In this research the alternative method is presented increases of oil recovery of an oil collector. Shock wave impact on layer. The technology is developed, advantage of this method is shown in comparison with layer hydraulic fracturing. For increase oil recovery and restoration of wells the traditional is widely applied technology of hydraulic fracturing of layer (flyuding), allowing on the short period to recover a well. Sense of a flyuding that hydrostatic pressure is created is considerable exceeding mountain and bringing to a rupture of a collector on one or several cracks. In this work the alternative technique of increase in oil recovery is offered by creation of a shock wave small intensity in the bottom fluid. With a high frequency of repeatability set of blows increases quantity of micro cracks in collector rock, increasing coefficient of permeability of layer without breaking its connectivity.
The object of research is the critical geometry of a three-dimensional air flow in a cavern between two vertical heated plates. In this rate the convection's contribution to heat transfer will be limited due to thermal conductivity at a fixture temperature drop. A three-dimensional RANS approach closed by the k-w SST turbulence model in conjunction with the energy equation. The model validated and verified by comparison with the experimental results. The results of the work applied in developing of ventilated façades.
In this article the capacity of systems of rear ventilated facades is defined. In work theoretical dependences of the main characteristics of the flow, helping to pick up an optimum design in thermogravitational convection conditions are offered.
The article presents results of energy inspection of an educational building “Hydrotechnical building-2” of the Saint-Petersburg State Polytechnical University. The energy audit was carried out to estimate energy resources performance and define opportunities for its increase. According to the results of energy audit the analyses of state of energy consumption are provided. The class of energy efficiency is defined. The recommendations and prospective opportunities to save energy and increase power efficiency of “Gidrokorpus-2” are presented as a resume of this article.
Russia has extensive experience in the design and construction of typical series of residential apartment buildings. When there is a library of standard projects for which additional expertise is not required, this significantly reduces both the price and the construction time of the facilities. Accordingly, the cost per square meter is reduced. Currently, to reduce the cost of construction, some developers use enclosing structures made of materials with high thermal conductivity, thereby reducing the energy efficiency of buildings and structures. In this article, on the example of houses of mass series 1-447, the thermotechnical calculation of enclosing structures was carried out and the option of the optimal position of the insulation was determined. The temperature distribution of the building envelope is presented.
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