Industrial Oven Safety – Convection Heating Tips

Convection Heaters

Two of the most common industrial heating methods are convection and infrared heating. The more direct heating of radiant (infrared) is more efficient in a large or targeted area. However, convection heating is more appropriate for enclosed spaces, such as industrial ovens.

Instead of directly heating the target product, convection heaters heat air as it is drawn through a fan. The heated air circulates inside the oven raising the temperature evenly throughout.

While convection heating is ideal for industrial ovens, certain safety precautions are necessary to avoid damage and danger.

Convection Heating Risks

The main risks with industrial convection heaters are the high temperatures and voltages. High temperatures, especially in enclosed spaces, like an oven, present multiple risks. Combustion or explosion is possible as both heat and temperature increase, especially if there are flammable vapors and gases inside the oven.

The high voltage output can present electrocution hazards if wiring and enclosures are not properly set up and contained. Any damage or fraying of wires and enclosures may present further risks.

Safety Features

NFPA 86 Standards

The NFPA (National Fire Protection Association) 86 codes and standards provide a guideline for minimising fire and explosion hazards for ovens and furnaces. These standards include:

  • Classification of ovens and furnaces
  • Safety Labels
  • Nameplate Information
  • Warning Labels
  • Safety Equipment
  • Rie Protection
  • Explosion Relief

The guide helps to outline these needs for each classification of furnace and oven.

Temperature Control

Runaway temperatures can cause overheating, which increases pressure and the risk of combustion of any flammable vapor or gases within the industrial oven. Using temperature monitoring and control devices helps to minimize the risk of runaway temperatures, reacting before dangerous temperature thresholds are reached.

Relief Devices

Pressure relief devices can help prevent explosions. As the heat increases, so does the pressure. Relief devices let off the pressure and dangerous vapors/gases to create a safer atmosphere inside of the oven.

Using a pressure relief device does not guarantee that an explosion will not occur. Under extreme heat/pressure, it may not be able to safely release enough pressure to prevent the explosion. However, these devices still reduce the damage that occurs if an explosion does happen.

Ventilation

Proper ventilation allows for the oven to safely remove flammable vapors and gases before they become an issue. This may include the use of fans to actively remove vapors/gases and/or passive vents that allow them to escape.

Shutoff Device

Industrial heater shutoff devices are commonly connected to the temperature monitors, shutting down the heater if a specific temperature is surpassed. For industrial ovens, the digital control panel may also engage the shutoff device if it detects a problem with airflow or fan failure.

Automated Controller

Automated control panels manage temperatures and safety equipment in heating systems. They pair with a variety of monitoring devices and control heat and activities within the system. Automation allows them to react immediately, significantly reducing user error and increasing responsiveness.

Heater Considerations

Voltage

Selecting the right voltage for the application is important. Wattco engineers help to choose the voltage of your heating system based on its type, design, operating environment, and purpose.

Wiring

Organized wiring with proper insulation and protective materials help to reduce the risks of electrocution and damage. As well, keeping the wiring clearly marked and well-organized increases the ease of maintenance and inspection.

Industrial Convection Heater Quotes & Information

Wattco custom manufactures convection heaters for ovens and other industrial heating applications. Our team of engineers works with you to select the right heater, design, and configuration for your project and budget.

Contact us today for industrial convection heater quotes and information.

Latest blogs

Common Industries that Wattco works with

Case Studies View All

Why is Mineral Oil Used in Thermal Heaters?
Thermal heaters, also known as thermal fluid heaters, employ the use of a thermal liquid such as wat...
Read More..

What to Use When Heating Wax
SituationA popular chemical compound that often requires heating is wax, which is an organic compoun...
Read More..

What is Passivation? Why do We Need to Passivate Flanged Heaters?
  Most of the parts of flanged heaters are made of stainless steel—an alloy that is mainly compri...
Read More..

What is a Digital Controller?
Control panels are essential elements of any electrical device. Control panels are especially i...
Read More..

Vegetable Oil Heating
Food Industries and Vegetable Oil Viscosity In Cleveland Ohio, a large food manufacturer called WATT...
Read More..

Wattco News View All

Wattco Executive Offers Expert Testimony for Federal Government
Ilan Toledano, Vice President of Sales and Marketing for WATTCO, testified on behalf of the Minister...
Read More..

Different Components of a Wattco Digital Controller
The introduction of digital controllers in Wattco heating devices has brought about revolutionary ch...
Read More..

Electrical Heating Element
Long gone are the days when traditional heaters were used for heating purposes. Traditionally, the i...
Read More..

Pipe Heaters for the Oil & Gas Industry
Pipe heaters play an important role in a number of processing industries. They maintain the temperat...
Read More..

Process Heating with Immersion Heaters
Process heating is an important part of industry today, especially in the defense, chemical, and oil...
Read More..

Most Popular Blogs View All