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Strategies to improve the energy efficiency of hydraulic power unit with flywheel energy storage …

An energy-saving hydraulic drive unit based on flywheel energy storage system is presented. • The storage capacity and operational stability of traditional flywheel energy storage system is improved. • Motor slip rate …

Molten salt for advanced energy applications: A review

The cold storage tank was made from carbon steel, and the hot storage tank was made from stainless steel. Each tank was large enough to hold the entire plant''s inventory of salt. Fig. 7 shows a picture of the Solar Two plant''s thermal energy storage tanks ( Bradshaw et al., 2002 ).

Experimental study of hydraulic ram effects on a liquid storage tank…

Although the peak pressure at impact is high, the pressure field weakens rapidly because of the geometric expansion of the shock wave. An experimental example of this pressure attenuation is provided by Holm [3] and is shown in Fig. 2.Stepka et al. [1] has studied impacts on tanks which were 61 cm 2 by 30.5 cm or a cube 30.5 cm on as side.

Energies | Free Full-Text | Regenerative Braking Control Strategy of Electric-Hydraulic …

A novel electric-hydraulic hybrid drivetrain incorporating a set of hydraulic systems is proposed for application in a pure electric vehicle. Models of the electric and hydraulic components are constructed. Two control strategies, which are based on two separate rules, are developed; the maximum energy recovery rate strategy adheres to …

5.5: Pumped Storage Hydroelectric Plants (PSHP)

Figure 5.5.1 5.5. 1: A general scheme of the Raccoon Mountain Pumped Storage Hydroelectric Plant. It uses dual-action Francis turbines. Details of the turbines and the motors/generators are not shown in the figure, we have to understand that they are all hidden in the unit marked as the "Powerplant Chamber" (source: Wikimedia Commons).

Simulation Analysis of a Novel Digital Pump with Direct Recycling of Hydraulic Energy

hydraulic hybrid drivetrain and performed simulation tests using MATLAB/Simscape, and the total efficiency was improved by at least 8% to 25% [22]. Minav et al. studied electro-hydraulic reprocessing methods for recycling potential energy from a fork truck.

Layout analysis of compressed air and hydraulic energy storage …

Different from the hydraulic hybrid vehicle, the compressed air vehicle is a new type of green vehicle with the advantages of high energy density and low cost. 20 The pressure energy of high-pressure air in the air storage unit is converted into mechanical energy to drive the vehicle by a pneumatic compressor/motor. 21 This technology was …

Research on new vibratory energy-recycling hydraulic damping …

A vibratory energy-recycling hydraulic damping system is introduced …

Hydrate-Based Hydrogen Storage and Transportation System: …

To achieve THF promoter recycling, the THF solution will be trucked …

(PDF) Water management in hydraulic fracturing technology

Hydraulic fracturing is a. kind of hydraulic pressure drilling technology widely used in s hale gas exploitation, which has a large. demand for water [1]. In order to prevent shale layer damage ...

Modeling and control strategy analysis of a hydraulic energy-storage wave energy conversion system …

In this paper, a hydraulic energy-storage wave energy conversion system is constructed, and a mathematical model of main components is built for analysis. Control strategies of generator-side and grid-side are defined for the system, where a Vienna rectifier is applied to converter of generator-side.

Research on energy saving system of hydraulic excavator based …

Currently, the mainstream hydraulic energy recovery methods for excavators mainly include the electric energy regeneration system (EERS) and the hydraulic energy regeneration system (HERS). EERS is a system that transforms the recoverable energy of excavators into electrical energy using a hydraulic motor …

(PDF) Hydraulic turbocharger for energy recycling in the reverse osmosis seawater desalination system …

Ji Yunguang, Li Xiaoxia, Michael Oklejas, et al. 2018 Application of Energy Recovery Technology by Hydraulic Turbochargers [J] Energy and Energy Conservation 06 77-78+154

Hybrid Pumped Hydro Storage Energy Solutions towards Wind …

This study presents a technique based on a multi-criteria evaluation, for …

Review and prospect on key technologies of hydroelectric-hydrogen energy storage-fuel cell multi-main energy …

Hydropower engineering is one of the most developed renewable energy generation techniques, which is characterized by high development concentration, large dispatching scale, many power stations, and long transmission distance. However, the …

Sustainability | Free Full-Text | A Comprehensive …

Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power …

(PDF) Open Accumulator Concept for Compact Fluid Power Energy Storage …

OPEN ACCUMULA TOR CONCEPT FOR COMP ACT FLUID PO WER ENERGY. STORA GE. Perry Y Li., James D. V an de Ven and Caleb Sancken. Center for Compact and Efficient Fluid P ower. Department of Mechanical ...

CHAPTER 6: Hydraulic reservoirs | Power & Motion

A receiver tank, Figure 6-1, stores energy for future use similar to a hydraulic accumulator. This is possible because air is a gas and thus is compressible. A receiver tank is a pressure vessel and is constructed to pressure vessel standards. At the end of the work cycle the air is simply returned to the atmosphere. Figure 6-1.

Energy Efficiency and Dynamic Analysis of a Novel Hydraulic System with Double Actuator

At present, increased attention has been given to energy efficiency promotion and energy saving of manufacturing equipment and systems. Hydraulic system is widely used in engineering machinery industries; however, the high energy consumption and low energy efficiency of which limit its development and application. On the basis of …

Photovoltaic power plants with hydraulic storage: Life-cycle …

Abstract. The present work sets out to evaluate the environmental profile …

Pumped-storage hydropower and hydrogen storage for meeting …

Wind turbines supply wind energy, while an additional amount of energy …

A review of pumped hydro energy storage

The key motivations for this review are firstly that large amounts of …

Constant pressure hydraulic energy storage through a variable area piston hydraulic …

Then, a hydraulic excavator energy saving system based on three …

A New Approach to Pumped Storage Hydropower

Pumped-storage hydropower (PSH) is a type of hydroelectric energy storage. It is a configuration of two water reservoirs at different elevations that can generate power (discharge) as water moves down through a turbine; this draws power as it pumps water (recharge) to the upper reservoir. PSH capabilities can be characterized as open loop ...

PAPER OPEN ACCESS Hydraulic turbocharger for energy recycling in the reverse osmosis seawater desalination system …

School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China. 1Email: Jiyg@hebust .cn. Abstract. In order to reduce the energy consumption of ...

Design, system modeling and energy management for a novel …

Compared to conventional pumping units with low efficiencies and …

Hybrid Pumped Hydro Storage Energy Solutions …

This study presents a technique based on a multi-criteria evaluation, for a sustainable technical solution based on renewable sources integration. It explores the combined production of hydro, solar and wind, …

Handling Produced Water From Hydraulic Fracturing

The average total cost for handling water ranged from USD 2/bbl to USD16.80/bbl. According to the report, transportation costs represent from 56% to 84% of the total water-handling costs, thus …

Energy and resources recovery from wastewater treatment …

Leeuwen et al. (2018) presented the application of energy and raw materials factory (ERMF) to recover resources like cellulose, bioplastics, phosphate, alginate-like exopolymers from aerobic granular sludge and biomass from wastewater plants in Netherlands. More than 100 biogas recovery plants, 12 phosphate installations and 2 …

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