On the measurement of ram-pump power by changing in water hammer pressure wave energy

Fatahi-Alkouhi, Reza; Lashkar-Ara, Babak; Keramat, Alireza

doi:10.1016/j.asej.2019.05.001

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…WATT4ES uses the compressibility of the air inside the vessel storage, increasing the pressure by transient flow conditions. Hydrams are particularly useful in remote areas with significant differential levels of topography, and they can be created in an offshore, nearshore, or onshore solution where water can be pumped without consuming electricity to the higher points far from the water source [10,11]. The hydram pump is placed downstream of a water source and connected by a drive pipe.…”

Section: Water-air Transient Technology For Energy Storage (Watt4es)mentioning

confidence: 99%

“…Solar energy generation capacity has been increasing significantly in the past decade with a contribution of almost 2.4% to the global electricity supply in 2018, which is predicted to increase to 22% in 2025, with potentially up to 70% in 2050 [11][12][13]. However, development of large utility-scale PV system installations is limited due to (i) the cost and availability of favorable land areas, (ii) the decrease in efficiency at high operating PV cell temperature, and (iii) potential environmental impacts, including for biodiversity.…”

Section: Solar Pvmentioning

confidence: 99%

“…So, the aim of this research is focused on FPV, which presents several advantages: (i) reduction in land use, which may be otherwise designated for agricultural use; (ii) achieving a natural cooling potential of the water body may enhance PV performance, due to a higher level of wind speeds offshore, with the water surface as a regular cooling system; (iii) a lower amount of obstacles causing shading loss; (iv) a lower amount of dust compared with land-based PV (LBPV) systems; (v) more than 50% of the entire world population lives near an oceanic coast, where energy is needed, and thus an FPV system installed in the sea can be conveniently located to supply energy to these regions and harbors; and (vi) the extracted energy from FPV systems could be a great supply for offshore platforms and ships, contributing to the global greenhouse gas reduction, and can, at same time, be used for hydrogen production and desalination, when necessary. An optimal FPV is supposed to be used as a modular solution, in a flexible way, with robustness, safety, an optimum supportive structure size, and simplicity of installation, and is an economically viable solution [11][12][13].…”

Section: Solar Pvmentioning

confidence: 99%

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New Integrated Energy Solution Idealization: Hybrid for Renewable Energy Network (Hy4REN)

Ramos

Vargas²,

Saldanha

2022

Energies

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A review of different energy components is detailed, as a baseline of fundamentals for the new integrated energy concept idealization. This innovative solution is a Hybrid for Renewable Energy Network (Hy4REN) based on well-studied elements to produce the best final solution. This proposal has the objective of improving energy system sustainability, facing fossil fuel and climate change restrictions, and increasing energy network flexibility. The most mature energy storage technology, pumped hydropower energy storage (PHES), is used to support both the grid connection and stand-alone modes, as an integrated hybrid energy system. The hybrid system idealization is modular and scalable, with a complementary nature among several renewables, using sea water in offshore mode to build an integrated solution. By evaluating a variety of energy sources, complemented with economic analysis, the benefits associated are evidenced using this sustainable methodology based only on renewable sources. Combined production of hydropower, using sea water, with pumped storage and water hammer events to create potential energy to supply hydropower in a water loop cycle, without consuming electrical energy, is explored. Other renewable sources are also integrated, such as floating solar PV energy and an oscillating water column (OWC) with coupled air-venting Wells and wind turbines, all integrated into the Hy4REN device. This complementarity of available sources allows us to improve energy storage flexibility and addresses the energy transition toward net-zero carbon emissions, inducing significant improvements in the sustainability of the energy network as a whole.

