BOILERS
CONDENSING BOILERS
Types: Condensing and near-condensing hydronic boilers
Capacity: 300,000 to 12 million BTU input
Typical uses/applications: Comfort heating and low temperature process loads. Typically used in schools, decentralized institutional facilities, apartments and other commercial buildings.
Fuel types: Natural gas, propane
FIRETUBE BOILERS
Types: Dryback or Wetback in two, three, and four-pass designs
Capacity: 15 to 2,200 HP
Typical uses/applications: Wide array of uses from hot water and low pressure steam heating loads to process loads. Typically seen in heating loads when oil firing is required, or the load is large. Commonly used in Central Utility plants in hospitals, food processing facilities, corrugators or other heavy duty applications.
Pressure: 15 PSIG to 350 PSIG
Fuel types: Natural gas, propane, all grades of oils, combination gas/oil, non-standard fuels such as off gases and waste oil
COMMERCIAL WATERTUBE BOILERS
Types: Straight tube; flextube, membrane wall type
Capacity: ½ million BTU to 18 million BTU
Typical uses/applications: Wide range of uses from hot water and low pressure steam heating loads to process loads. Typically used in hybrid heating systems and when oil firing is required, and for smaller process loads.
Pressure: 15 PSIG to 400 PSIG
Fuel types: Gas, light oils, combination
INDUSTRIAL WATERTUBE BOILERS
Types: D, O, A, and external drum designs
Capacity: From 10,000 LBS/Hr to 500,000 LBS/Hr
Typical uses/applications: Central steam plant and process loads. Used when large capacity or high pressures are required.
Pressure: 150 PSIG to 1500 PSIG
Fuel types: Natural gas, all grades of oils, combination gas/oil, non-standard fuels such as off gasses and waste oil
ELECTRIC BOILERS
Types: Immersion element and electrode
Power: 120 volt to 13.4 Kv
Typical uses/applications: Small units used when venting is not possible and for point-of-use steam loads. Large units used when electric rates are competitive and emissions or other factors favor.
Capacity: From 35,000 BTU to 100,000 LBS/Hr
HEAT RECOVERY BOILERS
Types: HRSG, firetube, watertube
Typical uses/applications: Used when high amounts of hot waste gas is available such as on a turbine or process exhaust.
Capacity: from 5,000 LBS/Hr to 100,000 LBS/Hr
Manufacturers
