| 摘要 |
A thermoacoustic Power generator (3) for generating electricity within or in the vicinity of a gas transportation conduit (2), such as a production tubin g in a gas production well, comprises an acoustic resonance cavity (7) having an inlet (8) formed by an orifice in the wall of the conduit (2) or of equipmen t arranged within the conduit (2) to create a standing acoustic wave in the resonance cavity (7) in response to the gas flow in the conduit (2), and a permeable body (9) in the resonance cavity (7) in which body cold and/or hot spots are formed as a result of adiabatic expansion or compression. A thermoelectric device 10, such as a Peltier element, is connected to said co ld and/or hot spots formed in the permeable body (9) to generate electrical Pow er in response to the resulting temperature decrease or increase of the permeab le body (9), which may exceed 50 ~C.
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