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Letteratura scientifica selezionata sul tema "Energy accumulation system"

Autore: Grafiati

Pubblicato: 30 maggio 2022

Ultima modifica: 31 maggio 2022

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Articoli di riviste sul tema "Energy accumulation system"

Narita, Katsuhiko. "Energy Accumulation System by Heat Pumps". Journal of the Society of Mechanical Engineers 95, n. 878 (1992): 56–61. http://dx.doi.org/10.1299/jsmemag.95.878_56.

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Belik, Milan. "Optimisation of Energy Accumulation for Renewable Energy Sources". Renewable Energy and Power Quality Journal 19 (settembre 2021): 205–10. http://dx.doi.org/10.24084/repqj19.258.

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This project focuses on optimisation of energy accumulation for various types of distributed renewable energy sources. The main goal is to prepare charging – discharging strategy depending on actual power consumption and prediction of consumption and production of utilised renewable energy sources for future period. The simulation is based on real long term data measured on photovoltaic system, wind power station and meteo station between 2004 – 2021. The data from meteo station serve as the input for the simulation and prediction of the future production while the data from PV system and wind turbine are used either as actual production or as a verification of the predicted values. Various parameters are used for trimming of the optimisation process. Influence of the charging strategy, discharging strategy, values and shape of the demand from the grid and prices is described on typical examples of the simulations. The main goal is to prepare and verify the system in real conditions with real load chart and real consumption defined by the model building with integrated renewable energy sources. The system can be later used in general installations on commercial or residential buildings.

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Durcansky, Peter, David Hecko e Milan Malcho. "PRIMARY ENERGY ACCUMULATION THROUGH ADVANCED GAS HYDRATES SYSTEM". International Journal of Research -GRANTHAALAYAH 7, n. 5 (31 maggio 2019): 278–83. http://dx.doi.org/10.29121/granthaalayah.v7.i5.2019.846.

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Accumulation of primary energy of natural gas is a perspective industrial area mainly for countries dependent on the import of energy and raw materials. Transporting and storage of natural gas is economically and technologically demanding, which is always reflected in the resulting price. Natural gas hydrates allow transport and storage at low pressures and relatively favorable temperatures. Another no less important area is the storage of energy in biogas plants where gas formation is time-dependent. Biogas hydrates would allow short-term storage at room temperature and atmospheric pressure. This article deals with the design of a functional prototype for the production of hydrates and numerical simulation.

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Dostál, Zdeněk, e Michaela Solanská. "Calculation of accumulation unit for renewable energy source system". Journal of Energy Storage 14 (dicembre 2017): 410–15. http://dx.doi.org/10.1016/j.est.2017.05.016.

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Chоvniuk, Yuriy, Petro Cherednichenko, Anna Moskvitina e Maria Shyshyna. "CALCULATION OF CONSTRUCTION ELEMENTS OF HEAT ACCUMULATORS WITH LIQUID AND SOLID HEAT-ACCUMULATING MATERIAL". Urban development and spatial planning, n. 77 (24 maggio 2021): 475–86. http://dx.doi.org/10.32347/2076-815x.2021.77.475-486.

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The depletion of traditional fuel resources and the deterioration of the ecology of the environment, an increase in emissions into the air make the research on renewable energy and the need to attract clean energy sources to the energy balance of Ukraine. A promising direction is the use of solar energy for municipal heat supply, which can provide large heat needs even in temperate climates. Basically, the methods of using thermal energy from the sun are generally economically effective, but the share of using thermal solar energy is quite small. It can also be solved by accumulating these surpluses and using them during the heating season. The experience of operating unorganized seasonal heat accumulators in the soil indicates the low efficiency of such heat storage due to significant heat losses into the surrounding soil mass. For such systems (solar collectors + seasonal heat accumulator), it is advisable to use organized seasonal heat accumulators, which are designed for a certain amount of heat. An organized seasonal heat accumulator is understood as a heat storage system, which consists of a heat insulated tank for storing heat storage material and a heat carrier, which is used to transport heat to the heat storage material during its accumulation during the warm period and heat supply in the cold season from the heat storage material to energy consuming systems (heating system, hot water supply, etc.). The design of a heat accumulator with solid and liquid heat accumulating material is considered, in which a more uniform distribution of temperatures in the volume of the heat accumulator is achieved. A method for calculating structural elements for a heat accumulator with liquid and solid heat accumulating material has been developed, taking into account the heat loss of the heat accumulator and the characteristics of the soils at the construction site.

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Demchenko, Vladimir, Alina Konyk e Vladimir Falko. "Mobile Thermal Energy Storage". NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, n. 3 (30 dicembre 2021): 44–50. http://dx.doi.org/10.20998/2078-774x.2021.03.06.

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The article is devoted to topical issues related to the storage, accumulation and transportation of heat by stationary and mobile heat storage. Analysis of the current state of the district heating system indicates significant heat losses at all stages of providing the consumer with heat. The use of heat storage in heat supply systems leads to balancing the heat supply system, namely, the peak load is reduced; heat production schedules are optimized by accumulating excess energy and using it during emergency outages; heat losses caused by uneven operation of thermal equipment during heat generation are reduced; the need for primary energy and fuel consumption is reduced, as well as the amount of harmful emissions into the environment. The main focus is on mobile thermal batteries (M-TES). The use of M-TES makes it possible to build a completely new discrete heat supply system without the traditional pipeline transport of the heat carrier. The defining parameters affecting the efficiency of the M-TES are the reliability and convenience of the design, the efficiency and volume of the “working fluid”, the operating temperature of the MTA recharging and the distance of transportation from the heat source to the consumer. The article contains examples of the implementation of mobile heat accumulators in the world and in Ukraine, their technical and technological characteristics, scope and degree of efficiency. The technical indicators of the implemented project for the creation of a mobile heat accumulator located in a 20-foot container and intended for transportation by any available means of transport are given.

