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In recent years, all over the world and in Turkey, as aresult of, increasing population, industrial and urban developpment and reasing life standarts, the fosil fuels have dramatically been used up and caused environmental pollution. Since it has been recognized that energy sources such as petroleum and coal are non renewable energy sources and they are limited, researches have been concentrated on the biomass energy, wind energy, solar energy and hydro-energy which are renewable and obtained easily in all world. ...

Renewable energy sources (RES) at the Slovak Republic have only 1,6 \% part in general of power consumption. The development of RES utilization in definitely within the priorities and will positively become evident in political economy of Slovak Republic in several spheres: 1. Level increasing of a home energy sources value 2. Decreasing depends on external energy supplies, which currently cover approx.90\% of the total consumption of the primary energy sources. 3. Improvement of foreign market balance (because th...

The paper analyzes geopolitical circumstances on the global oil market towards the beginning of the 21st century. After the oil price leap, the global oil market has entered the phase of possible energy-related crises, political instability and major disturbances. Such a condition makes the energy-related situation of energy importers rather difficult, especially when it comes to relatively small countries outside of geopolitical integrations, but also makes the need for energy savings topical once again, along wi...

The purpose of this article is to present methods and software tools to ensure an optimal decision process for controlling the greenhouse climate. The efficiency of plant production in greenhouses depends significantly on the adjustment of optimal climate growth conditions to achieve high yield at low expense, good quality and low environmental load. To achieve these goals several components (temperature, air humidity and CO2 concentration) must be controlled optimally given certain criteria through heating, venti...

In recent years, all over the world and in Turkey, as a result of increasing population, industrial and urban development and rising life standarts, the fosil fuels have dramatically been used up and caused environmental pollution. Since it has been recognized that energy sources such as petroleum and coal are non-renewable energy sources and they are limited, researches have been concentrated on the biomass energy which is renewable and optained easily in all world. In this study, from the available statistical d...

The crushing energy in mineral processing industry is usually determined by experimental Bond’s index regardless mechanical parameters of rocks. Bond’s index is a comminution parameter which was defined by Bond. In this study, with the purpose of correlating the strain energy of rock to the corresponding energy estimated by Bond’s index, cubic Granite specimens are simulated between two rigid jaws and are broken due to movement one of the jaws against the other. The specimens are modeled as elasto-plastic me...