page_title: Hydraulic ram
hierarchical_section_title: Hydraulic ram
caption_attribution_description: English: A "Blake's Hydram" en:Hydraulic ram at the en:Centre for Alternative Technology. Nikon 5700, by William M. Connolley, August 2005.
context_page_description: A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower. It takes in water at one "hydraulic head" and flow rate, and outputs water at a higher hydraulic head and lower flow rate. The device uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. The hydraulic ram is sometimes used in remote areas, where there is both a source of low-head hydropower and a need for pumping water to a destination higher in elevation than the source. In this situation, the ram is often useful, since it requires no outside source of power other than the kinetic energy of flowing water.
context_section_description: A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower.  It takes in water at one "hydraulic head" (pressure) and flow rate, and outputs water at a higher hydraulic head and lower flow rate. The device uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. The hydraulic ram is sometimes used in remote areas, where there is both a source of low-head hydropower and a need for pumping water to a destination higher in elevation than the source.  In this situation, the ram is often useful, since it requires no outside source of power other than the kinetic energy of flowing water.
caption: Figure 1: A hydraulic ram that drives a fountain at the Centre for Alternative Technology
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