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Sopov, Anatoliy I., e Aleksandr Vinogradov. "Ground Heat Accumulator for Backup Heat Supply of Energy Facilities". Elektrotekhnologii i elektrooborudovanie v APK 1, n. 42 (gennaio 2021): 50–54. http://dx.doi.org/10.22314/2658-4859-2021-68-1-50-54.

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Many power grid facilities require heating in winter. For their heating, they usually install a system of electric heaters, connect mini gas boilers or use the thermal emissions of working electrical installations, since these objects are often located away from the sources of central heating. This leads to additional costs for the organization's own needs. It is proposed to accumulate the excess heat generated by using a ground heat accumulator, which will allow you to accumulate heat in warm periods of the year and when there is an excess of thermal energy in the system, and then use the thermal energy of the accumulator to heat the object. (Research purpose) The research purpose is in developing a ground heat accumulator capable of accumulating excess heat energy generated during the operation of high-power transformers and, if necessary, to transfer the accumulated heat to the heat supply system of energy facilities. (Materials and methods) The article considers the advantages of introducing heat storage in the heat supply systems of various facilities. Authors conducted a literary analysis of various methods of heat accumulation. (Results and discussion) The article presents the justification for the choice of a ground heat accumulator. Authors have completed the description of the proposed battery and the technology of its creation. The article describes the method of calculation of the main elements of the selected type of heat accumulator and the quantitative characteristics of the accumulator on the example of real objects. The article describes the operation of the battery in interaction with a heat pump and a horizontal ground heat exchanger. (Conclusions) The use of a heat accumulator as a backup source for energy facilities allows organizations to reduce the cost of heating premises and equipment. Additional functions that the ground heat accumulator is capable of performing are identified.

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Shairi, Nur Amira Shahieda, Ruzlaini Ghoni e Kharudin Ali. "SOLAR PANEL DUST MONITORING SYSTEM". Engineering Heritage Journal 4, n. 2 (30 ottobre 2020): 44–45. http://dx.doi.org/10.26480/gwk.02.2020.44.45.

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Solar energy has been one of the most explored sources of renewable due to its economical source of energy. However, the main barrier for solar energy generation is the present of dust particles on the panel surface that decreases its performance. Hence, persistent monitoring on dust accumulation is of importance to guarantee the optimum power is achieved. Thus, this research aims to develop the real-time dust monitoring system of the solar panel. A dust sensor with IoT will be developed for this purpose. The reading of dust accumulation will be recorded and is accessible online through smartphones or desktop.

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Mukhammadiev, M. M., B. U. Urishev, A. Abduaziz uulu, S. K. Gadaev e S. U. Zhankabylov. "Issues of using local energy systems with hydraulic energy storage in the power system of the republic of Uzbekistan". E3S Web of Conferences 216 (2020): 01138. http://dx.doi.org/10.1051/e3sconf/202021601138.

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The method of determining the main energy parameters of a local energy system based on renewable sources with hydraulic accumulation of part of the generated energy is considered. The example shows the economic efficiency of hydraulic energy storage in comparison with lithium-ion batteries.

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Valtera, Jan, e Jaroslav Beran. "Magnetic-mechanical accumulator of kinetic energy". Autex Research Journal 14, n. 1 (14 marzo 2014): 1–6. http://dx.doi.org/10.2478/v10304-012-0038-0.

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Abstract The paper focuses on the process of non-contacting kinetic energy accumulation at the dead-end positions of a reciprocating rectilinear motion with a variable stroke. It describes the development of a magnetic-mechanical accumulator that absorbs energy while the moving part is decelerating towards the dead-end position and releases the energy back to the system while it is accelerating from the dead-end position. At the same time, it enables stroke modification of a certain level with a minimal impact on the maximum force of the accumulator. With respect to the magneto-static analysis of components, the preload of the mechanical element has been set accordingly. The dynamic analysis of the system has been carried out and the prototype produced and tested on the testing rig.

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Più fonti

Tesi sul tema "Energy accumulation system"

Murgaš, Martin. "Návrh fotovoltaického systému rodinného domu s akumulací elektrické energie". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318759.

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The master thesis will concern design of hybrid photovoltaic system for a family house with accumulation of electric energy. Three alternatives of power consumption will be made. For each alternative multiple simulations will be carried out with different amount of photovoltaic panels and batteries. The most appropriate alternative and size of photovoltaic system will be chosen based on those simulations. Finally the choice of alternative will be described.

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Vrzal, Martin. "Optimalizace návrhu velikosti PV systémů". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254209.

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The master thesis deals with proposal of size optimization of PV systems. According to results of optimization, alternative solutions of photovoltaic system were proposed for family house. From the perspective of costs efficiency were compared investment costs and savings of implementation of electricity supply directly to private consumption. Particularly for each of the proposed solution, profitability assessment of comparing purchasing costs and returns on investment was performed. Theoretical part of the master thesis consists of introduction into solar radiation principles, structure and functionality of photovoltaic systems, electronics inverters and accumulation of electric energy. The practical part is focused on measuring of electricity consumption in particular family house, calculation of sunlight intensity hitting tested house, making various solutions of photovoltaic power plants placed on the family house in order to evaluate returns on investments. In conclusion are summarized all results of investigated solutions according to economics aspects.

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Hägvall, Kristoffer, e Martin Järn. "Grön uppvärmning av gröna hus : Hållbara uppvärmningsalternativ för växthusföretaget Svegro". Thesis, KTH, Byggteknik och design, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149279.

