Magazine of Civil Engineering, No.8(52), 2014
Building walling. Energy efficiency of buildings


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Энергоэффективность ограждающих конструкций зданий

Energy efficiency of building envelope

November, 12–13th, in Saint-Petersburg the 7th International congress "Energy efficiency. XXI century" took place. The reports were done in breakuo groups according to the various aspects of energy efficiency challenge: HVAC systems, water supply and sewerage systems, gas supply, energy metering. One of the grourps was devoted to thermophysics of buildings and energy effective design of building envelope.   
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STRUCTURES
Энергоэффективность многослойной конструкции «Сельская стена» при проектировании малоэтажных зданий

T.A. Golova, A.P. Denisova
Energy efficiency of the Rural Wall multi-layer structure  in low-rise building design

This paper presents the study on energy efficiency of various wall design solutions and a new multi-layer wall design for low-rise construction as well as the thermovision results for multi-layer and single-layer envelopes. Indoor climate parameters for various wall design solutions were determined. The study reveals the optimal wall design solutions and specifies the theoretical assessment of their energy efficiency in compliance with Russia's national building code 23-02-2003.
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MATERIALS
Повышение предела огнестойкости деформационных швов строительных конструкций с помощью интумесцентной герметизирующей композиции

I.A. Osipov, O.A. Zybina
Increase in fire resistance of building expansion joints via intumescent sealant composition

In this paper, we consider the possibility of increasing the fireproof efficiency of the intumescent sealant composition for the heat-insulating unit when sealing expansion joints between concrete elements. Fire protection of building structures is a part of the general system of measures to ensure fire safety and fire resistance of buildings and structures. It aims to reduce the structures’ fire hazard and provide them with the required fire resistance.
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Многофакторная оценка теплового режима в элементах оболочки здания

S.V. Korniyenko
Multifactorial forecast of thermal behavior in building envelope elements

Thermal performance of buildings is the key aspect of energy saving and energy efficiency enhancement. The thermal behavior of a building is formed under the influence of many factors. The complexity of the process of heat transfer through envelope structures makes the problem of multifactorial assessment of thermal behavior in building envelope elements crucial.
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CALCULATIONS
Моделирование процессов нестационарного переноса тепла в стеновых конструкциях из газобетонных блоков

A.S. Gorshkov, P.P. Rymkevich, N.I. Vatin
Simulation of non-stationary heat transfer processes in autoclaved aerated concrete-walls

This paper shows the influence of mortar joints on the thermal resistance of external walls made of autoclaved aerated concrete blocks. Due to the fact that the thermal conductivity of cement mortars and adhesives is significantly higher than the thermal conductivity of autoclaved aerated concrete products, their effect must be considered when designing the walling.
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Расчет усиливаемых ограждающих конструкций из тонкостенных элементов открытого профиля

M.N. Ubaydulloyev
Calculations of strengthened open profile thin-walled element enclosing structures

This paper presents the variational calculation method for open profile thin-walled bar systems strengthened under load. The main ratios of the theory are given. The calculation of the stress-strain state of the strengthened structure consists of the following stages.
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