Assessment of Energy Saving When Using Natural and Artificial Lighting in Moscow

Natural lighting of buildings has a beneficial effect on the morphological and functional characteristics of the human organism, and also helps to save energy for artificial lighting during daylight hours. Therefore, calculations of natural lighting are carried out taking into account the area of the light opening, the increase of which will contribute to reducing the energy spent on artificial lighting, as well as increasing heat gain from solar radiation and, as a result, heat conservation. However, there will also be an increase in transmission heat loss due to the filling of the light opening. To solve the problem of the optimal size of the area of the light opening, this paper considers the energy and economic criteria developed by the authors earlier. The energy criterion is based on the compilation of the thermal balance of the room at the achieved normalized level of natural lighting, taking into account changes in these factors: heat release from artificial light sources, heat gain from solar radiation and transmission heat loss. The economic criterion takes into account the cost of heat and electricity. Calculations were carried out according to the considered criteria for premises of various purposes: residential, office and school class. It is shown that, according to energy indicators, an increase in the area of the light opening is advantageous, while according to economic indicators it is unprofitable for three months of the heating period for all premises. Thus, the paper shows the possibility of assessing the feasibility of increasing the area of the light opening for the premises of buildings according to energy and economic indicators.

I.А. SHMAROV¹, Candidate of Sciences (Engineering);
E.V. KORKINA^1,2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
L.V. BRAZHNIKOVA¹, Engineer;
O.G. GAGARINA³, Engineer

¹ Scientific-Research Institute of Building Physics of RAACS (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)
² National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
³ National Research University «Moscow Power Engineering Institute» (14, bldg.1, Krasnokazarmennaya Street, Moscow, 111250, Russian Federation)

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