Horizontal spiral tube boiler convection pass enclosure design
AssigneeThe Babcock & Wilcox Company
InventorsMelvin J. Albrecht, J. William Smith
Life of this patent
Estimating the term…
Abstract
A convection pass enclosure for a boiler comprising a front wall having a gas inlet for receiving gases from the boiler; right and left side walls connected to the front wall; a rear wall having a gas outlet, the rear wall being connected between the right and left side walls; and a roof, at least one of the front wall, right side wall, left side wall and rear side wall having a heat exchanger surface in the form of a horizontal spiral tube assembly.
Claims15
A boiler comprising a furnace chamber, a convection pass enclosure located downstream flue gas flow-wise of the furnace chamber, the convection pass enclosure having a heat exchange fluid flow circuitry that includes front, rear and side walls, the front wall having a gas inlet for receiving flue gases from the furnace chamber, the rear wall having a gas outlet for discharging flue gases from the convection pass enclosure, the improvement comprising:
- at least one of the front, rear, and side walls being lined with a horizontal spiral tube arrangement;
- an inlet header connected to one end of the horizontal spiral tube arrangement for supplying heat exchange fluid thereto;
- and
- an outlet header connected to the other end of the horizontal spiral tube arrangement for discharging heat exchange fluid therefrom.
Dependencies are inferred from the claim text.