NY AEE - BOILERS 101 (SEPT 2014) Website

1 BOILERS 101 Asit PatelANP Energy Consulting Services1 Learning objectives Define what is a boiler ? What are different classification of BOILERS ? Define combustion efficiency , thermal efficiency , and fuel to fluid efficiency . Identify different type of BOILERS Criteria for boiler selection22 Lets look at what the Merriam-Webster dictionary says the boiler is a boiler ? A boiler is a closed metal container (pressure vessel) in which water is heated to produce steam and heated water3 boiler Classifications Low Pressure: Section IV of ASME Code (Heating boiler ) Steam: Up to 15 PSIG Water:Up to 160 PSIG and or 250 F High Pressure: Section I (Power boiler ) of ASME Code Steam: Above 15 PSIG Water: Above 160 PSIG and or 250 F5 boiler efficiency Classification Standard efficiency (80-84%) Most Steel and Cast Iron BOILERS Mid efficiency (85-90%) Copper Fintube BOILERS High efficiency (90%+) Condensing Boilers6 Non-Condensing4 Defining boiler efficiency Combustion efficiency - indicates a burners ability to

4 Defining Boiler Efficiency • 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

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  Efficiency, Step, 2014, Boiler, Website, Aee boilers 101, Sept 2014

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