Temperature Evaluation of a Building Facade with a Thin Plaster Layer under Various Degrees of Cloudiness

Elena V. Korkina, Ekaterina V. Gorbarenko, Elena V. Voitovich, Matvey D. Tyulenev and Natalia I. Kozhukhova ()
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Elena V. Korkina: Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences, 21, Lokomotivny Proezd, Moscow 127238, Russia
Ekaterina V. Gorbarenko: Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences, 21, Lokomotivny Proezd, Moscow 127238, Russia
Elena V. Voitovich: Department of Industrial and Civil Engineering, Moscow Polytechnic University, 38, Bolshaya Semyonovskaya St., Moscow 107023, Russia
Matvey D. Tyulenev: Department of Heat and Gas Supply and Ventilation, Moscow State University of Civil Engineering, 26, Yaroslavskoe shosse, Moscow 129337, Russia
Natalia I. Kozhukhova: Department of Material Science and Material Technology, Belgorod State Technological University Named after V.G. Shukhov, 46, Kostukov, Belgorod 308012, Russia

Energies, 2023, vol. 16, issue 15, 1-11

Abstract: In this paper, we investigate the surface temperature of a wall with a facade heat-insulating composite system (FHIC), which has a thin plaster layer, taking into account solar radiation exposure at different degrees of cloudiness during the month. The object of study is a wall with FHIC, on the outer surface of which temperature sensors were mounted and measurements were taken. Air temperatures were also measured for one month of the warm period of the year. The coefficient of absorption of solar radiation by the surface of the facade is calculated based on the measurement of the spectral reflection coefficient. Measurements of direct and scattered solar radiation arriving on a horizontal surface were carried out, and the cloudiness of the sky was also recorded. The calculation of direct and scattered solar radiation was carried out, taking into account the shading of surrounding buildings using the authors’ novel methods. The experimental days were divided into three groups according to the degree of cloudiness; statistically significant differences between the groups for the studied parameters were demonstrated. The temperature of the outer surface of the wall was calculated according to A.M. Shklover’s formula. The measured values of the temperature of the outer surface of the wall were compared with the calculated ones. It was shown that there is a good correlation between the measured and calculated temperatures for different degrees of cloudiness. At the same time, for days with no or slight cloudiness (Group I), when direct solar radiation predominates, the differences reach 1.7 °C; smaller differences are observed for days with average cloudiness (Group II) during daytime hours, with a maximum difference of 0.5 °C; and on days with continuous cloudiness (Group III), when only scattered radiation is present for daytime hours, the maximum difference is 0.3 °C. Statistically significant differences were found between the measured and calculated temperatures for groups of days, divided by the degree of cloudiness, for the experimental period of a day from 10 a.m. to 5 p.m., which indicates the possibility of considering amendments to A.M. Shklover’s formula for sunny days. The results of comparing the measured and calculated heating temperatures of the facade surface also indirectly confirm the correctness of the author’s calculations of the incoming solar radiation, taking into account the effect of the surrounding buildings. The results obtained can be used to study the inertia and durability of building structures under solar radiation.

Keywords: solar radiation; absorption of solar radiation; heating temperature; energy saving; degree of cloudiness (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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