313-2 Bottom Entry Siphon Type System

Category

Construction

Description

The BEST packaged power station provides an inexpensive and environmentally friendly method of extracting low head energy from rivers and streams where there is a drop of 2 to 8 metres to over distances to 100 metres, and 10 to 200 kilowatts is desired. The water turbine employing a fish-friendly runner is mounted horizontally in a turbine house complete with generator and controls with the turbine's intake facing downward toward a trash-rack system used to screen the incoming water.

Features & Advantages

• The heat generated in the turbine house is directed to the trash-racks to keep them ice free in cold climates.
• The trash racks are monitored by the control system to enable the vacuum to be broken so that the water in the turbine and intake will backwash the trash-racks removing the debris.
• Air entrainment in the siphon loop is reduced as the turbine breaks up the air at the top of the siphon loop into small bubbles and distributes them in a rotating water column to be carried down and out the draft tube.
• The horizontal turbine is dry and readily accessible to ease repair and maintenance.
• Very little if any civil works are needed making the station easy to site and if the station is removed there is no scaring of the landscape.
• The turbine rotates the incoming water stream without the use of stationary vanes which would interfere with the passage of fish. The water's energy is extracted under vacuum using a low velocity, low flow runner that allows passing fish to avoid collision with the runner blades.
• Provision of strobe light and noise on the turbine intake can easily repel fish from the trash-rack area.
• All mechanical components are in a visually attractive soundproofed housing.
• No oil is used in the station. The turbine bearings are lubricated with environmentally friendly grease.
• The horizontal trash-racks reduce the depth of head-pond needed to draw water into the turbine house.

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Technology Owner

Rapid-Eau Technologies Inc. 

Country

Canada

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