Among the many environmental dates, celebrated throughout the year, stands out June 5 - World Envir

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Among the many environmental dates, celebrated throughout the year, stands out June 5 - World Environment Day, which was founded in 1973. The choice 22 shells bulk of this date based on the fact that this day has opened the United Nations Conference on the problems of the environment. The annual celebration helps raise awareness of environmental issues and emphasizes the urgent need for a change in man's relation to the rational use and reproduction of natural resources. It is known that natural resources are exhaustible, and their stocks 22 shells bulk are recovered or very slowly, or not renewed, and is inexhaustible - solar and wind energy and water, bio energy. I use the latter, may draw it that the impending loss limit global 22 shells bulk equilibrium of the planet. That is it - alternative 22 shells bulk energy, 22 shells bulk and how each of us can, making little effort to save on energy costs, thereby minimizing the impact 22 shells bulk on the environment, said Professor 22 shells bulk of Renewable Energy National University "Kyiv Polytechnic Institute", Doctor of Science John down. - Ivan, I know that in the laboratory department invented many ways to use renewable energy sources. Tell, please, about your development. - In the laboratory study crystallization water, and uses the heat released when it becomes ice, or for heating or for heating of air for ventilation. For example, 40 liters of water turned into ice, isolated amount of heat equivalent to burning 1 kg of firewood. If the traditional heating air enters the heater with temperature, depending on the ambient temperature, about -10 ... -20 º C, in any case, the air passing through freezing 22 shells bulk water, heated to a temperature of -2 ... -3 º C, and accordingly, while in the heater must be expended energy is 1.5-2 times less. In addition, we study heat pumps - these are devices that allow you to raise the temperature of energy potential. For example, we can take the heat with cold air, water and raise the temperature to 50-80 º C. And, if you include an electric heater, with 1 kW can be obtained only 1 kW, and if - heat pump, with 1 kW 3-6 kW is available. 22 shells bulk Thus, there is a significant benefit, and it increases with increasing temperature of the environment from which pick low potential temperature. The laboratory is a solar collector. The temperature of the water that we get in it, reaches 80-85 º C. The collector has an area of 0.5 m2 and a volume of 5 liters. If it is set to normal view homes, even in rural areas, the 5 liters of water is known to all women, it is enough to wash the dishes. You heat the water for a day 3-4 times. The collector is a two metal plates between which a hole filled with water. If there is no water supply, 22 shells bulk you can just pour the water back. If it is, then you can squeeze water heated cold coming from the bottom. Of course, continuously heated water in this reservoir is not possible, because the density of the heat flux from the sun is an average of 300-500 W/m2 per day in the summer noon is about 1000 W/m2. Therefore, a large flow