Burner having porous material of varying porosity

US5522723A · kind A · utility

Assignees

• Franz Durst · DE
• Dimosthenis Trimis · DE
• Applikations-und Technikzentrum fur Energieverfahrens-Umwelt-und Stromungstechnik (ATZ-EVUS) · DE

Inventors

• Franz Durst · Langensendelbach, DE
• Dimosthenis Trimis · Erlangen, DE
• Gerold Dimaczek · Erlangen, DE

Key dates

• Filing date: Mar 1, 1995
• Grant date: Jun 4, 1996
• Expiry date: Mar 1, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F24H1/0045
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A burner with a housing enclosing a combustion chamber and with an inlet for a gas/air fuel mixture and an outlet for combustion gas is disclosed. The combustion chamber is filled with a porous material whose porosity varies along the combustion chamber in such a way that the pore size increases in the direction of flow of the gas/air mixture so that a critical Peclet number for the pore size and accordingly for flame development results at a boundary surface or in a determined zone of the porous material, above which number a flame can develop and below which number the flame development is suppressed.