Trompe

– Operation:
– Trompes consist of four main parts: water-supply pipe, shaft with an air-inlet, water outflow pipe, separation chamber, and takeoff air-pipe.
– Water rushing down the vertical pipe falls through a constriction, creating a lower pressure due to the venturi effect.
– The compressed air produced rises to the top of the separation chamber for usage as a power source.
– The falling water’s energy creates a partial vacuum inside the pipe, compensated by external air.
– Compressed air temperature and water vapor pressure depend on the water’s temperature.

– Usage:
– Large trompes were often located at high waterfalls to utilize ample head pressure.
– Trompes can raise water nearly 70% of its initial elevation via siphon-effect.
– Plastic pipe trompes are used for mine drainage treatment aeration.
– Compressed air from trompes can oxygenate mine water and drive off excess dissolved carbon dioxide.
– Trompes are related to the Sprengel vacuum pump, which uses mercury to create a vacuum.

– Applications:
– Trompes are used to provide compressed air for bloomery furnaces in Catalonia and the USA.
– Canadian Hydro Developers’ Ragged Chute facility in Ontario uses a trompe to generate compressed air for mining equipment.
– Trompes are used in modern times for mine drainage treatment aeration.
– Trompes can produce dry, cool compressed air by passing it through warm pipes.
– Compressed air from a trompe is limited by the hydraulic head of the discharge pipe.

– Related Concepts:
– Trompes are closely related to the Sprengel vacuum pump, utilizing mercury to create a vacuum.
– Trompes are a signature attribute of a Catalan forge, a type of bloomery furnace.
– The Ragged Chute plant in Ontario is a trompe and tourist attraction owned by TransAlta.
– The trompe is connected to the Sprengel vacuum pump, which uses mercury to create a vacuum.
– Trompes can be enormous, like the one at the Ragged Chute facility in Ontario.

– References:
– The Catalan process for direct malleable iron production and its spread to Europe and the Americas by Estanislau Tomàs.
– A. Russel Bond’s book “The Story of Mechanics” provides insights into trompe mechanics.
– IMechE’s publication “Hydropower Developments: New Projects, Rehabilitation, and Power Recovery” mentions trompes.
– Bruce R. Leavitt’s paper on “Aeration of Mine Water Using a TROMPE” discusses modern trompe applications.
– The Ragged Chutes are mentioned in various sources as a notable trompe installation.