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I takt med stigande oljepriser har ett av Sveriges största odlingsföretag Svegro bestämt sig för att byta ut sitt nuvarande värmesystem. Svegro består idag av växthus på ca 50 000 m2 på Thorslunda gård, Färingsö. Uppvärmningen sker idag med hjälp av oljeeldning samt den värmeenergi som omvandlas från växthuslampor. Det nya värmesystemet kommer att använda sig av ett annat förbränningsalternativ än mineralolja. Detta kommer göra det möjligt för Svegro att sänka sina energikostnader och minska miljöpåverkan genom reducerat koldioxidutsläpp. Kraven som ställs är att det nya värmesystemet ska kunna integreras med det befintliga värmesystemet och samtidigt leva upp till dagens ekologiska krav. Målet med bytet av värmesystem är att sänka energiförsörjningskostnaderna men också att klara av framtida högre ställda krav och miljömålsättningar. För att avgränsa rapporten har tre olika förbränningsalternativ behandlats där alla passar bra med den nuvarande vattenburna värmelösningen. Alternativen består av bioolja, pellets och flis. För att bestämma det bästa alternativet har en jämförelsestudie mellan de olika bränslena gjorts där faktorer som investeringskostnader, miljöpåverkan och bränsleeffektivitet beaktats. Utifrån analyserna av resultaten i rapporten föreslås pellets som det bäst lämpade systemet för Svegros anläggning. Enligt livskostnadsanalysen i rapporten kommer det nya systemet att ha betalat av sig efter 1,5 år och efter det kommer besparingar på ca 5,5 miljoner kr göras per år jämfört med om det befintliga systemet skulle bevaras. Det nya bränslet kommer utöver ekonomiska besparingar även minska CO2-utsläppen med ca 2300 ton per år. Konsekvenserna av att välja pellets som förbränningsalternativ är att man måste kombinera pelletsförbränningen med en biooljeuppvärmning, detta för att växterna ska klara av att överleva extremt kalla vinterdagarna.
While the oil price continues to increase, one of Sweden’s largest indoor growing companies Svegro has decided to replace their existing heating system. Svegro is a large green house with an area of approximately 50 000 m2 and is located at Thorslunda gård, Färingsö.The heating system today uses mineral oil and the heat from assimilation lamps. The new system will be using an alternative combustion fuel to the expensive mineral oil. This will make it possible for Svegro to lower their energy costs and reduce their environmental effect by lowering the emissions of carbon oxide.The requirements are that the new heating system should be able to be integrated with the already existing system and at the same time live up to today´s ecological requirements. The goal of replacing the heating system is to reduce the energy costs but also to manage future demands and environmental ambitions. In order to define some limitations for the reports we have chosen three different combustion options where all alternatives fit with the present heating distribution. The combustion options are biological oil, wood pellets and wood chips. To determine the best option a comparison between the different fuels has been done considering factors such as investment costs, environmental impact and fuel efficiency.Based on the analyzed results we suggest that wood pellets will be the most suitable fuel for Svegros facility and heating system. According to the lifecycle cost the new system will have paid off itself after 1,5 years. The savings made each year from changing fuel will be approximately 5,5 million SEK per year compared if the oil still was used. The new fuel will in addition to the financial savings also reduce the carbon dioxide emissions by 2300 tons per year.The consequence of choosing wood pellets as combustion fuel is that you have to combine the pellet burning with biofuel combustion. The combination will make it possible for the plants to survive extremely cold weather conditions during the winter.

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Koutecký, Jan. "Kamna v konceptu moderního vytápění". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225729.

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Thesis deals with stoves, considering them as the main source of heating. The theoretical part is focused on practical and theoretical stove designing and burnnig proces. The designing addresses three of the countless variations on the koncept of modern stove heating. Each variant is unique in its technical and design way of solution. Experiment affects the properties hypokaust stove.

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Піхуник, Назарій Ігорович, e Nazarii Pikhunyk. "Підвищення енергоефективності акумулювання електричної енергії в енергетичних системах на основі відновлюваних джерел енергії". Master's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2020. http://elartu.tntu.edu.ua/handle/lib/33255.

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Створено математичну модель та запропоновано методику розрахунку енергосистем на базі ВДЕ для роботи в режимі віддачі максимальної потужності. Розроблено методику для визначення ємності акумуляторної батареї в енергосистемі на основі ВЕУ.
У кваліфікаційній роботі магістра запропоновано енергосистему на основі відновлюваних джерел енергії із максимальною ефективності акумулювання електричної енергії. Також у роботі розроблено методику для визначення ємності акумуляторної батареї в енергосистемі на основі вітроенергетичної установки, розроблено пристрій оптимального узгодження фотобатареї і акумулятора та пристрій автоматичного управління зарядом акумулятора
In the qualification work of the master the power system on the basis of renewable energy sources with the maximum efficiency of accumulation of electric energy is offered. Also, the method for determining the capacity of the battery in the power system based on the wind turbine is developed, the device of optimal coordination of the photo battery and the battery and the device for automatic control of the battery charge are developed
ПЕРЕЛІК УМОВНИХ СКОРОЧЕНЬ ....... 6 ВСТУП ....... 7 1 АНАЛІТИЧНИЙ РОЗДІЛ ...... 9 1.1 Потенціал відновлюваних джерел енергії в Україні..... 9 1.2 Типи автономних енергосистем на основі відновлюваних джерел енергії .......... 17 1.3 Акумуляторні батареї в енергосистемах на основі відновлюваних джерел енергії ....... 23 1.4 Типи і характеристики акумуляторних батарей ...... 25 Висновки до розділу 1 ...... 28 2 ПРОЕКТНО-КОНСТРУКТОРСЬКИЙ РОЗДІЛ .... 29 2.1 Вітроелектроустановки в енергосистемах на основі ВДЕ ..... 29 2.2 Фотоперетворювачі в енергосистемах на основі відновлюваних джерел енергії ...... 35 2.3 Математична модель роботи фотоперетворювача в системі сонячний фотоперетворювач – електрохімічний акумулятор ..... 36 2.4 Дослідження якості математичної моделі системи фотоперетворювач – електрохімічний акумулятор ...... 40 2.5 Експериментальна перевірка якості математичної моделі системи фотоперетворювач – електрохімічний акумулятор ...... 41 Висновки до розділу 2 ...... 43 3 РОЗРАХУНКОВО-ДОСЛІДНИЦЬКИЙ РОЗДІЛ ..... 44 3.1 Визначення базової схеми системи підтримання фотобатареї в режимі віддачі максимальної потужності ..... 44 3.2 Методика розрахунку пристрою для забезпечення заряду акумуляторної батареї від фотобатареї в режимі максимальної потужності ...... 46 3.3 Експериментальне дослідження ефективності пристрою ПОУФБ-А ...... 50 3.4 Підтримування системи фотобатарея – акумуляторна батарея в точці максимальної потужності у випадку частково затінених секцій фотобатареї ...... 51 3.5 Пристрій для моделювання вольт-амперної характеристики фотобатареї фотоелектричних перетворювачів ........ 52 3.6 Пристрої для підвищення ефективності систем акумулювання в енергосистемах на основі відновлюваних джерел енергії ... 54 3.7 Визначення необхідної ємності системи акумулювання для автономних енергосистем на основі відновлюваних джерел енергії.... 60 3.8 Методика оціночного розрахунку автономної енергосистеми з використанням вітроелектроустановок та систем акумулювання на основі електрохімічних акумуляторів ..... 65 3.9 Оціночний розрахунок комплексної енергосистеми ..... 66 Висновки до розділу 3 ........ 68 4 ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ ....... 69 4.1 Безпека робіт при монтажі та експлуатації вітроустановок ..... 69 4.2 Надзвичайні ситуації природного характеру ...... 71 ЗАГАЛЬНІ ВИСНОВКИ ........ 74 ПЕРЕЛІК ПОСИЛАНЬ ....... 75 ДОДАТОК А. Програма для побудови гістограми закону розподілу ймовірності періодів відсутності вітру ...... 79 ДОДАТОК Б. Приклад оціночного розрахунку енергосистеми на основі вітрогенераторів ...... 80

