Definition - What does Hydraulic Ram mean?
Hydraulic Ram is a cyclic water pump powered by kinetic energy of water. The water flows through a large valve which causes a pressure change used to raise water from a lower level to a higher level. The water hammer effect is used for the purpose of lifting water. In this process the higher flow rate decreases to a lower level, but the head is raised so as to deliver water to that higher elevation.
Petropedia explains Hydraulic Ram
The Hydraulic Ram is very useful in storing the water in storage tanks at high height as it only requires the water velocity or Kinetic energy of water to work. This stored water can be used in the oil and gas industry for water injection purposes or using water as a heat exchanger in the cooling towers. Hydraulic ram uses no other external form of energy except the kinetic energy of water. Another good thing about hydraulic ram is that it has only two moving parts that are two valves. This makes it cheap, reliable and very easy to maintain. Low maintenance is a big positive point for them. If we talk about the energy efficiency, then it may go up to 80%. Generally it is 60% in usual cases. A water-powered pump can be used alternatively to hydraulic ram. The only major disadvantage of hydraulic ram is that a lot of water is required for its functioning.