Energy efficiency

Energy efficiency

Industry: Energy

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Energy efficiency

Water turbine

Energy; Energy efficiency

A turbine that uses water pressure to rotate its blades; the primary types are the Pelton wheel, for high heads (pressure); the Francis turbine, for low to medium heads; and the Kaplan for a wide ...

Impulse turbine

Energy; Energy efficiency

A turbine that is driven by high velocity jets of water or steam from a nozzle directed to vanes or buckets attached to a wheel. (A pelton wheel is an impulse hydro turbine).

Propeller hydro turbine

Energy; Energy efficiency

A turbine that has a runner with attached blades similar to a propeller used to drive a ship. As water passes over the curved propeller blades, it causes rotation of the shaft.

Direct vent heater

Energy; Energy efficiency

A type of combustion heating system in which combustion air is drawn directly from outside and the products of combustion are vented directly outside. These features are beneficial in tight, ...

Vented heater

Energy; Energy efficiency

A type of combustion heating appliance in which the combustion gases are vented to the outside, either with a fan (forced) or by natural convection.

Cathedral ceiling/roof

Energy; Energy efficiency

A type of ceiling and roof assembly that has no attic.

Forced ventilation

Energy; Energy efficiency

A type of building ventilation system that uses fans or blowers to provide fresh air to rooms when the forces of air pressure and gravity are not enough to circulate air through a building.