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Warmwasserbereiter

Water heater
 
: Ledjeff, K.; Schuler, A.; Gieshoff, J.

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Frontpage ()

DE 1992-4204320 A: 19920213
DE 1992-4204320 A: 19920213
EP 1993-902068 AW: 19930127
WO 1993-DE79 W: 19930727
DE 4204320 C1: 19930812
EP 625255 B1: 19960612
F24H0001
German
Patent, Electronic Publication
Fraunhofer ISE ()

Abstract
A water heater has a gas inlet (8) for a combustible gas and air mixture and an inlet for a fluid to be heated (11, 18) which is partially surrounded by at least one fluid chamber (4, 7) filled with the fluid (2). The exhaust gas emerging from the combustion chamber or chambers (11, 18) flows through the exhaust heat exchanger together with the fluid (2). Thereby, there are two combustion stages, whereby the first combustion stage (16) is a catalytic splitting burner (11) and the second combustion stage (20) is a monolithic burner (18, 19). As a result of the two- stage arrangement, about 80 percent of the combustible gas is converted in the first stage (16), whereby the remaining combustible gas components are themselves converted practically without any residue at the prevailing low partial pressures in the second stage (20), in particular without NO<-x emissions.

: http://publica.fraunhofer.de/documents/PX-41169.html