The York Shipley Global Series 400C and 500C three- and four-pass dry-back design accommodates moderate BTUH/CF (Mcal/m³) volumetric furnace heat release rates in comparison to competitive dry-back configurations. The centerline furnace construction reduces vessel thermal stresses.
York-Shipley Global dry-back boilers employ a completely submerged self cleaning centerline furnace which permits for scale formation from water bound solids to drift to the bottom of the boiler for removal during blowdown procedures. The flue gas 'down-draft' design forces hot gases through the lower part of the boiler where cooler water accumulates. Fire-side and water-side access is readily provided. Top longitudinal level service platform ensures safe and secure access, while bottom longitudinal inspection trough ensures unencumbered visual access.
The large water volume, as well as a liberal steam disengaging and storage space provides superior performance during continuous and swing load operation. Units include split front and rear fire-side access doors with internal insulation available with heavy duty pivoting hinge arrangements.
Series 400C and 500C Packaged Firetube Boilers
York-Shipley Global offers its packaged firetube boiler utilizing a centerline furnace design. Series 400C comprising 4SF-FSHS/BHP (.037m² - FSHS/kW), and Series 500C comprising 5SF-FSHS/BHP (.046m² - FSHS/kW), are available as a three-and four-pass, dry-back configuration. All steel fireside surfaces are completely water-backed. York-Shipley Global product is supported through an extensive worldwide network of sales, service and regional management representatives.
3D (3-Pass Dry-Back)
4D (4-Pass Dry-Back)
Uniform Stress Design Increases Unit Life
The York-Shipley Global’s centerline furnace design incorporates two tube-sheets and a centrally located furnace achieving the most uniform stress for a firetube boiler. This feature therefore increases boiler useful life.
Down-Draft Design Promotes Heat Transfer
Standard three- and four-pass, down-draft design using a smaller number of firetubes in succeeding passes, promotes a high but even velocity of combustion gases and helps to maintain clean firetubes, resulting in maximum heat transfer in the firetube passes.
Complete Water Circulation Over All Tubes and Furnace
Natural water circulation is unrestricted, and non-dissolved solids can fall to the bottom evenly. They remain semi-fluid and can be flushed easily through the bottom blowdown maintenance procedures. Thermally induced circulation further reduces material thermal stress, again maximizing service life.
Easily Serviced and Maintained
York-Shipley Global’s 3-section rear cover arrangement permits complete accessibility of all firetubes and the furnace. Firetubes may be cleaned or replaced from either end of the boiler, allowing maximum flexibility in boiler room design and boiler location. A secure level platform provided on top of boiler prevents casing damage during maintenance and inspection.