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Adler, Anneli. "Accumulation of elements in Salix and other species used in vegetation filters with focus on wood fuel quality /". Uppsala : Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200706.pdf.

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Jestřáb, Tomáš. "Vliv akumulace na provoz distribuční sítě". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-317079.

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This diploma thesis introduces the reader to the possible types of electric energy storage technologies, their comparisons and utilization. After its introduction, it follows the description of individual technologies and principles that are currently meaningful and useful in practice. The thesis continues with the part characterizing the ways of using the accumulation in the grid. However, the main points of this thesis include the analysis of the influence of the photovoltaic installation on the specified distribution grid operation at the low voltage level and the analysis of the influence on the grid with connected accumulation. Another important objective was the model for the calculation of steady-state, which was programmed on the basis of the theory supported by the principles of production from intermittent sources and the principle of accumulation function. The outputs of the model in the form of the calculated voltage ratios at the individual supply points and current flows at the distribution transformer point were used to evaluate the analyzes mentioned above. The courses of the calculated parameters are broken down by different scenarios (according to the period, the degree of integration of production and the accumulation or the power output of the production), graphically processed and compared from the point of view of voltage fluctuations and changes in the power (or current) balance of the supply transformer.

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Dolinský, Filip. "Ostrovní systémy". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378496.

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Master thesis deals with usage issues of autonomous, self-sufficient and decentralized systems. In the first part convectional and experimental sources for autonomous systems are disclosed. Second chapter deals with accumulation of electrical and thermal energy and possibilities of applications. 3rd part is focused on pilot project realized for autonomous and smart systems, which were built in last years. In the 4th chapter electrical and thermal energy consumption curves are made on daily and monthly basis for 4 type objects. In the fifth part issue of autonomy is explained, and for type buildings solutions are made with additional return on investment. The last chapter is focused on calculation of thermal accumulator and briefly discloses small district heating.

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Horáčková, Leona. "Energetická náročnost budovy s téměř nulovou spotřebou energie". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409866.

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The master thesis is focused on rating of buildings with almost zero energy consumption. Theoretical part summarizes general requirements on buildings with almost zero energy consumption. It also discusses other categories of buildings on terms of energy demand and influences and factors affecting the energy performance of buildings. The calculating part comparing three different construction systems of designed family house by means of energy demand with energy assessment and energy performance certificate of buildings.

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Ковердюк, Віталій Валентинович. "Оптимізація процесів розподілу енергії у комплексі відновлюваних джерел енергії малої потужності з накопичувачами енергії". Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/46818.

