Pumps – Processes – Of pumping one fluid by contact or entrainment with another
Patent
1979-11-16
1982-01-12
Gluck, Richard E.
Pumps
Processes
Of pumping one fluid by contact or entrainment with another
417 87, 417125, F04F 544
Patent
active
043102875
ABSTRACT:
A method for operating a water-jet pump, in which the water needed for operation of the pump is recirculated in a cycle. The water is pressurized by means of compressed air at a substantially constant air pressure and the compressed air is used to drive out the water through the water-jet pump. Expanding the compressed air in a defined expansion space withdraws heat from the water by absorbing such heat in the air during and after its expansion. Apparatus for operating a water-jet pump includes a pair of ejecting receptacles and a first water valve for alternate connection of the ejecting receptacles to the pressure side of the water-jet pump. Second water valves return to the ejecting receptacles water which has been discharged from the water-jet pump. A first compressed air valve connects a compressed air source alternately to the ejecting receptacles and a second compressed air valve alternately connects the ejecting receptacles to an expansion vessel for expanding and thereby dropping the pressure of compressed air from the connected one of the ejecting receptacles. Expansion of the compressed air in the expansion vessel cools the water circulated through the water-jet pump, in one embodiment by immersion of the expansion vessel in such water and in another embodiment by spraying of a portion of such water into the expansion vessel.
REFERENCES:
patent: 475111 (1892-05-01), Henderson et al.
patent: 2249621 (1941-07-01), Schlumbohm
patent: 2702664 (1955-02-01), Pienaar
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