Systems and methods for heating water using biofuel
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United States of America Patent
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Aug 25, 2015
Grant Date -
Feb 9, 2012
app pub date -
Aug 8, 2011
filing date -
Aug 6, 2010
priority date (Note) -
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Abstract
The present invention may be embodied as a biofuel heating system for converting biofuel to heat energy to be delivered to a load comprising a combustion chamber defining a combustion zone, an under-fire zone, and an over-fire zone. A controller operates at least one of a fan, an under-fire damper, and an over-fire damper based on at least one operating parameter such that air flows along a flow path extending from at least one of an under-fire port and an over-fire port, through the combustion chamber, through a burn-out port, through a burn-out chamber, through a heat exchange port, through a heat exchange chamber, and out of an exhaust port. The heat exchange system transfers heat energy from air flowing through the heat exchange chamber to the working fluid.
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