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Актуальність теми. Всім відомий тренд на здешевлення технологій, устаткування, що використовується у відновлюваній енергетиці. Дзеркально відбувається і здешевлення технологій для energy storage. Це пришвидшить розвиток, розбудову цих проектів, а також їх поширення. Тому так, Україна відстала від впровадження законодавчої бази та інвестування в energy storage, але не настільки критично, як можна припустити. Важливо зазначити, що встановлення нових генеруючих потужностей (в основному, це стосується та актуально для «зеленої» енергетики) вимагає інвестування не лише в генерацію як таку, а й у складні технології та інфраструктуру, у тому числі, в системи зберігання енергії. Проте впровадження нормативно-правового регулювання стосовно здійснення діяльності по проектуванню / будівництву / експлуатації / виведенні з експлуатації систем зберігання енергії, не вирішить проблему зношеності мереж. Питання модернізації мереж є одним з найбільш критичних питань в енергетичному секторі України, яке потребує нагального вирішення, адже близько 17% обладнання підстанцій та майже 67% ліній електропередач експлуатуються понад 40 років (згідно даних НЕК «Укренерго», вказаних у Плані розвитку системи передачі на 2020-2029 роки, що має бути затверджений НКРЕКП 13 березня). Мета та завдання дослідження. Метою дисертаційної роботи є: опрацювання питань щодо оптимізації процесів розподілу електроенергії у комплексі відновлюваних джерел енергії малої потужності з накопичувачами енергії. Для досягнення зазначеної мети були поставлені та вирішені такі задачі: - виконано аналіз поточного стану енергетичного сектора України; - виконано аналіз джерел акумулювання для систем електропостачання; - розглянуто доцільність встановлення енергетичних установок, які працюють з використанням відновлюваних джерел енергії; - вирішено питання оптимального розподілу навантаження між окремими джерелами генерування енергії та системою накопичення енергії. Об’єкт дослідження: процеси розподілу електричної енергії в системах електропостачання. Предмет дослідження: питання щодо проблеми уточнення постановки оптимізації процесів розподілу електричної енергії в системах електропостачання з урахуванням групи чинників різного характеру та характеристик джерел/накопичувачів енергії Методи дослідження. Основу виконаних досліджень було використано алгоритм розподілу ресурсів, який ґрунтується на методі нелокального пошуку запропонованого М.Л. Цетліним і І.М. Гельфандом та підходу Беллмана-Заде. Практичне значення одержаних результатів. У магістерській дисертації отримано наукові результати, що мають цінність для ринку електричної енергії, споживачів електричної енергії, споживачів – власників систем накопичення енергії. Стартап-проєкті пропонується розробка програмного забезпечення, яке дасть змогу споживачу отримати імітацію часового графіка задля оптимального використання джерел енергії, які використовуються в енергокомплексі.
Relevance of the work. There is a whole trend towards cheaper technologies, installation, how to win from new energy sources. Mirror view and cheaper technologies for energy storage. Tse sevvidshit development, rozbudovu tsikh projects, as well as їkh expansion. So, Ukraine has become a part of the legislative basis and investment in energy storage, but it is not so critical, as it can be allowed. It is important to note that the establishment of new generating pressures (in the main, it is important for the "green" energy), investment is not deprived of the generation of yak taku, but at the folding technology and infrastructure in the systems, including the energy supply. In the protest of the normative and legal regulation, one hundred percent of the efficiency of the design / maintenance / exploitation / operation of the energy saving systems, does not break the problem of aging. Nutrition of modernization one of the most critical power supply in the energy sector of Ukraine, as the demand for a major upgrade, is also close to 17% of the ownership of power stations, and even 67% of the power transmission lines are not in use 40 2020-2029 rocky, scho maє buti hardening NKREKP 13 birch). Aim and objectives of the study: Aim and objectives of the study: elaboration of issues related to the optimization of electricity distribution processes in the complex of low-power renewable energy sources with energy storage devices. To achieve this goal, the following tasks were set and solved: - analysis of the current state of the energy sector of Ukraine was performed; - analysis of storage sources for power supply systems was performed; - expediency of installation of power plants operating with the use of renewable energy sources is considered; - the issue of optimal load distribution between separate energy generation sources and energy storage system is solved. The object of the study processes of electricity distribution in power supply systems. Subject of research: optimization of electric energy distribution processes in the complex of low-power renewable energy sources with energy storage devices, taking into account a group of factors of different nature. Subject of research: optimization of electric energy distribution processes in the complex of low-power renewable energy sources with energy storage devices, taking into account a group of factors of different nature. Research methods. The basis of the research was the algorithm of resource allocation, which is based on the method of non-local search proposed by ML Tsetlin and IM Gelfand and the Bellman-Zade approach. Elements of scientific novelty of the obtained results. In the master's dissertation the scientific results which have value for the market of electric energy, consumers of electric energy, consumers - owners of systems of energy storage are received.

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Libri sul tema "Energy accumulation system"

Thaler, Gregory. The Twenty-First Century Agricultural Land Rush. A cura di Ronald J. Herring. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780195397772.013.017.

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The 2007–2008 global food crisis has been followed by a rapid acceleration in large-scale agricultural land deals, which activists have labeled a “global land grab.” This chapter explores the origins of this twenty-first century agricultural land rush, its geography, and the responses it has engendered. The origins of the land rush are located in interlinked food, financial, and ecological crises that are indicative of fundamental shifts in the global political economy. In response to these crises, land grabbing represents an effort to reconstruct a stable political-economic order, both on the part of investment capital seeking to relaunch accumulation and on the part of political actors and companies seeking to secure stable supplies of food and energy. The geography of the land rush is analyzed through the interrelated variables of land availability, the structural position of a country in the global economy, and a country’s domestic institutional structure. Finally, the main theoretical positions in the debate over land deals are linked to distinct political responses. The real historical significance of the structural changes behind the agricultural land rush suggests that the implications of the land rush will be both durable and systemic.

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Capitoli di libri sul tema "Energy accumulation system"

Flizikowski, Józef, Andrzej Tomporowski, Weronika Kruszelnicka, Izabela Piasecka, Adam Mroziński e Robert Kasner. "Electric Cars as a Future Energy Accumulation System". In Springer Proceedings in Energy, 827–39. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13888-2_80.

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Ocłoń, Paweł. "Zero-Emission Building Heating System Using Thermal Energy Accumulation in the Ground". In Lecture Notes in Energy, 37–56. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75228-6_4.

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Yadav, Ankit, Vikas e Sushant Samir. "Ranking of Phase Change Materials for Medium Temperature Thermal Energy Accumulation System Using Shannon Entropy, TOPSIS, and VIKOR Methods". In Multi-Criteria Decision Modelling, 43–63. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003125150-3-3.

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Fiebig, Wiesław. "Accumulation of the Energy in Mechanical Resonance". In Dynamical Systems in Applications, 115–24. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96601-4_11.

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Azouzoute, Alae, Massaab El Ydrissi, Houssain Zitouni, Charaf Hajjaj e Mohammed Garoum. "Dust Accumulation and Photovoltaic Performance in Semi-Arid Climate: Experimental Investigation and Design of Cleaning Robot". In Advanced Technologies for Solar Photovoltaics Energy Systems, 47–74. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64565-6_3.

