2022-03-en

Installations that convert the kinetic energy of wind into electricity are large due to the low air density. A variant of a sailing power plant is known that converts the energy of a wind flow into the energy of a water flow, which makes it possible to reduce the size of the energy converter, but its efficiency decreases, since part of the energy of the wind flow is spent on moving

Based on the calculations of the Earth’s insolation, changes in the annual meridional insolation gradient were determined in the period from 3000 BC to 2999. Changes in the meridional insolation gradient are associat-ed with changes in the angle of inclination of the Earth’s rotation axis.

he article is an interview of Kirill Degtyarev, the deputy chief editor of the journal, with Andrey A. Lukashov, a chair professor of Department of Geomorphology and Paleogeography in Geographical Faculty of Lomonosov Moscow State University, professor emeritus of Lomonosov MSU, Dr. habil

A water cooling system of the photovoltaic module has been developed. An experimental study of the efficiency of water cooling for real operating conditions in a region with high ambient temperatures has been carried out. The experiment showed that in the climatic conditions of the Astrakhan region, water cooling of a photovoltaic module provides a significant increase in its output power and efficiency.

The renewable energy capacities in Ukraine on 01.07.2021 were at 9225 MW. The solar power plants were topping with 7284 МВт or 79% of total, including 6351 MW of network and 933 MW of household capacities. Wind farms followed it with 1593 MW. Bioenergy plants had 230 MW of the total capacities including 119 MW on biomass and 111 MW on biogas