Renewables-2023

  Most effective usage of Stirling engines by Solar power system Author: David Judbarovski, systems engineering, principle inventor judbarovskidavid@gmail.com     Abstract Planar mirror redirects solar rays on a motionless dish concentrator of about 2.5 m2. In its turn, a small motionless planar mirror at focal spot of the said dish is redirecting the solar rays downward on a hot part of a Stirling engine generator placed on the ground and creating electricity, can be summarized for the grid. It is much cheaper and simpler in building and treatment and most energy effective than any other solar power systems.   For example, for Vilnus region in Lithuania, 7.5 months of snowless season annually, and average 13.5 hr. daily of effective concentration with 50% sky clearness and by 2.5 m2 dish solar concentrating system of $ 30.0/m2, $ 50.0/kW of Stirling engine of its 35% energy efficiency and $ 90.0/kW of electric generators, and $ 400.0/kW of secondary ba...

(А) матмех ЛГУ -  19 экзаменов > (1) математический анализ -  отлично, сразу за 1 и 2 семестры > (2) аналитическая геометрия - хорошо > (3) высшая алгебра - хорошо, сразу за 1 и 2 семестры > (4) линейная алгебра - отлично - за 3 семестр > (5) аналитическая механика - отлично > Все 5 экзаменов сдавал как математик экстерном > вечернее обучение, 3 раза в неделю по 4 часа > (6) математическая физика - отлично > (7) операционные исчислениz - хорошо > (8) теория фунций комплексной переменной - отлично > (9) дифференциальные уравнения - хорошо > (10) приближённые вычисления - отлично, вместе с математиками 5 курса > (11) математическая логика - хорошо > (12) линейное программирование - хорощо > (13) теория функций действительного переменного - отлично > (14) программирование - 120 часов - хорошо > (15) теория графов - 64 часа - отлично, вместе с математиками 5 курса > (16) теория автоматического регулирования - ...

  Integration of RE-s in national grids – Part 1 Background David Judbarovski, systems engineering, principle inventor. judbarovskidavid@gmail.com,  Tkachenko Victor, prof., DSc, director of SPE RESST  NSC KIPT, tkachenko.vikiv52@gmail.com    Just before Covid crisis, Ministry of Energy (DoE), USA publicly admitting that more than 100 GW offshore Wind power capacity built in USA, is not an achievement, but disaster, and were forced to seek help outside their system for ideas (Request for Information (RFI) DE-FOA-0002389 asked by the DoE Office of Energy Efficiency and Renewable Energy (EERE) and Wind Energy Technologies Office (WETO)), how to integrate such gigantic not predictable and not enough cheap power into American national power grids, so admitting that conception of Smart Grids was and is no more than folly. Our way to integrate such huge energy, it is real possibility of backing the national grids by cost competitive carbon neutral artificia...

  Integration of RE-s in national grids – Part 2 Offshore wind power integration David Judbarovski, systems engineering, principle inventor, judbarovskidavid@gmail.com Tkachenko Victor, prof., DSc, director of SPE RESST  NSC KIPT, tkachenko.vikiv52@gmail.com    Abstract R ealistic possibilities to create electricity much cheaper than 1.0 cent/kWh, allows gigantic wind power to integrate in the national grids, it makes my innovation stand out compared to the state-of-art technologies in the field in the innovation to recommend it to be implemented for your company future offshore wind farms. Moreover, I can offer some such technologies including their variants for offshore wind farms, where the lion cost share of them is a price of electric generators was about USD 80.0/kW, or 8000 cent / (5 years payback * 8766 hours / 0.5 capacity factor)   =~ 0.35 cent/kWh Q.EG !   It can be a matrix of numerous small conventional wind turbines, being in...

About huge wind power integration David Judbarovski, systems engineering, principle inventor judbarovskidavid@gmail.com , judbarovski@gmail.com   Background: Just before Covid crisis, Ministry of Energy (DoE), USA publicly admitting that more than 100 GW offshore Wind power capacity built in USA, is not an achievement, but disaster, and were forced to seek help outside their system for ideas (Request for Information (RFI) DE-FOA-0002389 asked by the DoE Office of Energy Efficiency and Renewable Energy (EERE) and Wind Energy Technologies Office (WETO)), how to integrate such gigantic not predictable and not enough cheap power into American national power grids, so admitting that conception of Smart Grids was and is no more than folly. Our way to integrate such huge energy, it is real possibility of backing the national grids by cost competitive carbon neutral artificial fuels synthesized from atmospheric CO2 and H2 from the water split by electricity cheaper USD 0.01/kW...