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Liu, Kai, Nan Wang, Wanlong Cai, Xinke Wang, Fenghao Wang e Bo Xiao. "Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System". In Environmental Science and Engineering, 249–58. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9528-4_26.

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Montero-Sousa, Juan Aurelio, Luis Alfonso Fernández-Serantes, José-Luis Casteleiro-Roca, Xosé Manuel Vilar-Martínez e Jose Luis Calvo-Rolle. "Energy Management Strategies to Improve Electrical Networks Using Storage Systems". In Renewable and Alternative Energy, 1500–1514. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1671-2.ch053.

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The successive energy crises, usually linked to the rising prices of oil, bring about new topics of the energy systems management in general terms. Over all, the electrical system is one of these cases. In addition, a greater concern for environmental issues has introduced, to a greater or lesser extent, the generation from renewable sources in the electrical system. In this context, the possibility of developing and using electricity storage systems would manage mismatches between generation and demand at electricity networks, making them more efficiently. In this research, we propose a number of possible strategies based on technical peak shaving and valley filling. The tool is used as energy storage systems in general terms, regardless of the accumulation technique used. The classification of strategies essentially serves two criteria: optimization service and increased profitability.

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Bunyakin, A. "System of thermal energy accumulation in a soil layer in a combination with wind energy". In Green Design, Materials and Manufacturing Processes, 405–10. CRC Press, 2013. http://dx.doi.org/10.1201/b15002-78.

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Montero-Sousa, Juan Aurelio, Luis Alfonso Fernández-Serantes, José-Luis Casteleiro-Roca, Xosé Manuel Vilar-Martínez e Jose Luis Calvo-Rolle. "Energy Management Strategies to Improve Electrical Networks Using Storage Systems". In Advances in Computer and Electrical Engineering, 63–75. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9911-3.ch004.

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Fujii, Atsushi. "Current Status of the Super Heat Pump Energy Accumulation System in NEDO Projects". In Heat Pumps, 349–60. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-08-040193-5.50045-6.

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Atti di convegni sul tema "Energy accumulation system"

Palacky, Petr, Katerina Baresova, Martin Sobek e Ales Havel. "The control system of electrical energy accumulation". In 2016 ELEKTRO. IEEE, 2016. http://dx.doi.org/10.1109/elektro.2016.7512094.

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Hetsman, K. M., e N. A. Popkova. "APPLICATION OF ENERGY ACCUMULATION SYSTEMS IN THE ENERGY SYSTEM OF THE REPUBLIC OF BELARUS". In Актуальные проблемы электроэнергетики. Нижний Новгород: Нижегородский государственный технический университет им. Р.Е. Алексеева, 2021. http://dx.doi.org/10.46960/44170389_2021_331.

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Friedrischkova, K., D. Vala e B. Horak. "Accumulation system of electric vehicle and its secondary exploitation". In 2015 5th International Youth Conference on Energy (IYCE). IEEE, 2015. http://dx.doi.org/10.1109/iyce.2015.7180755.

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Palacky, Petr, Josef Oplustil, Daniel Kalvar, Miroslav Uchoc e Roman Sprlak. "Two stepped system of converters with accumulation of electrical energy". In 2014 International Conference on Applied Electronics (AE). IEEE, 2014. http://dx.doi.org/10.1109/ae.2014.7011711.

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Korev, D. A., A. J. Abdenov e I. L. Ozernykh. "The model of operating power balance dynamics according to supervision in stochastic system with energy accumulation". In INTELEC 2009 - 2009 International Telecommunications Energy Conference. IEEE, 2009. http://dx.doi.org/10.1109/intlec.2009.5351795.

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Moldrik, Petr, e Robert Sebesta. "Hydrogen fuel cells as a part of the system for accumulation of electric energy". In 2009 10th International Conference on Electrical Power Quality and Utilisation (EPQU). IEEE, 2009. http://dx.doi.org/10.1109/epqu.2009.5318860.

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Bertolino, Antonio Carlo, Gabriele Lombardi, Stefano Mauro e Massimo Sorli. "Modelling of Energy Accumulation in Belt Conveyor Systems Under Faulty Conditions". In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23622.

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Abstract The consideration of potential energy stored in a system is paramount to carry on safe maintenance operations of mechanical system. In particular, this paper concentrates on the elastic energy accumulation occurring in a belt conveyor system ensuing a seizure of one of the pulleys owing to, for example, dirt and spilled bulk material accumulation in the belt inlet zone. The hazard of considering the system completely discharged just because the electrical supply cut off and the effect of such an energy storage are investigated by means of a lumped mass dynamic mathematical model. It allows time variable operating conditions to be considered, as well as starting and stopping phases transients. Standard maintenance operations are simulated, and the effect of stored energy sudden release investigated.

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Burian, Ondrej, e Radek Skoda. "Design and Optimization of Non-Supercritical CO2 Thermal Power Cycle for “P2H2P” Energy Storage System". In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-16027.

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Abstract Most of the current research and development of CO2 cycles for power to heat - heat to power (P2H2P) energy storage systems are focused on applications of supercritical CO2 cycles. However, this work is focused on alternative application of CO2 power cycle with standard (i.e., non-supercritical) cycle and modified industrial turboexpanders as main working machines. Thermal Cycle for power storage system with thermal energy accumulator for energy storage and non-supercritical CO2 power cycle for backward production of electricity is described in this paper. The CO2 cycle is compared with Nitrogen cycle with same parameters as well. Initially, the thermal accumulator design, option of accumulation media (molten salts or liquid metals), and its parameters are described. The main part of the paper is focused on non-supercritical CO2 power cycles. Possible configurations of cycle, design aspects of main parts of cycle, possibilities of efficiency improvement are discussed; such as regeneration or intercooling. Finally, advantages and disadvantages of this CO2 and N2 cycle are discussed and compared. The concluding result of this paper is a very similar efficiency of the two working fluids at the selected parameters.

