Solar energy increases its popularity in many fields, from buildings, food productions to power plants and other industries, due to the clean and renewable properties. To eliminate its intermittence feature, thermal energy storage is vital for efficient and stable operation of solar energy utilization systems. It is an effective way of decoupling the energy …
Solar energy increases its popularity in many fields, from buildings, food productions to power plants and other industries, due to the clean and renewable properties. To eliminate its intermittence feature, thermal energy storage is vital for efficient and stable operation of solar energy utilization systems. It is an effective way of decoupling the energy …
This Research Topic specifically focuses on the design and optimization of fluid machinery and its associated systems, employing experimental and numerical calculation …
The energy of the system is stored in high-pressure air and can be released by directly generating electricity through a turbine or by pumping water, as shown in Fig. 23 (a) and (b), respectively. The function of pneumatic actuator ball valve (BV-01) is to induce water …
Rotating separation flow (RSF) in hydraulic machinery is characterized by the large flow separations and complex vortical structures induced by the effects of strong rotation, large curvature and multiple wall surfaces, and conducting efficient engineering computation and putting forward effective control strategy for the RSF are important topics in the inner flow …
This energy storage can be accomplished using molten salt thermal energy storage. Salt has a high temperature range and low viscosity, and there is existing experience in solar energy applications. Molten salt can be used in the NHES to store process heat from the nuclear plant, which can later be used when energy requirements increase.
CFD and experimental techniques and applications in fluid machinery and fluid devices; Unsteady and transient phenomena in fluid machinery and fluid devices; Pumps, fans, compressors, hydraulic turbines, pump turbines, valves, etc. We look forward to receiving your contribution to this Special Issue. Dr. Jin-Hyuk Kim Prof. Dr. Joon Ahn Dr. Sung ...
Improving the efficiency of fluid machinery is an eternal topic, and the development of computational fluid dynamics (CFD) technology provides an opportunity to achieve optimal design in limited time. A multi-objective design process based on CFD and an intelligent optimization method is proposed in this study to improve the energy transfer efficiency, using …
In order to overcome the aforementioned application challenges and improve energy efficiency, Delta has leveraged its years of experience in the field of motor drive and control to launch a high speed fluid machinery solution that uses maglev technology, including motor drives, bearing drives, high-speed motors, maglev bearings and power ...
The use of a liquid thermal energy storage medium tends to be the most advantageous of the low-temperature adiabatic compressed air energy storage systems. These liquid thermal energy storage medias support the application of heat exchangers, as well as compression and expansion devices.
Published nearly a decade ago, Fluid Machinery: Performance, Analysis, and Design quickly became popular with students, professors, and professionals because of its comprehensive and comprehensible introduction to the fluid mechanics of turbomachinery. Renamed to reflect its wider scope and reorganized content, this second edition provides a …
Li et al. [7] reviewed the PCMs and sorption materials for sub-zero thermal energy storage applications from −114 °C to 0 °C. The authors categorized the PCMs into eutectic water-salt solutions and non-eutectic water-salt solutions, discussed the selection criteria of PCMs, analyzed their advantages, disadvantages, and solutions to phase separation, …
The cost of an energy storage system is often application-dependent. Carnegie et al. [94] identify applications that energy storage devices serve and compare costs of storage devices for the applications. In addition, costs of an energy storage system for a given application vary notably based on location, construction method and size, and the ...
A fluid machine is a device which converts the energy stored by a fluid into mechanical energy or vice versa . The energy stored by a fluid mass appears in the form of potential, kinetic and intermolecular energy. The mechanical energy, on the other hand, is usually transmitted by a …
The ongoing digitalization of the energy sector, which will make a large amount of data available, should not be viewed as a passive ICT application for energy technology or a threat to thermodynamics and fluid dynamics, in the light of the competition triggered by data mining and machine learning techniques. These new technologies must be posed on solid bases for the …
This article mainly reviews the energy storage technology used in hydraulic wind power and summarizes the energy transmission and reuse principles of hydraulic …
The chapter summarizes the research activities and main outcomes of the fluid machinery, energy systems and power generation groups, occurred during the 2013–2023 …
Fluid machinery has wide applications, such as municipal water conservancy. It can also be used in the petrochemical industry, agriculture, electric power, national defense, and other fields [].Fluid machinery provides power supply for the rapid development of China''s economy and science and technology [].However, its wide range of …
As the renewable energy culture grows, so does the demand for renewable energy production. The peak in demand is mainly due to the rise in fossil fuel prices and the harmful impact of fossil fuels on the environment. Among all renewable energy sources, solar energy is one of the cleanest, most abundant, and highest potential renewable energy …
7.1.1 Theoretical Considerations 7.1.1.1 Head Rise of the Pump. As shown in Fig. 7.2, section 1-1 is the inlet of the pump with vacuum gauge 3, and section 2-2 is the outlet of the pump with pressure gauge 4.The energy difference of per unit weight fluid between outlet and inlet ( e_{2} - e_{1} ), or the energy head added to the flow, is called head rise of the pump, …
Dear Colleagues, Fluid machinery has been widely used in agriculture, hydroelectric power plants, and chemical industry, among other applications, for various transport processes of different kinds of fluids.
