F - Mech Eng,Light,Heat,Weapons – 23 – N
Patent
F - Mech Eng,Light,Heat,Weapons
23
N
F23N 3/04 (2006.01) F23L 15/04 (2006.01) F28D 15/02 (2006.01) G05D 23/13 (2006.01)
Patent
CA 2077786
PROTECTION SYSTEM FOR HEAT PIPE AIRHEATERS ABSTRACT OF THE DISCLOSURE A plant having a combustion chamber can employ at least one heat pipe. The heat pipe is mounted to exchange heat between flue gas in a flue gas path and combustion air in a combustion air path. A protection system has a dual passage for separately conducting the flue gas and the combustion gas. The dual passage has a wall separating the flue gas path from the combustion air path. The heat pipe is mounted through the wall. A sensor is mounted about the heat pipe for providing a temperature signal signifying the temperature at the heat pipe. A damper is coupled to the sensor and communicates with the dual passage for mixing relatively cooler air with the flue gas in the dual passage, upstream of the heat pipe, in response to the temperature signal violating a predetermined limit.
Finlayson & Singlehurst
Foster Wheeler Energy Corporation
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