Air-to-fuel ratio | Process Heating

PH0821 Honeywell combustion systems ZIO High Temp

Combustion Control

Achieving Effective Control of Process Heating Combustion Systems

Careful selection of combustion control methods and equipment helps optimize the control of industrial heating systems.

Brian Kelly, Honeywell Thermal Solutions

August 24, 2021

Power is nothing without control. You can have the best, most technically advanced burner. If the burner is not properly controlled, and the heat is not applied appropriately during the production process, the result will be disappointing — or worse.

Industrial Thermal Oxidizers

5 Components to Get Right When Specifying Thermal Oxidizers

If all conditions are considered, a carefully selected thermal oxidizer can last many years.

John F. Straitz III, NAO Inc.

February 8, 2016

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Thermal oxidizers offer a safe, effective and reliable solution to the need for the elimination of objectionable waste streams, odors and volatile organic compounds (VOCs) while complying with environmental regulations.

Web Exclusive

How Reducing Excess Combustion Air Helped One Industrial Plant

Better air management can lead to significant improvements as it did at a major car manufacturer in the Midwest where approximately 240,000 vehicles are manufactured per year.

Mark Lampe

February 9, 2015

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Better air management can lead to significant improvements as it did at a major car manufacturer in the Midwest where approximately 240,000 vehicles are manufactured per year.

Combustion

The Impact of Combustion Controls

Regardless of fuel choice, combustion controls are critical to maintaining a high level of performance.

Katie Huller, CEC Combustion Safety

August 5, 2014

2 Comments

Combustion controls regulate a fuel-fired system’s air and fuel inputs to maintain the air/fuel ratio within the limits that are required for proper combustion.

Solid-Fuel Boilers Operation

September 10, 2013

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Solid-fuel boilers also can be set up as portable systems for users that have seasonal hot water or steam heating applications.

Excess Air: Is it Such a Big Deal?

Setting up combustion systems for too much excess air (or dilution air) wastes fuel. Here's how to know if you are wasting natural gas in your industrial oven.

Dick Bennett

October 9, 2006

One Comment

It's a well-established fact that setting up combustion systems for too much excess air (or dilution air) wastes fuel. You can use this relationship to calculate just how much you can save by decreasing excess air:

% Fuel Savings = 100 x [1- (Available Heat, High XS Air/Available Heat, Low XS Air)]

Air Changes, Part 1: Recirculation Air Review

One frequently raised question is how designers determine the amount of recirculating air to use in a particular oven.

Dick Bennett

September 1, 2003

One Comment

One frequently raised question is how designers determine the amount of recirculating air to use in a particular oven.

Burners and Their Control, Part 5

Effective industrial burner control relies on selecting the proper combustion control method.

Dick Bennett

September 1, 2000

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I'll wrap up this series of columns with a look at some more ratio control systems. These are less used on ovens, dryers and low temperature processes, but you may run into them where special conditions require their unique features.

Burners and Their Control, Part 4

Effective industrial burner control relies on selecting the proper combustion control method.

Dick Bennett

August 1, 2000

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Now that you understand the ways combustion air-fuel ratios can be controlled, I'll describe the three most common systems used to achieve that control: linked valves, cross-connected regulators, and fixed air systems.

Burners and Their Control, Part 3

Effective industrial burner control relies on selecting the proper combustion control method.

Dick Bennett

June 1, 2000

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In addition to controlling the air and fuel flows individually, you need to tie the two control systems together to set and hold repeatable air-fuel ratios for flexibility, efficiency and safety while the burner system cycles between high and low fire. Before I get into the mechanics of it, I'll look at the different ways combustion air-fuel ratios can be controlled.