Patent ID: 9127639
Filing Date: 2015-09-08
Classification: F03B,Y02E,Y10T

Abstract:
1. A fluid expulsion system for expelling working fluid from a hydropower plant having an energy conversion device, comprising: a venturi tube including an upstream conduit positioned to receive a primary flow of working fluid having a hydrostatic head pressure at a depth in a body of working fluid, a throat section, a diverging section positioned downstream of said throat section, and a converging section leading to a conduit configured to deliver a working fluid stream including a portion of the primary flow of working fluid for hydropower generation; a recirculation circuit fluidly connected to said throat section to recirculate a recirculation flow of working fluid from downstream of said energy conversion device to the throat section to combine with said primary flow to form a combined flow; and a discharge passage positioned at an end portion of the diverging section to receive a portion of said combined flow from said diverging section to form a discharge flow for expulsion to the body of working fluid.