explained by both unapproved deviations from the design project made by a subcontractor during construction and low-quality construction and assembly work. It is strongly suggested to improve the structural solution of edge zones in envelopes to reduce thermotechnical risks when designing buildings. Supplementary insulation along the surfaces of the walls can be considered as another activity to increase heat protection.
The objective of the article is the energy efficiency assessment of an energy-saving measures complex on the basis of calculation-and-experiment control of building energy-saving. An experimental determining of energy indices of multi-apartment residential building during heating period was carried out. The energy audit was carried out applying express method which allows reducing significantly the labour intensity as well as the duration of the field observation. The thermal energy consumption for heating and hot water supply as well as electrical energy consumption during heating period were determined on the basis of the energy audit results. The energy efficiency class of the building is С (normal). Thus it has been stated that the building inspected conforms to the normative requirement. The verification of the calculation method for building energy indices during heating period was conducted on the basis of experimental investigations results, which confirmed the method reliability. The method for calculating the building energy indicators during the heating period including the consumption of thermal energy for heating and hot water supply and the electrical energy consumption was developed. Based on the calculation results it is possible to show that decrease of building envelope air permeability allows to raise a class of building energy efficiency.
Abstract. The paper presents new thermal design of external wall S. Radonezhskiy temple in Volgograd is developed according to author's concept. The three-layer brick wall, including a thermal insulation layer from concrete with polystyrene aggregates, is considered. Calculation of interstitial condensation in building component is carried out according to simplified calculation method developed by the author and harmonized to ISO 13788. Analysis of calculation results shows that condensation occurs at one interface during some months but there is no accumulation over the year as all the condensate is predicted to evaporate again. Thus, there is no systematic moisture accumulation at the building component within a year. The risk of run-off from non-absorbent materials will be very low. Analysis of the evaporation rates at the interface shows that duration of drying wetted layer in external wall during initial stage does not exceed admissible values.
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