Fluid pressure exchange mechanism and method of operating same
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United States of America Patent
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Nov 13, 2012
Grant Date -
Jul 23, 2009
app pub date -
Nov 14, 2006
filing date -
Nov 15, 2005
priority date (Note) -
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Abstract
A device and method configured to exchange pressures between fluid streams as a way to reuse the pressure energy of one of the fluids. The device includes a rotatable valve that fluidly cooperates with pressure exchange ducts so that a high pressure fluid stream flows into a high pressure exchange duct to displace a duct piston contained therein so that a fluid within this duct that is downstream of the piston is pressurized. At the same time, a low pressure fluid stream is introduced into a low pressure exchange duct to displace a duct piston contained therein so that a fluid within this duct that is downstream of its piston is pressurized. Rotation of the valve fluidly couples the pressurized fluid from the high pressure duct to the low pressure duct while the fluid from the low pressure duct becomes fluidly coupled to the high pressure duct.
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