Heat-activated multiphase fluid-operated pump
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United States of America Patent
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Feb 13, 2024
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N/A
app pub date -
Sep 10, 2021
filing date -
Sep 10, 2020
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Abstract
A heat-activated multiphase fluid-operated pump. A hot chamber receptive of externally applied heat converts a working fluid into vapor. A pressure-control valve allows vaporized working fluid to escape the hot chamber only when a target pressure is exceeded. A liquid-piston chamber receives the vaporized working fluid, which expands adiabatically to displace pumped liquid within the liquid-piston chamber in a pump stage, expelling it through an exit port having a unidirectional check valve. A condenser receives the displaced liquid and allowing it in a suction stage to return to the liquid-piston chamber through another unidirectional check valve. An injector valve coupled between the liquid-piston chamber and the hot chamber facilitates jets of condensed working fluid to replenish the hot chamber in successive brief spurts responsive to periodic pressure pulses in the liquid-piston chamber that temporarily exceed the pressure in the hot chamber.
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