Development of Calculated Resistances to Heat Transfer of Floors via the Ground Using Modern Methods of Their Thermal Protection

The aim of the article is to develop the calculated parameters of the floors on the ground, consistent with the use of traditional methods of calculating heat loss “by zones” for two modern designs of thermal protection for different types of soils. The result is achieved by calculating the unsteady annual thermal regime of the soil together with the structures of the building lying on the ground. The calculation is performed by the finite difference method. For modeling of long-term two-dimensional temperature field of soil and creation of initial temperature conditions close to average long-term conditions, at first, the calculation of the annual thermal regime of the soil together with the construction of the building was carried out according to the climatic data of the average “typical” year, and then the temperature field changing during the year according to the calculated “standard” year was calculated. The article deals with the problem of heat insulation of the underground part of the socle wall and the outer surface of the earth filling under the building at different resistance of heat insulation to heat transfer, the height of the filling under the floor and the types of soil. The value of the heat loss of the floor via the ground is influenced by all the factors considered: the resistance of heat insulation to heat transfer, the depth of heat insulation of the wall, the height of the earth filling under the building, the type of soil on which the building stands.

E.G. MALYAVINA¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.A. GNEZDILOVA¹, Engineer
Yu.N. LEVINA², Research Scientist

¹ National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
² Research Institute of Building Physics of RAACS (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)

1. American Society of Heating, Refrigeration and Air-Conditioning Engineers. Ashrae Handbook: Fundamentals. 2016
2. Duan X., Naterer G.F. Heat Transfer in a tower foundation with ground surface insulation and periodic freezing and thawing. International Journal of Heat and Mass Transfer. 2010. Vol. 53. No. 11–12, pp. 2369–2376.
3. ISO 13330: 2007. Thermal Performance of Buildings—Heat Transfer via The Ground—Calculation Methods / ISO 13330: 2007.
4. Jin M., Liang S. An Improved Land Surface Emissivity Parameter for Land Surface Models Using Global Remote Sensing Observations. Climate. 2006. Vol. 19, pp. 2867–2881.
5. Ashe B.M. Otoplenie i ventilyatsiya [Heating and Ventilation]. Mocsow-Leningrad: Gosstroyizdat. 1939. 614 p.
6. Vlasov O.E. Osnovy stroitel’noi teplotekhniki [Basics of Constructional Heat Technology]. Moscow: VIA. 1938. 94 p.
7. Machinkiy V.D. Teploperedacha v stroitel’stve [Heat Transfer in Construction]. Mocsow: Gosstroyizdat. 1939. 343 p.
8. Kulzhinskiy Yu.I. Opredelenie teplopoter’ cherez ograzhdayushchie konstruktsii podzemnykh sooruzhenii [Calculation of Heat Loss through Enclosing Structures of Underground Construstions]. Moscow: VIA. 1960. 64 p.
9. Dyachek P.I., Makarevich S.A., Livanskiy D.G. Ground Temperature Array Formation Close to Buildings and Constructions. Plumbing, Heating, Air-Conditioning, Energy Conservation. 2016. No. 11, pp. 60–65. (In Russian).
10. Okunev A.Yu., Sotnikov A.Yu, Levin E.V. Methods for Calculation of Heat Losses through Foundations of Buildings and Structures. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2016. No. 6, pp. 25–28. (In Russian).
11. Sotnikov A.G. Thermophysical Calculation of Heat Loss of Underground Parts of Buildings. AVOK. 2010. No. 8, pp. 62–67. (In Russian).
12. Samarin O.D. Substantion of the Simplified Method of Determining Heat Losses throught Underground Parts of Building Enclosures. Vestnik MGSU. 2016. No. 1, pp. 118–125. (In Russian).
13. Malyavina E.G., Ivanov D.S Definition of Heat Loss for Underground Part of a Building by Calculation of Three-Dimensional Soil Temperature Pattern. Vestnik MGSU. 2011. No. 7, pp. 209—215. (In Russian).
14. Malyavina E.G., Gnezdilova E.A., Levina U.N. Heat Loss Calulation through Slab-On-Ground Floors in Buildings with Modern Methods of Thermal Protection. BST. 2019, No. 6. (In print). (In Russian).
15. Gagarin V.G., Malyavina E.G., Ivanov D.S. Development of Climate Data as a Specific “Reference Year”. Vestnik VolgGASU. 2013. No. 31 (50),. Vol. 1: Russian Cities, pp. 343–349. (In Russian).
16. Malyavina E.G., Ivanov D.S Development of the Design Reference Year for Calculation of Heat Loss through Underground Part of Buildings. Trudy Glavnoi geofizicheskoi observatorii imeni A.I. Voeikova. 2014. No. 571, pp. 182—191. (In Russian).