Apparatebau Rothemuhle Brandt & Kritzler Gmbh

Apparatebau Rothemuhle Brandt & Kritzler Gesellschaft MIT Besehrankter

Gerhard Kritzler

Siegfried Hans-Dietmar Schluter

Paul Eckert

A regenerative heat-exchanger is disclosed which has a rotor mounted in an enclosing housing, with separation zones radially disposed between the heat exchange media and configured as peripheral and radial barrier chambers, and stationary peripheral and radial seals which are arranged on hot and cold sides of the rotor.

Regenerative heat exchanger and method of operating the same

Regenerative heat exchanger

A heat exchange element for a rotary regenerative heat exchanger has corrugations of a wave-form conformation which include portions, extending between 10% and 50% of the wave length, which are parallel to the direction of flow of medium through the pack. Comparative data are given showing better efficiency in terms of heat-exchange effectiveness versus pressure loss than for apparently analogous prior art elements.

Heat exchange elements

A stationary-mass rotary regenerative air preheater uses a single regenerative mass for the separately controllable heating of different streams of air. This is achieved by providing at each axial end face of the mass rotating cowls divided into rotationally symmetrical hoods each of which is sub-divided into sector-shaped compartments which have the same radial extent as the mass. A given compartment of one hood on one end face is angularly of the same extent as the corresponding compartment of the other hood on that end face. The compartments are brought to coaxial connecting ducts at the neck of each cowl. Separation of media flows even under temperature or pressure differences is assured by sealing strips at each of the radially extending walls of each hood; these are automatically operated, and those on internal (sub-dividing) walls may be operatively linked to those on external walls.

Regenerative air preheater for separate preheating of two or more air-or

Gas treatment such as scrubbing or purificatory heating is carried out by treatment means in permanent gaseous communication with one end face of a rotary regenerative heat exchanger. At the other end face conventional inlet and outlet gas collecting arrangements are provided. A plenum chamber beyond or containing the treatment means allows for flow reversal of the gas treated, so that it may repass through the heat exchanger. Since collecting arrangements are provided at only one end face, the concomitant sealing arrangements need only be provided at that end face, and the rest of a support structure for the heat exchange mass (and which may also support at least some of the further treatment means) may be made of materials chosen solely with a view to resisting the physical and/or chemical conditions likely to be encountered.

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Freudenberg, Germany

Gerhard Kritzler