Green Bay & Brown County: (920) 468-6951  |   Oshkosh & Winnebago County: (920) 235-6951  |   Fond du Lac & Fond du Lac County: (920) 923-2500

Understanding Basic Combustion

Green Bay & Brown County: (920) 468-6951
Oshkosh & Winnebago County: (920) 235-6951
Fond du Lac & Fond du Lac County: (920) 923-2500

Understanding Basic Combustion

There's more to a Tune-up than a quick "Once-Over"...

Understanding Basic Combustion


Useful Information on Combustion Efficient Fuel Use

A Definition:

Combustion is the rapid oxidation of a fuel resulting in the release of usable heat and the production of a visible flame

The Combustion Equation:

Natural Gas With Air:

CH4 + 2O2 + 8N2 ----------->

CO2 + 2H2O + 8N2 + 1000 BTU Heat

Examples of Combustion

Perfect Combustion Provides:

The hottest flame
Minimum exhaust volume

Perfect Combustion

Characteristics:

  • All fuel combusted
  • Blue near burner tile
  • Forms a yellow conical flame shape
  • Produces the highest flame temperature
  • Provides the minimum exhaust volume

Lean Combustion

Characteristics:

  • Flue products oxidizing (Free O2)
  • Pale blue color
  • Forms a more conical flame
  • All fuel combusted
  • Flame temperature drops (Heating excess air)

Incomplete Combustion

Characteristics:

  • Air starved or fuel rich
  • Carbon Monoxide and H2 formed
  • Reducing atmosphere
  • Flame color is predominantly yellow color
  • The flame is less defined
  • Flame temperature drops

Optimum Energy Utilization Occurs When Perfect Combustion Ratios Are Maintained

When A Furnace Tune-Up Is Done Right The Technician will have taken time to:

  • Verify proper mix and directed air/fuel supply
  • Confirm that you have stable combustion
  • Check to make sure that the system is venting all the by-products of the exhaust flue gases

A Definition of Combustion Terms

Excess Air Definition:

Air remaining after the fuel has been combusted
-or-
Air supplied in addition to the quantity needed for stoichiometric combustion

Primary & Secondary Air:

Primary Air --

  • Air mixed with the fuel prior to ignition

Secondary Air --

  • Air supplied to the flame after it is ignited

Secondary Air Effects --

  • Imprecise air/fuel ratio control
  • Exhaust volume increases
  • Fuel rate rises
  • Less available heat
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Call Us Today • or •
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Contact Information
 
Green Bay Location
Address:  1736 Sal St.
Green Bay, WI 54302
Phone:     (920) 468-6951
 
Oshkosh Location
Address:  3250A Walter St.
Oshkosh, WI 54901
Phone:     (920) 235-6951
 
Fond du Lac Location
Address:  160 South Brooke St.
Fond du Lac, WI 54935
Phone:     (920) 923-2500
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Office Hours
 
Green Bay:       MON - FRI   |   7:00am - 6:00pm
Saturday by Appointment
Oshkosh:          MON - FRI   |   8:00am - 4:30pm
Fond Du Lac:    MON - FRI   |   8:00am - 4:30pm
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For AC in Green Bay WI, we accept most major credit cards.
 
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We accept check for Air Conditioner repair service provided in Fond du Lac WI.&width=100
 
For AC in Green Bay WI, we accept most major credit cards.
We accept cash for Cooling repair service provided in Oshkosh WI.
We accept check for Air Conditioner repair service provided in Fond du Lac WI.
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