Water heating apparatus
AssigneeWeben-Jarco, Inc.
InventorKevin J. Stuart
Life of this patent
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Abstract
A radially fired water heating apparatus (10) having a plurality of stacked segments of multiple-loop, finned coiled tubing (58) separated by inner and outer support baffles (86, 88), all contained within a cylindrical baffle (20) which cooperates with the coiled tubing (58) and support baffles (86, 88) to direct combustion by-products into an annulus (24) promoting heat transfer to a countercurrent flow of inlet air, the water being supplied to and recovered from the stacked segments of coiled tubing (58) through inlet and outlet headers (54, 56) disposed outside cylindrical baffle (20) that can be selectively modified by installing or removing baffles (90, 92) for either single-pass or multiple-pass operation.
Claims16
A water heating apparatus comprising a housing;
- a radially fired burner member within the housing;
- a plurality of vertically spaced, multiple-loop, finned coil tubing means for circulating water around the burner member;
- horizontally disposed, circumferentially extending flue gas baffle means for separating and supporting the coil tubing means;
- inlet and outlet water headers disposed radially outward of the coil tubing means and providing fluid communication therewith;
- and partitioned annular means disposed radially outward of the coil tubing means but within the housing for establishing countercurrent flows of flue gas and inlet air, and for conducting heat from the flue gas to the inlet air.
A radially-fired water heating apparatus comprising a housing;
- radially-fired burner means for combusting fuel and air to produce flue gas;
- a plurality of vertically spaced, multiple-loop coil tubing segments disposed around the radially-fired burner means at a distance from the burner means that will facilitate impingement heating of the tubing segments;
- each tubing segment having at least two substantially coplanar tubing loops, an inlet end and an outlet end, both ends extending radially beyond the tubing loops, the outlet end being elevationally adjusted a sufficient distance to provide vertical clearance with respect to the tubing loops;
- inlet and outlet manifold means connected respectively to the inlet and outlet ends of each coil tubing segment, and means for circulating water through the manifold means and the coil tubing segments;
- and at least one substantially horizontal support baffle disposed between adjacent vertically spaced coil tubing segments.
Dependencies are inferred from the claim text.