The article points out that exhaustion of fossil stocks of fuel and negative impacts of fuel burning on environment determined a significant interest in technologies of heat utilization of low-potential sources in many developed countries of the world. Therefore the solution of the problem of using heat utilization technologies of low-potential sources will be of great importance for preserving people's habitats. In Russia, the most promising area of using unconventional energy sources is heat supply systems of houses and buildings. The conducted analysis shows that one of the effective directions of energy saving is heat pump systems of heat supply, using the most available low potential heat source of flooded massif of soil. It is noted that a huge energy potential of water pumped from closed mines is practically unused because of considerable distance of heat consumers from water purification complexes.
Abstract.The analysis of the impact of various modifiers on the mixture and concrete properties is carried out. The conditions of performing foundation structures in Rostov region are pointed out. The usage of rational methods of experimental planning the influence of micro silica compositions on the properties of concrete is investigated. The results of the calculations and statistical assessment of the obtained dependences allow predicting the strength of concrete in compression and, if it is necessary, adjusting the composition.
the article deals with the features of groundwater treatment in town Shakhty after the closure of mining enterprises. A high concentration of salts and solids in the treated waters was noted. The positive experience of phyto purification by using aqueous hyacinth - Eichornia is considered. The existing scheme of pumped ground water purification is presented and the results of studies of water temperature regime in ponds sumps of mine water are given. The possibility of providing a nutrient medium and extending the growing season of a thermophilic plant during the groundwater treatment of groundwater and wastewater is indicated.
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