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Sahm, Aaron, Allison Gray, Robert Boehm e Ken Stone. "Cleanliness Maintenance for an Amonix Lens System". In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76036.

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The Amonix system is a high concentration PV system that utilizes Fresnel lenses to focus the sun’s rays on PV cells. This paper deals with issues related to the cleanliness of the lenses, the impact on performance, and the methods that can be used to clean the lenses. Issues addressed in the paper include the estimation of air-borne dirt accumulation with time. Data found in the course of our study were compared to data given in the literature about loss of transmissivity with acrylic soiling. These data were then modified to account for the two-axis tracking used for the Amonix unit, compared to the fixed orientation of the test. The effects of the loss of transmissivity were used to estimate decreases of the power produced. Costs of cleaning were compared to the lost revenue due to the decrease in sunlight reaching the cell. It is shown that rain is a good cleaning agent for the lenses. Barring precipitation, though, cleaning once a month is recommended.

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Látal, Jan, Petr Koudelka, Petr Šiška, Jan Skapa, František Hanáečk, Vladimír Vašinek, Jan Vitásek, Stanislav Hejduk e Jiří Bocheza. "Fiber optic DTS system application in the research of accumulation possibilities of thermal energy in the rock mass". In SPIE Optics + Optoelectronics, a cura di Francesco Baldini, Jiri Homola, Robert A. Lieberman e Kyriacos Kalli. SPIE, 2011. http://dx.doi.org/10.1117/12.887082.

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Rapporti di organizzazioni sul tema "Energy accumulation system"

Jivkov, Venelin, e Vatko Draganov. Controlled Friction Clutch for Hybrid Propulsion Mechanical Systems with Kinetic Energy Accumulator. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, luglio 2020. http://dx.doi.org/10.7546/crabs.2020.07.13.

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Ostersetzer-Biran, Oren, e Jeffrey Mower. Novel strategies to induce male sterility and restore fertility in Brassicaceae crops. United States Department of Agriculture, gennaio 2016. http://dx.doi.org/10.32747/2016.7604267.bard.

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Abstract Mitochondria are the site of respiration and numerous other metabolic processes required for plant growth and development. Increased demands for metabolic energy are observed during different stages in the plants life cycle, but are particularly ample during germination and reproductive organ development. These activities are dependent upon the tight regulation of the expression and accumulation of various organellar proteins. Plant mitochondria contain their own genomes (mtDNA), which encode for rRNAs, tRNAs and some mitochondrial proteins. Although all mitochondria have probably evolved from a common alpha-proteobacterial ancestor, notable genomic reorganizations have occurred in the mtDNAs of different eukaryotic lineages. Plant mtDNAs are notably larger and more variable in size (ranging from 70~11,000 kbp in size) than the mrDNAs in higher animals (16~19 kbp). Another unique feature of plant mitochondria includes the presence of both circular and linear DNA fragments, which undergo intra- and intermolecular recombination. DNA-seq data indicate that such recombination events result with diverged mitochondrial genome configurations, even within a single plant species. One common plant phenotype that emerges as a consequence of altered mtDNA configuration is cytoplasmic male sterility CMS (i.e. reduced production of functional pollen). The maternally-inherited male sterility phenotype is highly valuable agriculturally. CMS forces the production of F1 hybrids, particularly in predominantly self-pollinating crops, resulting in enhanced crop growth and productivity through heterosis (i.e. hybrid vigor or outbreeding enhancement). CMS lines have been implemented in some cereal and vegetables, but most crops still lack a CMS system. This work focuses on the analysis of the molecular basis of CMS. We also aim to induce nuclear or organellar induced male-sterility in plants, and to develop a novel approach for fertility restoration. Our work focuses on Brassicaceae, a large family of flowering plants that includes Arabidopsis thaliana, a key model organism in plant sciences, as well as many crops of major economic importance (e.g., broccoli, cauliflower, cabbage, and various seeds for oil production). In spite of the genomic rearrangements in the mtDNAs of plants, the number of genes and the coding sequences are conserved among different mtDNAs in angiosperms (i.e. ~60 genes encoding different tRNAs, rRNAs, ribosomal proteins and subunits of the respiratory system). Yet, in addition to the known genes, plant mtDNAs also harbor numerous ORFs, most of which are not conserved among species and are currently of unknown function. Remarkably, and relevant to our study, CMS in plants is primarily associated with the expression of novel chimericORFs, which likely derive from recombination events within the mtDNAs. Whereas the CMS loci are localized to the mtDNAs, the factors that restore fertility (Rfs) are identified as nuclear-encoded RNA-binding proteins. Interestingly, nearly all of the Rf’s are identified as pentatricopeptide repeat (PPR) proteins, a large family of modular RNA-binding proteins that mediate several aspects of gene expression primarily in plant organelles. In this project we proposed to develop a system to test the ability of mtORFs in plants, which are closely related to known CMS factors. We will induce male fertility in various species of Brassicaceae, and test whether a down-relation in the expression of the recombinantCMS-genes restores fertility, using synthetically designed PPR proteins.

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Hovav, Ran, Peggy Ozias-Akins e Scott A. Jackson. The genetics of pod-filling in peanut under water-limiting conditions. United States Department of Agriculture, gennaio 2012. http://dx.doi.org/10.32747/2012.7597923.bard.

