Phase formation and relaxor properties of lead-free perovskite ceramics on the base of sodium-bismuth titanate

The work was supported by the Russian Foundation for Basic Research (Projects 16-53-48009, 17-03-00542)

Solar Concentrating Modules With Louvered Heliostats: Emerging Research and Opportunities

Используемые программы Adobe AcrobatThe development of solar energy is becoming increasingly widespread all over the world. One significant way to reduce the cost of energy generated by solar modules, as well as reduce the need for centralized energy supply, is the use of non-tracking concentrator solar modules integrated into the building structure. As this area of engineering gains interest from all sectors, it is crucial to understand how to increase productivity in order to make solar modules an excellent source of energy.Solar Concentrating Modules With Louvered Heliostats: Emerging Research and Opportunities is an essential publication that formulates a scientifically based approach to the development of non-tracking solar modules with a system of linear louvered heliostats and the selection of the operating mode of the developed modules depending on various requirements of the consumer of thermal or electric energy. The proposed design can solve the problem of the lack of space for placing solar energy facilities in the city, as well asРазвитие солнечной энергетики получает все большее распространение во всем мире. Одним из существенных способов снижения стоимости энергии, вырабатываемой солнечными модулями, а также уменьшения потребности в централизованном энергоснабжении является использование солнечных модулей-концентраторов без слежения, встроенных в конструкцию здания. Поскольку эта область техники вызывает интерес во всех секторах, крайне важно понять, как повысить производительность, чтобы сделать солнечные модули отличным источником энергии. Солнечные концентрирующие модули с жалюзийными гелиостатами: новые исследования и возможности, это важная публикация, в которой сформулирован научно- обоснованный подход к разработке солнечных модулей без слежения с системой линейных жалюзийных гелиостатов и выбору режима работы разработанных модулей в зависимости от различных требований потребителя тепловой или электрической энергии. Предлагаемая конструкция может решить проблему нехватки места для размещения объектов солнечной энергетики в го

Results of R and D for lithium/vanadium breeding blanket design

The self-cooled lithium/vanadium blanket concept has several attractive features for fusion power systems, including reduced activation, resistance to radiation damage, accommodation of high heat loads and operating to temperatures of 650--700 C. The primary issue associated with the lithium/vanadium concept is the potentially high MHD pressure drop experienced by the lithium as it flows through the high magnetic field of the tokamak. The solution to this issue is to apply a thin insulating coating to the inside of the vanadium alloy to prevent the generation of eddy currents within the structure that are responsible for the high MHD forces and pressure drop. This paper presents progress in the development of an insulator coating that is capable of operating in the severe fusion environment, progress in the fabrication development of vanadium alloys, and a summary of MHD testing. A large number of small scale tests of vanadium alloy specimens coated with CaO and AlN have been conducted in liquid lithium to determine the resistivity and stability of the coating. In-situ measurements in lithium have determined that CaO coatings, {approximately} 5 {micro}m thick, have resistivity times thickness values exceeding 10{sup 6} {Omega}-cm{sup 2}. These results have been used to identify fabrication procedures for coating a large vanadium alloy (V-4Cr-4Ti) test section that was tested in the ALEX (Argonne Liquid metal Experiment) facility. Similar test sections have been produced in both Russia and the US