Boilers: Combustion Water and Steam

Describe the parts and operation of typical gas burners oil burners and stokers. Identify some devices used to improve the efficiency of boiler operations. Explain how air flow is produced in a typical boiler. Explain why changes in boiler load require fuel and air adjustments. State why it is necessary to maintain a proper fuel-to-air ratio in a boiler. Describe the parts and basic operation of a typical rotary air heater. Explain how rotary air heaters improve efficiency of boiler operations. Explain how natural circulation occurs in a typical water-tube boiler. Explain how controlled circulation occurs in a typical water-tube boiler. Describe an economizer why it is used and how it improves efficiency. Name some devices commonly used to remove moisture from steam and how they operate.