High temperature rise makeup air unit

Details High temperature rise makeup air unit High temperature rise makeup air unit

2006-01-10

2006-01-10

Lu, Jiping (Department: 3749)

Combustion

Flame holder having protective flame enclosing or flame...

C431S351000, C431S352000, C432S222000

Reexamination Certificate

active

06984124

ABSTRACT:
A direct-air, gas-fired air makeup heating unit is disclosed which provides reduced nitrogen dioxide emissions with a higher temperature rise. The unit includes a combustion chamber with a protective chamber downstream of the combustion chamber. At high firing intensity, the flame exits the combustion chamber and enters the protective chamber. The resulting flame is therefore protected from excess air moving around the combustion chamber, thereby lowering nitrogen dioxide emissions even at such high firing intensities.

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patent: 6394795 (2002-05-01), Fayerman et al.
patent: 6526964 (2003-03-01), Potter et al.
patent: 6558533 (2003-05-01), Schmidt et al.
patent: 6564794 (2003-05-01), Zia et al.
patent: 6598599 (2003-07-01), Takeuchi
patent: 6599119 (2003-07-01), Wood et al.

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