Non-electromechanical, pumpless liquid recirculation system for air-cooled condenser and cooler adiabatic pre-cooling system

Abstract

A non-electromechanical, pumpless liquid recirculation system for adiabatic pre-cooling and evaporative heat exchange systems featuring an ejector device including motive fluid nozzle and an annular recirculating fluid chamber surrounding the nozzle. Motive make-up liquid under pressure is expelled from the nozzle into a mixing chamber. Recirculating fluid is introduced to and entrained with the motive make-up liquid at the outlet of the nozzle, and the motive force of the make-up liquid forces the combined make-up liquid and recirculating liquid out through the outlet of the ejector device to a water distribution system for the heat exchange system.

1 . A non-electromechanical liquid ejector comprising a make-up liquid chamber having an end port at a first end and a narrowed nozzle at a second end, an annular chamber located on an outside surface of said narrowed nozzle, said annular chamber in liquid communication with a source of recirculating fluid via a side port of said ejector, said annular chamber terminating at an outlet of said narrowed nozzle, and a mixing chamber located downstream of said outlet of said narrowed nozzle. 
     
     
         2 . An adiabatic pre-cooling system for an air-cooled condenser or cooler having no electromechanical pump, said adiabatic pre-cooling system comprising:
 a plurality of adiabatic pads mounted on said air-cooled condenser or cooler,   a water distribution system mounted above said plurality of adiabatic pads,   a water collection device mounted below said plurality of adiabatic pads,   a recirculation tank located and configured to receive water from said water collection tray,   a non-electromechanical liquid ejector comprising a make-up liquid chamber having an end port at a first end and a narrowed nozzle at a second end, an annular chamber located on an outside surface of said narrowed nozzle, said annular chamber in liquid communication with a source of recirculating fluid via a side port of said ejector, said annular chamber terminating at an outlet of said narrowed nozzle, and a mixing chamber located downstream of said outlet of said narrowed nozzle,   a make-up water supply under pressure and configured to deliver make-up water under pressure to said end port of said non-electromechanical liquid ejector.