Abb Air Preheater Inc.

Combustion Engineering, Inc.

The Air Preheater Company, Inc.

Thomas Gary Mergler

Wayne S Counterman

William C Cox

James P Cronin

A trisector air preheater includes sector plates between the primary air sector and the flue gas sector and between the secondary air sector and the flue gas sector which are of a large size so as to provide double radial seals. However, the sector plate between the primary and secondary air sectors is small and provides only a single radial seal. The one smaller sector plate reduces the pressure drop through the air preheater while sacrificing increased leakage only between air sectors. The axial seal between the primary and secondary air sectors may be maintained at a double seal size.

Sector plate and seal arrangement for trisector air preheater

A sealing arrangement for a quad sector rotary regenerative air preheater has a rotor rotatably mounted in a housing. The rotor has radially extending diaphragms forming compartments and radial seals extending along the edges of the diaphragms. Sector plates are positioned at the axial ends of the rotor to divide the preheater into a flue gas sector, a primary air sector and a first secondary air sector adjacent said flue gas sector and said primary air sector, and a second secondary air sector positioned adjacent said flue gas sector and said primary air sector. The sector plates between the flue gas sector and said secondary air sectors are in sealing engagement with two of the radial seals at all times and the sector plates between the primary air sector and the secondary air sectors are in sealing engagement with only one of the radial seals at any particular time.

Variable sector plate quad sector air preheater

A heat pipe air preheater includes a multiplicity of heat pipes arranged in a plurality of superposed planar rows inclined relative to the horizontal, the rows of heat pipes including a first group of rows inclined at a first inclination angle and a second group inclined at a second inclination angle. Means are provided for removing collections of soot or other particulate matter from the evaporator ends of the heat pipes, the rows of the first group being disposed on one side of these means while the rows of the second group are disposed on the other side, the rows of the two groups converging in the direction of the heat pipe condenser ends.

Dual angle heat pipe air preheater

A heat pipe is formed of two elongated tubular members each having an open end and a closed end and joined at their open ends in gas-tight relationship by means of an annular collar. The annular collar is adapted at one end to fit over the open end of one of the elongated tubular members and at its other end to fit over the open end of other of the elongated tubular members, with the ends of the annular collar being sealably secured, such as by welding, bonding, threading or otherwise, to their respective tubular members thereby providing a gas-tight enclosure within the interconnected tubular which constitutes the working chamber of the heat pipe. Advantageously, the two elongated tubular members may be formed of dissimilar materials. For example, one tubular member may be formed of a more expensive material having a relatively high corrosion resistance and the other tubular member may be formed of a less expensive material having a relatively low corrosion resistance.

Heat exchanger and heat pipe therefor

An element basket assembly (30) for a rotary regenerative heat exchanger (2) comprised of a plurality of heat transfer element plates (32) stacked in an array between first and second end plates (34,36) disposed at opposite ends of the stacked array of heat transfer element plates (32). Upper and lower side straps (40,42 and 50,52) run along opposite sides of the stacked array of heat transfer element plates, to interconnect the first and second plates (34,36) to form the frame of the element basket housing the heat transfer element plates. A stiffening member (60) is disposed intermediate the spaced end plates (34,36) to extend transversely across the element basket assembly at or near the mid-span thereof the interconnect the upper side straps (40,42) and to interconnect the lower side straps (50,52) thereby increasing the structural integrity of the basket assembly.

Growing community of inventors

Bolivar, NY, United States of America

Thomas Gary Mergler