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Boilers - Classification

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According the "ASME Boiler and Pressure Vessel Code" boilers may be classified as

Section I Power Boilers - process boilers, power boilers and high pressure boilers

  • boilers in which steam or other vapor is generated at a pressures exceeding 15 psig
  • high temperature water boilers intended for operation at pressures exceeding 160 psig and or temperatures exceeding 250 degrees F

Section IV Heating Boilers - commercial boilers, industrial boilers, heating boilers, low pressure boilers

  • boilers in which steam or other vapor is generated at a pressures not exceeding 15 psig
  • high temperature water boilers intended for operation at pressures not exceeding 160 psig and or temperatures exceeding 250 degrees F
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Related Topics

• Heating Systems

Design of heating systems - capacities and design of boilers, pipelines, heat exchangers, expansion systems and more.

• Steam and Condensate

Design of steam & condensate systems with properties, capacities, sizing of pipe lines, system configuration and more.

Related Documents

ASME - International Boiler and Pressure Vessel Code

The International Boiler and Pressure Vessel Code safety rules governing design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction.

Boiler - Efficiency

Combustion gross and net calorific value.

Boiler Blowdown

Suspended solids in the feed water will remain in the boiler when steam is generated.

Boiler Blowdown Rate

Calculate boiler blowdown rate.

Boiler Horsepower

Boiler horsepower vs. heat transfer area.

Boiler Rooms - Sizing

Minimum area in a boiler room.

Combustion Processes and Combustion Efficiency

Typical furnace combustion efficiencies in fireplaces, space heaters, boilers and more.

High Pressure Steam Systems - Safety Valve Capacities

Sizing safety valves according boiler output power in high pressure systems (kW and Btu/hr)

Intermittent Combustion and Boiler Efficiency

Efficiency reduction due to intermittent boiler operation.

Steam Boiler Rating vs. Feed Water Temperature

Boiler output vs. feed water temperature.

Steam Boiler Shells - Stress vs. Boiler Pressure

Calculate the stress in steam boiler shells caused by steam pressure.

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