Instrumental Method for Determining Energy Efficiency Indicators of Apartment Residential Houses

Purpose of research. The identified inconsistencies with energy-saving standards are usually considered as a set of individual elements. Improvement of the entire system (walls, windows, floor structures, coatings) helps to reduce external heat loss, which, on the whole, leads to heat energy saving in the object under study. The method that considers the element component of a building has some disadvantages, since, as a result of calculations, there is a significant error in determining the specific characteristics of heat consumption for heating and ventilation of a building and, hence, in determining the energy efficiency class of a building. This paper discusses the method of instrumental control of indicators. It offers the method of instrumental control of indicators that determine the class of energy efficiency of an apartment house in accordance with the current requirements of regulatory documents and legislative acts.
Methods.The proposed method makes it possible to perform an assessment using whole-building metering devices for heat and electricity consumption during a calendar year and a short-term instrumental survey in order to clarify some other parameters necessary for evaluating energy efficiency indicators of apartment residential houses. The paper also suggests an equation for converting the value of the measured average internal air temperature during a short-term survey to the average value of air temperature inside the house during the heating period.
Results. The method was tested through the use of a comprehensive instrumental survey of apartment residential houses of standard series 1-447c from the Tambov housing stock. The value of deviation of the actual specific annual heat consumption for heating and ventilation, taking into account the household heat supply of the building in question from the base level (for the given apartment house), is 151•4.8 kWh/m², which corresponds to the deviation of 13 * 0.1 %. Тhe building under consideration must be assigned an energy efficiency class – F (Low).
Conclusion. The given method can be applied by the residents of apartment houses, the employees of state housing inspections and the specialists of organizations conducting energy audits in assessing compliance with regional energy efficiency and consumption targets, for the residential houses and public buildings being commissioned and buildings that are in use when assigning the mentioned buildings energy efficiency class.

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