EVAPCO Ice Storage Application and Design Guide 3 1. Introduction: A. History of Thermal Energy Storage Thermal Energy Storage (TES) is the term used to refer to energy storage that is based on a change in temperature. TES can be hot water or cold water storage where conventional energies, such as natural
In today''s world, the energy requirement has full attention in the development of any country for which it requires an effective and sustainable potential to meet the country''s needs. Thermal energy storage has a complete advantage to satisfy the future requirement of energy. Heat exchangers exchange heat in the thermal storage which is stored and retrieved …
Numerous solutions for energy conservation become more practical as the availability of conventional fuel resources like coal, oil, and natural gas continues to decline, and their prices continue to rise [4].As climate change rises to prominence as a worldwide issue, it is imperative that we find ways to harness energy that is not only cleaner and cheaper to use but …
The Thermal Fluid and Energy Systems (TFES) research division addresses a wide array of cutting-edge topics that rely on thermodynamics, heat transport, fluid mechanics, and chemical and phase change phenomena in engineered systems. Students, faculty, and research staff implement advanced experimental diagnostics and numerical simulation tools to solve …
Latent and thermochemical energy storage are mainly proposed for thermodynamic cycles with a pure working fluid phase transition (i.e., evaporation and …
In this case, the fluid is released from its high-pressure storage and into a rotational energy extraction machine (an air turbine) that would convert the kinetic energy of the fluid into rotational mechanical energy in a wheel that is engaged with an electrical generator and then back into the grid, as shown in Fig. 7.1b.
Cross-disciplinary approaches that integrate fluid dynamics, mechanical engineering, and materials science to address challenges in marine fluid machinery design and operation. By collecting and disseminating the latest research in these areas, we aim to foster a vibrant community of scholars and practitioners dedicated to pushing the ...
Keywords: fluid machinery and system, design and optimization, efficiency improvement, unsteady flow, computational fluid dynamics. Citation: Ji L, Agarwal RK, Kan K, Tao R, Yang Y and Presas A (2023) Editorial: Optimal design and efficiency improvement of fluid machinery and systems. Front. Energy Res. 11:1238721. doi: 10.3389/fenrg.2023.1238721
Liquid air energy storage (LAES): A review on technology state-of-the-art, integration pathways and future perspectives ... LAES discharge, so two-tanks liquid TES should be chosen for hot recycle, with temperature levels driving suitable storage media and fluid selection. Considerations on costs and a comparative techno-economic assessment of ...
Secondly, analysis is given to the practical applications of gravity energy storage in real scenarios such as mountains, wind farms, oceans, energy depots and abandoned mines. In the end, the future ... Energy Vault, and LEM-GES (Linear Electric Machine Gravity Energy Storage). 2.1. Wet gravity energy storage
Due to the fluctuating renewable energy sources represented by wind power, it is essential that new type power systems are equipped with sufficient energy storage devices to ensure the stability of high proportion of renewable energy systems [7].As a green, low-carbon, widely used, and abundant source of secondary energy, hydrogen energy, with its high …
The 40,000 ton-hour low-temperature-fluid TES tank at . Princeton University provides both building space cooling and . turbine inlet cooling for a 15 MW CHP system. 1. Photo courtesy of CB&I Storage Tank Solutions LLC. Thermal Energy Storage Overview. Thermal energy storage (TES) technologies heat or cool
The design of fluid machinery is a complex task that requires careful consideration of various factors that are interdependent. The correlation between performance parameters and geometric parameters is highly intricate and sensitive, displaying strong nonlinear characteristics. Machine learning techniques have proven to be effective in assisting with …
2. Solar energy is a time dependent and intermittent energy resource. In general energy needs or demands for a very wide variety of applications are also time dependent, but in an entirely different manner from the solar energy supply. There is thus a marked need for the storage of energy or another product of the solar process, if the solar energy is to meet the …
Energy production, efficiency, storage, and transportation have been topics of interest since the steam age, since they correspond to the power of nations. At present, with …
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