Landfill gas extraction systems and methods
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United States of America Patent
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Sep 10, 2024
Grant Date -
Apr 13, 2023
app pub date -
Oct 4, 2022
filing date -
Oct 1, 2018
priority date (Note) -
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Abstract
A control system for controlling extraction of landfill gas from a landfill via a gas extraction system, the gas extraction system comprising well piping for coupling a plurality of wells to a gas output. The control system comprises a controller configured to: obtain a value indicating measured energy content of landfill gas collected at the gas output from the plurality of wells; determine whether the measured energy content is different from a target energy content; and in response to determining that the measured energy content is different from the target energy content: control a plurality of valves disposed in the well piping to change flow rates of landfill gas being extracted from at least some of the plurality of wells at least in part by changing degrees to which the plurality of valves are open.
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