- HEAT SUPPLY, VENTILATION, AIR CONDITIONING, LIGHTING
- Influence of Air Permeability of External Enclosures on Energy-Saving Operation of Buildings
- UDC 697:699.86.022.3
Andrey I. YURCHENKO, å-mail: yurchenko.andrey1997@gmail.com
Tatyana V. SCHUKINA, å-mail: schukina.niki@yandex.ru
Voronezh State Technical University, ul. 20 let Oktyabya, 84, Voronezh 394006, Russian Federation
Lubov' V. KUZNETSOVA, å-mail: vittorea@yandex.ru
Agrotorg, ul. Kosmonavtov, 84, Voronezh 394006, Russian Federation
Abstract. The feasibility of regular inspection of external enclosures for detecting defects and their subsequent elimination when conducting repairing works aimed at the further implementation of energy saving operation of buildings is substantiated. The natural aging of building materials is often accompanied by an increase in air permeability which must be considered when determining thermal protection properties of external enclosures. The obtained solution of the thermal conductivity equation with due regard for the infiltration influence for multilayer building structures makes it possible to evaluate the consequences of its growth during the lengthy operation, without timely repairs. As calculations show, the penetration of cold air in external enclosures due to the formation of micro-cracks and voids with increasing the age of buildings affects negatively the thermal regime of the premises. As a result, the low temperature on the inner surface of building structures does not meet sanitary-hygienic requirements. The prognosis of reduction of thermal protective properties affords ground to recommend an additional increase in the thickness of the applied insulation as an energy saving solution. The payback of over-expenditure of materials for reducing the infiltration of outside air through building constructions is not more than two years.
Key words: energy saving, building envelope, air permeability, reducing thermal protection properties. - REFERENCES
1. Gagarin V. G., Kozlov V. V., Tsykanovskii E. Iu. Thermal protection of facades with ventilated air gap. AVOK, 2004, no. 2, 3, pp. 20-26. (In Russian).
2. Gagarin V. G., Kozlov V. V., Sadchikov A. V., Mekhnetsov I. A. Thermal protection of facades with ventilated air gap. AVOK, 2005, no. 8, pp. 60-70. (In Russian).
3. Gagarin V. G., Kozlov V. V., Nekliudov A. Iu. Accounting of heat-conducting inclusions at determination of thermal loading on heating systems. BST, 2016, no. 2, pp. 57-61. (In Russian).
4. Gagarin V. G., Neklyudov A. Yu. The use of matrix method for determining a ventilation component of thermal load on the heating system of the building. Promyshlennoe i grazhdanskoe stroitel'stvo, 2014, no. 7, pp. 21-25. (In Russian).
5. Bogoslovskii V. N. Stroitelnaia teplofizika (teplofizicheskie osnovy otopleniia, ventiliatsii i konditsionirovaniia vozdukha) [Building Thermophysics (thermo-physical fundamentals of heating, ventilation and air-conditioning)]. Moscow, Kniga po trebovaniiu Publ., 2013. 416 p. (In Russian).
6. Perekhozhentsev A. G. Teoreticheskie osnovy i metody rascheta temperaturno-vlazhnostnogo rezhima ograzhdaiushchikh konstruktsii zdanii [Theoretical bases and methods of calculation of temperature and humidity conditions of building envelopes]. Volgograd, VolgGASA Publ., 2008. 78 p. (In Russian).
7. Khinkanin L. A., Khinkanin A. P. The influence of the thermal heterogeneity on the energy efficiency of the walling. Sovremennye problemy nauki i obrazovaniia, 2015, no. 2, pp. 11-17. (In Russian).
8. Sheps R. A., Shchukina T. V. Thermal protection properties of protections taking into account the predicted operating conditions. Zhilishchnoe stroitelstvo, 2015, no. 7, pp. 29-31. (In Russian).
9. Kuznetsova L. V. On the issue of complex protection of building structures. Vestnik MGSU, 2011, no. 7, pp. 181-186. (In Russian).
10. Sherif Goubran, Dahai Qi, Wael F. Saleh, Liangzhu (Leon) Wang. Comparing methods of modeling air infiltration through building entrances and their impact on building energy simulations. Energy and Buildings, 2017, vol. 138, pp. 579-590.
11. Air leakage characteristics, test methods and specifications for large buildings. CMHC Technical Series 1-800-668-2642.
12. Anis W. A. The effect of air permeability on design of air-conditioning systems. ASHRAE, 2003, no. 2, pp. 13-21.
13. Kuznetsova L. V. Thermal mode of insulation of fences under extreme conditions of high temperature exposure. Izvestiia vuzov. Stroitelstvo, 2013, no. 2-3, pp. 103-107. (In Russian).
14. Fokin K. F. Stroitelnaia teplotekhnika ograzhdaiushchikh chastei zdanii [Building heat engineering of enclosing parts of buildings]. Moscow, AVOK-PRESS Publ., 2006. 256 p. (In Russian). - For citation: Yurchenko A. I., Schukina T. V., Kuznetsova L. V. Influence of Air Permeability of External Enclosures on Energy-Saving Operation of Buildings. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2018, no. 5, pp. 79-83. (In Russian).
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