat Treatment Equipment

EHS engineers, designs, and manufactures proven heat treatment systems to effectively complete any project more efficiently than competitive systems, while staying within any budget. Years of application experience and successful installations have produced thousands of happy customers. A focus on customer service second to none.

Job Posting: Sales Associate - Hotfoil-EHS UK

Hotfoil-EHS is a USA based manufacturer of industrial heating systems, heat treatment equipment, and accessories. The company recently opened a facility in Birmingham, England and is looking for a qualified candidate to fill the role of Sales Associate.

For more information about the job, visit this link.

Happy Fourth of July from Hotfoil-EHS

"One flag, one land, one heart, one hand, One Nation evermore!"

Oliver Wendell Holmes

Hotfoil-EHS Expanding to United Kingdom with New Engineering and Manufacturing Center

Hamilton, N.J., June 8, 2018 - Hotfoil-EHS, Inc., America's premier manufacturer of industrial heating equipment, announced today the opening of their United Kingdom facility in Birmingham, England.

"The opening of our UK facility signals a homecoming of sorts, since our original company, Hotfoil, was founded in the mid-1960's in England,” said Hotfoil-EHS President, Matt Richards. “The Birmingham location makes perfect sense for Hotfoil-EHS. After several ownership changes, my father, Neville Richards, took ownership in 1993." Richards continued, "Since then, we have grown though key acquisition and new product development. This move also is the first step in our aggressive strategy to expand into the international market.”

The new Hotfoil-EHS facility in Birmingham will provide the UK with a large local inventory of power consoles, recorders, ceramic heaters, and a full line of accessories used for heat treatment. Hotfoil-EHS UK will also supply hopper heaters, tank heaters, vessel heaters as well as control systems.

According to UK General Manager David Robbins, “The opportunity to introduce such a high quality product line to the UK is wonderfully exciting. I am delighted to be working with such a well established US company and progressive management team."

About Hotfoil-EHS
Manufacturer of America's premier heat treatment and industrial heating equipment, Hotfoil- EHS is driven by providing the highest quality products, delivering the best customer service, and keeping costs low. Their headquarters and main manufacturing facility is located in Hamilton, NJ and have two additional manufacturing operations in Laporte, TX and Chattanooga, TN.

For more information contact Dean Prassas by emailing dap@hotfolehs.com or by visiting:

https://hotfoilehs.com
https://hotfoilehs.co.uk
https://www.facebook.com/hotfoilehs