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METHODS TO IMPROVE ENERGY EFFICIENCY OF BUILDINGS DURING RECONSTRUCTION

Vestnik MGSU 7/2018 Volume 13
  • Leonova Anna Nikolaevna - Kuban State Technological University (KubGTU) andidate of technical sciences, the associate professor, Kuban State Technological University (KubGTU), 2 Moskovskaya st., Krasnodar, 350072, Russian Federation.
  • Kurochka Maria Vyacheslavovna - Kuban State Technological University (KubGTU) student, Kuban State Technological University (KubGTU), 2 Moskovskaya st., Krasnodar, 350072, Russian Federation.

Pages 805-813

Subject: introduction of energy-efficient materials and decisions in the field of reconstruction is the factor influencing the reduction of heat losses. Use of such materials and decisions leads to considerable economy and improvement of heat insulation properties of the building. Research objectives: establish efficiency of application of methods of passive and active protection of buildings against heat losses and increase of energy-saving during reconstruction. Materials and methods: theoretical and methodological basis of the research was the scientific work of domestic and foreign scientists on the issues of energy efficiency management and introduction of energy-saving technologies at capital construction facilities and educational institutions. General scientific research methods (analysis, synthesis, generalization), comparison method, classification method were used during the research. Detailed thermograms of buildings, thermal imaging examinations, and monitoring of microclimate parameters were used. Results: modern approaches to the problem of energy-saving and provision of comfortable living conditions are investigated. The analysis of the use of active and passive methods to improve energy efficiency of buildings is carried out. Conclusions: improving the energy efficiency of buildings during reconstruction must be addressed comprehensively, taking into account measures aimed at increasing the effect of fuel and energy resource consumption.

DOI: 10.22227/1997-0935.2018.7.805-813

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Substantiation of the simplified method of determining heat losses through underground parts of building enclosures

Vestnik MGSU 1/2016
  • Samarin Oleg Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Heating and Ventilation, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 118-125

Currently, the successful development of construction industry depends on the improved energy performance of buildings, structures and facilities, as well as on the quality assurance of the indoor climate. The approximate calculation of two-dimensional temperature field of the ground outside the underground part of the building is considered using the analytical solution of differential equation of thermal conduction by the method of sources and sinks according to the existing boundary conditions. This problem is a very high-priority task now because of actualization of building standards in Russian Federation and because of the increasing demands to safety and security of heat supply. That’s why it is very important to find a simple but accurate enough dependence for the heat losses through the floor situated on the ground. The results of the estimation of thermal resistance of floor areas on the ground are presented on the basis of the obtained temperature field. The comparison of these results with the regulatory requirements specified in SP 50.13330.2012, and with the data of numerical calculations of other authors using finite difference approximation of the thermal conduction equation with consideration of soil freezing is held. It is shown that the requirements of the SP 50.13330.2012 are physically reasonable, and numerical calculations can also be described by the analytical dependence obtained in this paper with appropriate selection of the numerical coefficients with the preservation of engineering form of the calculation procedure. The obtained model is easy to use in engineering practice especially during preliminary calculations. The presentation is illustrated with numerical and graphical examples.

DOI: 10.22227/1997-0935.2016.1.118-125

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