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Stelter & Brinck
Since 1956
Direct Fired Vs Indirect Fired
Technical Differences
Stelter & Brinck
Since 1956
Direct Fired
• When the burner is fired directly into the process air
stream, this is what we call “Direct Fired”.
• Direct Fired is utilized when the end product will not
be affected by the by-products of combustion.
Indirect Air Heater
Stelter & Brinck
Since 1956
Direct Fired
• Direct fired are less expensive and more efficient than
indirect fired units.
• Direct Firing converts nearly 100% of the combustion
gases used to hot air.
Indirect Air Heater
Stelter & Brinck
Since 1956
Direct Fired Air Heater Diagram
Indirect Air Heater
Stelter & Brinck
Since 1956
Indirect Fired
Indirect Air Heater
• When the burner is fired into a heat exchanger, the air
is being heated indirectly.
• The by-products of combustion are left in the heat
exchanger during this process.
Stelter & Brinck
Since 1956
Indirect Fired Air Heater Diagram
Indirect Air Heater
Stelter & Brinck
Since 1956
Indirect Air Heater Check out this
infographic, for a visual
overview and some
direct vs indirect fired
air heater
applications!!
Stelter & Brinck
Since 1956
Thank you!
Website: www.stelterbrinck.com
Twitter: @stelterbrinck
Phone: 1-513-367-9300
Check out S&B’s Blog Post:
http://www.stelterbrinck.com/blog/direct-fired-vs-indirect-fired/

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Direct Fired vs Indirect Fired

  • 1. Stelter & Brinck Since 1956 Direct Fired Vs Indirect Fired Technical Differences
  • 2. Stelter & Brinck Since 1956 Direct Fired • When the burner is fired directly into the process air stream, this is what we call “Direct Fired”. • Direct Fired is utilized when the end product will not be affected by the by-products of combustion. Indirect Air Heater
  • 3. Stelter & Brinck Since 1956 Direct Fired • Direct fired are less expensive and more efficient than indirect fired units. • Direct Firing converts nearly 100% of the combustion gases used to hot air. Indirect Air Heater
  • 4. Stelter & Brinck Since 1956 Direct Fired Air Heater Diagram Indirect Air Heater
  • 5. Stelter & Brinck Since 1956 Indirect Fired Indirect Air Heater • When the burner is fired into a heat exchanger, the air is being heated indirectly. • The by-products of combustion are left in the heat exchanger during this process.
  • 6. Stelter & Brinck Since 1956 Indirect Fired Air Heater Diagram Indirect Air Heater
  • 7. Stelter & Brinck Since 1956 Indirect Air Heater Check out this infographic, for a visual overview and some direct vs indirect fired air heater applications!!
  • 8. Stelter & Brinck Since 1956 Thank you! Website: www.stelterbrinck.com Twitter: @stelterbrinck Phone: 1-513-367-9300 Check out S&B’s Blog Post: http://www.stelterbrinck.com/blog/direct-fired-vs-indirect-fired/