Influence of the Opposing Building on the Arrival of Reflected and Diffuse Solar Radiation

In the construction industry, one of the priority areas is energy conservation, to ensure which methods based on theoretical and experimental prerequisites are developed, which are used at various stages of building design. One of the factors that contribute to energy saving and, therefore, are taken into account when calculating the energy spent on heating and ventilation of buildings is the heat gain from solar radiation. According to Russian regulatory documents, calculations of heat input from solar radiation to the building under study are carried out without taking into account the overlap of part of the sky with buildings of the surrounding development. So, in the presence of an opposing building, the amount of incoming direct and diffuse solar radiation on the celestial hemisphere can be significantly reduced, but the buildings of the development also reflect solar radiation. Theoretical methods are being developed to account for solar radiation that is overlapped and reflected by buildings. However, there are no methods of accounting for the overlapped diffuse solar radiation and the reflected solar radiation arriving instead. The method of analytical calculation that can be used to simultaneously calculate the values of incoming diffuse, overlapped diffuse, and reflected solar radiation from an opposing building is proposed. The application of the method is illustrated by an example. It is shown that the opposing building can increase the intake of diffuse solar radiation due to the reflected component.

E.V. KORKINA^1,2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.D. TYULENEV², postgraduate (This email address is being protected from spambots. You need JavaScript enabled to view it.);
E.V. VOITOVICH^1,2, Candidate of Sciences (Engineering)

¹ Research Institute of Building Physics of the Russian Academy of Architecture and Construction Sciences(21, Lokomotivniy Driveway, Moscow,127238, Russian Federation)
² National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

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