Thermal Energy Required From Diesel Boiler

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Combined heat and power such that on a calendar year basis at least 90% of the thermal energy associated with ethanol production (including thermal energy produced at the facility and that which is derived from an off-site waste heat supplier) exclusive of any thermal energy used for the drying of distillers grains and solubles is used to produce electricity prior to being used to meet the process

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Energy in fuel enters the boiler (energy input 100 percent). From the boiler 4 percent of heat loss is through radiation and convection 18 percent is in flue gasses and 3 percent is in blowdown. Energy in heating medium (e.g. steam) exits the boiler. Energy output (boiler thermal efficiency) is

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Boiler Efficiency

Boiler efficiency may be indicated by. Combustion Efficiency - indicates a burners ability to burn fuel measured by unburned fuel and excess air in the exhaust; Thermal Efficiency - indicates the heat exchangers effectiveness to transfer heat from the combustion process to the water or steam in the boiler exclusive radiation and convection losses; Fuel to Fluid Efficiency - indicates the ...

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