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 Effici

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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