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Section: Water-air Transient Technology For Energy Storage (Watt4es)mentioning

confidence: 99%

Section: Solar Pvmentioning

confidence: 99%

Section: Solar Pvmentioning

confidence: 99%

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New Integrated Energy Solution Idealization: Hybrid for Renewable Energy Network (Hy4REN)

Ramos

Vargas²,

Saldanha

2022

Energies

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“…In addition to the above, this millennium also witnessed ram research pertaining to numerical and computational work by Carvalho et al, 17 Filipan et al 18 and Shende et al 19 who used CFD to improve the exit valve efficiency of the ram. Later experimental study on small scale was carried out by Sobieski et al 20 who used an oscilloscope to determine wave forms of pressure and velocity, while Alhouhi et al 21 optimized the drive pipe length to diameter ratio within the case study. Maw et al 22 conceived a ram for 15 m delivery head for a very small quantity of delivery flow (0.02 l/ s) along with CFD analysis for an application in Burma.…”

Section: Context Of Hydraulic Ramsmentioning

confidence: 99%

Classical hydraulic ram pump performance in comparison with modern hydro-turbine pumps for low drive heads

Kesharwani

Tripura

Singh

2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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We present a unique comparison of two types of renewable hydro pumping devices, namely the ram and turbine pump having different working principles. This comparison is based on experiments with these pumping devices at a field station in a village in central-east India. Our work identifies the major gaps in the study of large ram pumps, covering the hydraulic scaling conformance to creation of a unified platform for the investigation of such pumping devices with respect to operating parameters like head, flow, efficiency and, most importantly, size. The field tests of ram revealed that its non-dimensional performance parameters fit perfectly on the theoretical scaling curves. The investigations further showed that while rams had more efficiency (53–62%), they could not handle more than 40–50 l/s of discharge. In comparison, the turbine pumps, tested in laboratory conditions, were more compact for flows beyond 100 l/s, but they settled for overall efficiencies between 49% and 55%. The study recommends a limiting design flow line for rams to be 50 l/s because of the size-factor. It further finds that for absolute flows between 50 and 100 l/s within the low-head range of 3–5 meters, the design of geometrical shapes for turbine pumps could be a challenge for optimized efficiencies. The head-discharge-diameter (H-Q-D) chart developed here is a useful way of interpreting the technology with respect to boundary conditions and it creates a roadmap for future inventions in such renewable hydro-pumping devices. The paper makes a case for axial flow pumps as turbines. It concludes with a call for the propagation of research on such nature-friendly pumping technologies, where most (90–95%) of the water is returned to the stream, paving the way for a new era of sustainability.

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“…The operating frequency is generally 30-60 cycles per minute, and may reach as high as 90 cycles per minute (i.e., the waste valve generally opens and closes 40,000-80,000 times per day, and sometimes up to 120,000 times per day). [5][6][7] The pump would run inefficiently or even fail if the waste valve is poorly designed.…”

Section: Introductionmentioning

confidence: 99%

Structural design and parameter optimization on a waste valve for hydraulic ram pumps

Yang

Guo

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

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Hydraulic ram pump is an automatic water-lifting machinery, which converts the low-head potential energy of a large volume of water into a small high-head potential energy through the periodic open and close of waste valve and delivery valve. The pump would run inefficiently or even fail if the valves are poorly designed. In this paper, a novel and reliable waste valve of lift-check-valve structure has been developed. The sealing mode integrating soft and rigid sealing rings, the equation for the valve disc thickness and the equation for the flow passage in terms of the diffuser length, the larger radius and the smaller radius, are presented to guide future design. Major factors influencing the hydraulic performance, including the flow passage, valve opening and valve clack mass, are discussed with model experiments and numerical simulations. The optimized configuration for a 100-mm hydraulic ram pump includes a curved diffuser, 25–30-mm valve opening and 1.2-kg valve clack mass. The proposed waste valve can decrease the head loss coefficient of the system by 45%, achieve relatively higher working efficiency, and lift the largest water when the delivery head is lower than 30 m.

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On the measurement of ram-pump power by changing in water hammer pressure wave energy

Cited by 12 publications

References 11 publications

New Integrated Energy Solution Idealization: Hybrid for Renewable Energy Network (Hy4REN)

New Integrated Energy Solution Idealization: Hybrid for Renewable Energy Network (Hy4REN)

Classical hydraulic ram pump performance in comparison with modern hydro-turbine pumps for low drive heads

Structural design and parameter optimization on a waste valve for hydraulic ram pumps

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