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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.
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.
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.
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 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.
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.
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)]
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.
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.
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.