Extracting power from a fluid flow

US7150149B2 · kind B2 · utility

Assignee

• Hydroventuri Limited · GB

Inventors

• Geoffrey Kenneth Rochester · London, GB
• Keith Robert Pullen · London, GB

Key dates

• Filing date: Mar 19, 2003
• Grant date: Dec 19, 2006
• Expiry date: Mar 19, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for extracting power from a fluid flow comprising a fluid driveable engine, a fluid directing arrangement defining a channel in the flow of a primary fluid, the channel with a flow accelerating constriction shaped. The primary fluid accelerates as it passes through the flow accelerating constriction, the arrangement being formed to impart a rotational flow component to the primary fluid entering the constriction thereby creating a radial pressure gradient in the primary fluid as it passes through the constriction. A conduit for directing flow of a driving fluid different from the primary fluid and in fluid communication with the engine and a portion of the channel having accelerated fluid flow. Flow of driving fluid through the conduit drives the engine and delivers driving fluid to the fluid directing arrangement such that it is drawn substantially along the central axis of the rotational flow.