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Pod-filling, an important yield-determining stage is strongly influenced by water stress. This is particularly true for peanut (Arachishypogaea), wherein pods are developed underground and are directly affected by the water condition. Pod-filling in peanut has a significant genetic component as well, since genotypes are considerably varied in their pod-fill (PF) and seed-fill (SF) potential. The goals of this research were to: Examine the effects of genotype, irrigation, and genotype X irrigation on PF and SF. Detect global changes in mRNA and metabolites levels that accompany PF and SF. Explore the response of the duplicate peanut pod transcriptome to drought stress. Study how entire duplicated PF regulatory processes are networked within a polyploid organism. Discover locus-specific SNP markers and map pod quality traits under different environments. The research included genotypes and segregating populations from Israel and US that are varied in PF, SF and their tolerance to water deficit. Initially, an extensive field trial was conducted to investigate the effects of genotype, irrigation, and genotype X irrigation on PF and SF. Significant irrigation and genotypic effect was observed for the two main PF related traits, "seed ratio" and "dead-end ratio", demonstrating that reduction in irrigation directly influences the developing pods as a result of low water potential. Although the Irrigation × Genotype interaction was not statistically significant, one genotype (line 53) was found to be more sensitive to low irrigation treatments. Two RNAseq studies were simultaneously conducted in IL and the USA to characterize expression changes that accompany shell ("source") and seed ("sink") biogenesis in peanut. Both studies showed that SF and PF processes are very dynamic and undergo very rapid change in the accumulation of RNA, nutrients, and oil. Some genotypes differ in transcript accumulation rates, which can explain their difference in SF and PF potential; like cvHanoch that was found to be more enriched than line 53 in processes involving the generation of metabolites and energy at the beginning of seed development. Interestingly, an opposite situation was found in pericarp development, wherein rapid cell wall maturation processes were up-regulated in line 53. Although no significant effect was found for the irrigation level on seed transcriptome in general, and particularly on subgenomic assignment (that was found almost comparable to a 1:1 for A- and B- subgenomes), more specific homoeologous expression changes associated with particular biosynthesis pathways were found. For example, some significant A- and B- biases were observed in particular parts of the oil related gene expression network and several candidate genes with potential influence on oil content and SF were further examined. Substation achievement of the current program was the development and application of new SNP detection and mapping methods for peanut. Two major efforts on this direction were performed. In IL, a GBS approach was developed to map pod quality traits on Hanoch X 53 F2/F3 generations. Although the GBS approach was found to be less effective for our genetic system, it still succeeded to find significant mapping locations for several traits like testa color (linkage A10), number of seeds/pods (A5) and pod wart resistance (B7). In the USA, a SNP array was developed and applied for peanut, which is based on whole genome re-sequencing of 20 genotypes. This chip was used to map pod quality related traits in a Tifrunner x NC3033 RIL population. It was phenotyped for three years, including a new x-ray method to phenotype seed-fill and seed density. The total map size was 1229.7 cM with 1320 markers assigned. Based on this linkage map, 21 QTLs were identified for the traits 16/64 weight, kernel percentage, seed and pod weight, double pod and pod area. Collectively, this research serves as the first fundamental effort in peanut for understanding the PF and SF components, as a whole, and as influenced by the irrigation level. Results of the proposed study will also generate information and materials that will benefit peanut breeding by facilitating selection for reduced linkage drag during introgression of disease resistance traits into elite cultivars. BARD Report - Project4540 Page 2 of 10

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Ostersetzer-Biran, Oren, e Alice Barkan. Nuclear Encoded RNA Splicing Factors in Plant Mitochondria. United States Department of Agriculture, febbraio 2009. http://dx.doi.org/10.32747/2009.7592111.bard.

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Mitochondria are the site of respiration and numerous other metabolic processes required for plant growth and development. Increased demands for metabolic energy are observed during different stages in the plants life cycle, but are particularly ample during germination and reproductive organ development. These activities are dependent upon the tight regulation of the expression and accumulation of various organellar proteins. Plant mitochondria contain their own genomes (mtDNA), which encode for a small number of genes required in organellar genome expression and respiration. Yet, the vast majority of the organellar proteins are encoded by nuclear genes, thus necessitating complex mechanisms to coordinate the expression and accumulation of proteins encoded by the two remote genomes. Many organellar genes are interrupted by intervening sequences (introns), which are removed from the primary presequences via splicing. According to conserved features of their sequences these introns are all classified as “group-II”. Their splicing is necessary for organellar activity and is dependent upon nuclear-encoded RNA-binding cofactors. However, to-date, only a tiny fraction of the proteins expected to be involved in these activities have been identified. Accordingly, this project aimed to identify nuclear-encoded proteins required for mitochondrial RNA splicing in plants, and to analyze their specific roles in the splicing of group-II intron RNAs. In non-plant systems, group-II intron splicing is mediated by proteins encoded within the introns themselves, known as maturases, which act specifically in the splicing of the introns in which they are encoded. Only one mitochondrial intron in plants has retained its maturaseORF (matR), but its roles in organellar intron splicing are unknown. Clues to other proteins required for organellar intron splicing are scarce, but these are likely encoded in the nucleus as there are no other obvious candidates among the remaining ORFs within the mtDNA. Through genetic screens in maize, the Barkan lab identified numerous nuclear genes that are required for the splicing of many of the introns within the plastid genome. Several of these genes are related to one another (i.e. crs1, caf1, caf2, and cfm2) in that they share a previously uncharacterized domain of archaeal origin, the CRM domain. The Arabidopsis genome contains 16 CRM-related genes, which contain between one and four repeats of the domain. Several of these are predicted to the mitochondria and are thus postulated to act in the splicing of group-II introns in the organelle(s) to which they are localized. In addition, plant genomes also harbor several genes that are closely related to group-II intron-encoded maturases (nMats), which exist in the nucleus as 'self-standing' ORFs, out of the context of their cognate "host" group-II introns and are predicted to reside within the mitochondria. The similarity with known group-II intron splicing factors identified in other systems and their predicted localization to mitochondria in plants suggest that nuclear-encoded CRM and nMat related proteins may function in the splicing of mitochondrial-encoded introns. In this proposal we proposed to (i) establish the intracellular locations of several CRM and nMat proteins; (ii) to test whether mutations in their genes impairs the splicing of mitochondrial introns; and to (iii) determine whether these proteins are bound to the mitochondrial introns in vivo.

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