Circulating aspirator with improved temperature control

摘要

The water aspirator system includes a reservoir capable of retaining a body of water and an aspirator circuit comprising a pump external to the reservoir and connected through an inlet line arranged to draw water from the reservoir and a discharge line arranged to return water to the reservoir. At least one aspirator is provided on the discharge line. A cooling circuit is provided which draws water from the reservoir into a heat exchanger where the water thus drawn is cooled, and for returning water thus cooled to the reservoir. The heat exchanger consists of an air cooled finned heat exchanger and the reservoir has a bottom and side walls and a designated nominal water level. The pump is connected to the reservoir to draw water from a location at or adjacent to the bottom and to return water to a location above the designated nominal water level.