Predicting the Output of a Hydraulic Ram Pump

Manohar, Krishpersad; Adeyanju, Anthony Ademola; Vialva, Kureem

doi:10.9734/cjast/2019/v38i630390

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…Specifically, the authors of [21,22] studied the effects of the waste valve on the performance of the hydram. Both experimental and numerical approaches were used to investigate this topic [25][26][27][28] for different specific purposes [29][30][31][32].…”

Section: Analysis Of the Literaturementioning

confidence: 99%

“…An experimental evaluation of the hydram and of the adjustable waste valve as well as a computational simulation of the adjustable waste valve with COMSOL were performed in [26] to study the effectiveness of hydram implementation and the effect of the stroke valve design towards the flow rate of the water being delivered, giving suggestions about the optimal stroke length of the adjustable waste valve. An empirical correlation was proposed in [27] to predict the delivery output of a hydram for any combination of input and output head height, whose accuracy was checked against the predicted theoretical output flow rate. Numerical simulations were conducted with ANSYS Fluent in [28] to develop a new design for a hydraulic pump, controlling the opening and closing of the valve.…”

Section: Analysis Of the Literaturementioning

confidence: 99%

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Experimental and Numerical CFD Modelling of the Hydrodynamic Effects Induced by a Ram Pump Waste Valve

Evangelista,

Tortora,

Viccione

2023

Sustainability

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The hydraulic ram pump or hydram is a machine capable of lifting water to a hydraulic head higher than the level of the supply source. It is a sustainable and self-sufficient device: the working principle is based on the rise of abrupt pressure variations occurring in the feeding pipeline when the liquid inside it undergoes a locally sharp change in velocity as a consequence of the sudden closure of the waste valve. Invented in 1772, the pump has been improved over the decades. Due to its simplicity, low cost and reliability, it has been widely used worldwide to provide adequate domestic water supplies, especially before the spreading of electricity and internal combustion engines. In recent years, the new attention placed on sustainability and energy transition from fossil fuels to renewable energy devices has brought a growing interest to this basic machine, essentially forgotten and abandoned in the last century; it seems promising especially in developing countries. The hydram is, in fact, a very simple machine, with only two moving parts, the waste and delivery valves. The efficiency of the hydraulic ram pump is mainly influenced by the characteristics of the waste valve. However, sufficient data are not available for the design of the hydram and the waste valve. In this work, the behaviour of the waste valve of a hydram was simulated by means of Computational Fluid Dynamics (CFD). Velocity and pressure values were analysed for different scenarios with different closing times of the valve. The data obtained from the developed numerical model were compared, in order to verify the validity of the simulations, with those collected during the operation of the hydram placed at the Laboratory of Environmental and Marine Hydraulics (LIDAM) of the University of Salerno, Italy. The numerical model thus obtained can, therefore, be used to identify the ideal configuration of the valve in order to ensure the best performance of the hydram.

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Section: Analysis Of the Literaturementioning

confidence: 99%

Section: Analysis Of the Literaturementioning

confidence: 99%

Experimental and Numerical CFD Modelling of the Hydrodynamic Effects Induced by a Ram Pump Waste Valve

Evangelista,

Tortora,

Viccione

2023

Sustainability

View full text Add to dashboard Cite

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“…Nigeria's coal, concentrated in Kogi and Enugu states, is mainly lignite and subbituminous types with small quantity of high volatile bituminous coal46 . Hydro power potential has been estimated at 12,220 MW47 . The technical potentials of other renewable energy sources are appreciable: Small hydro (735 MW), Solar Installed and available power generation capacity in Nigeria Emissions scenarios for Nigeria's nationally determined contributions to the Paris Agreement Please do not adjust margins Please do not adjust margins CSP (36,683 MW), Solar PV (492,471 MW), Biomass (7,291 MW), and Wind (44,024 MW)…”

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confidence: 99%