Arie Herlambang, Heru Dwi Wahyono


Environmental contamination and global climate change cause degradation of fresh
water in the whole world. Increasing of oil price also insist the water treatment operational
cost rise, especially for pumping and water lifting from the low land areas to up land. One
of alternatif solution to reduce operational cost is using Hydraulic ram pumps (hydram
pump). Hydram pump are water-lifting devices that are powered by filling water. Such
pumps work by using the energy of water falling a small height to lift a small part of that
amount of water to a much greater height. In this way, water from a spring or stream in a
valley can be pumped to a village or irrigation scheme on the hillside. The main and
unique advantage of hydram pumps is that with a continuous flow of water, a hydram
pump operates automatically and continuously with no other external energy source - be
it electricity or hydrocarbon fuel. It uses a renewable energy source (stream of water) mid
hence ensures low running cost. Minimum up lifting vertical power of pump is twice than
vertical distance of water down and maximum up lifting vertical power is twenty times
than vertical distance of water down. If there are air captured in distribution pipe, it will
need release valve. In this paper, different aspect of designing a hydraulic-rain pump
system is discussed. Application and limitation of hydram pump is presented. It imparts
absolutely no harm to the environment Hydraulic ram pumps are simple, reliable and
require minimal maintenance. All these advantages make hydram pumps suitable to rural
community water supply and mud backyard irrigation in developing countries.


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