Oxygen Control | CleanBoiler.org

For Example: 4.5% Excess Oxygen reduced to 2.0%. 1.0 (0.7972 / 0.8308) = 0.04044 = 4.04%. NOTE: Because some boilers operate with a very high percentage of excess oxygen it is common for the first year savings to be substantially higher than this.

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ENERGY MANAGEMENT SERVICES - US EPA

natural gas fired boiler to 12% for an oil-fired boiler to as low as 9% for a coal fired boiler. It must be pointed out that the stack loss range is wide for a given fuel and is primarily impacted by the type of thermal energy recovery equipment the boiler has and the manner in which combustion is controlled.

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