PHOTOVOLTAIC ENERGY SYSTEMS–AN ENVIRONMENTALLY FRIENDLY SOLUTION FOR A COAL MINE
Photovoltaic energy systems are an important part of the systems for obtaining energy from
renewable sources. Generating electricity from renewable sources is becoming more …
renewable sources. Generating electricity from renewable sources is becoming more …
BIOMASS--A SOLUTION FOR BUILDING'S HEATING IN A MOUNTAIN AREA.
Abstract Systems based on biomass for energy production may increase economic
development without contributing to the greenhouse effect, because biomass is not a net …
development without contributing to the greenhouse effect, because biomass is not a net …