Flue gas recycle system with fixed orifices
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United States of America Patent
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May 29, 2018
Issued Date -
N/A
app pub date -
Jul 6, 2012
filing date -
Jul 6, 2012
priority date (Note) -
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Abstract
A system for providing combustion air and fuel gas to a premix burner includes a premix engine, a premix burner in fluid communication with an outlet of the premix engine, an exhaust flue, a flue gas recirculation line in fluid communication with the flue and an inlet of the premix engine, and a fresh air line in fluid communication with a source of fresh air and the inlet of the premix engine. A flue gas flow restrictor is installed in the flue gas recirculation line, and a fresh air flow restrictor is installed in the fresh air line. The flow restrictors are sized so that the premix engine, in operation, draws recycled flue gas and fresh air from the recycled flue gas line and fresh air line, respectively, in a predetermined proportion.
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