Devices and techniques relating to landfill gas extraction
First Claim
1. A control system for controlling extraction of landfill gas from a landfill via a gas extraction system, the gas extraction system comprising at least one vacuum source, well piping, and at least one well coupled to the at least one vacuum source through the well piping, the control system comprising:
- at least one atmospheric pressure sensor configured to measure atmospheric pressure;
at least one flow control mechanism disposed in well piping and configured to control flow of the landfill gas through the well piping; and
at least one processor configured to perform;
obtaining a first atmospheric pressure value based on at least one first measurement obtained by the at least one atmospheric pressure sensor;
obtaining a second atmospheric pressure value based on at least one second measurement obtained by the at least one atmospheric pressure sensor after obtaining the at least one first measurement;
determining whether the second atmospheric pressure value is greater than the first atmospheric pressure value;
when it is determined that the second atmospheric pressure value is greater than the first atmospheric pressure value, controlling the at least one flow control mechanism to decrease the flow rate of landfill gas being extracted from the landfill; and
when it is determined that the second atmospheric pressure value is less than the first atmospheric pressure value, controlling the at least one flow control mechanism to increase the flow rate of landfill gas being extracted from the landfill.
2 Assignments
0 Petitions
Accused Products
Abstract
A control system for controlling extraction of landfill gas, the system comprising: at least one atmospheric pressure sensor configured to measure atmospheric pressure; at least one flow control mechanism disposed in well piping and configured to control flow of the landfill gas through the well piping; and at least one processor configured to perform: obtaining a first atmospheric pressure; obtaining a second atmospheric pressure value; determining whether the second atmospheric pressure value is greater than the first atmospheric pressure value; when it is determined that the second atmospheric pressure value is greater than the first atmospheric pressure value, controlling the at least one flow control mechanism to decrease the flow rate of landfill gas; and when it is determined that the second atmospheric pressure value is less than the first atmospheric pressure value, controlling the at least one flow control mechanism to increase the flow rate of landfill gas.
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Citations
18 Claims
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1. A control system for controlling extraction of landfill gas from a landfill via a gas extraction system, the gas extraction system comprising at least one vacuum source, well piping, and at least one well coupled to the at least one vacuum source through the well piping, the control system comprising:
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at least one atmospheric pressure sensor configured to measure atmospheric pressure; at least one flow control mechanism disposed in well piping and configured to control flow of the landfill gas through the well piping; and at least one processor configured to perform; obtaining a first atmospheric pressure value based on at least one first measurement obtained by the at least one atmospheric pressure sensor; obtaining a second atmospheric pressure value based on at least one second measurement obtained by the at least one atmospheric pressure sensor after obtaining the at least one first measurement; determining whether the second atmospheric pressure value is greater than the first atmospheric pressure value; when it is determined that the second atmospheric pressure value is greater than the first atmospheric pressure value, controlling the at least one flow control mechanism to decrease the flow rate of landfill gas being extracted from the landfill; and when it is determined that the second atmospheric pressure value is less than the first atmospheric pressure value, controlling the at least one flow control mechanism to increase the flow rate of landfill gas being extracted from the landfill. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling extraction of landfill gas from a landfill via a gas extraction system, the gas extraction system comprising at least one vacuum source, well piping, and at least one well coupled to the at least one vacuum source through the well piping, the method comprising:
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obtaining a first atmospheric pressure value based on at least one first measurement obtained by at least one atmospheric pressure sensor; obtaining a second atmospheric pressure value based on at least one second measurement obtained by the at least one atmospheric pressure sensor after obtaining the at least one first measurement; determining whether the second atmospheric pressure value is greater than the first atmospheric pressure value; when it is determined that the second atmospheric pressure value is greater than the first atmospheric pressure value, controlling at least one flow control mechanism to decrease flow rate of landfill gas being extracted from the landfill; and when it is determined that the second atmospheric pressure value is less than the first atmospheric pressure value, controlling the at least one flow control mechanism to increase the flow rate of landfill gas being extracted from the landfill. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification