Design of Natural Ventilation System to Ensure Standard Air Consumption

E. G. Malyavina, K. M. Agakhanova

Аннотация


Total losses of aerodynamic pressure in an exhaust ventilation system have been determined in two ways: by calculation of the air regime of the building as a whole, together with the ventilation systems serving the building, and the aerodynamic calculation of a system isolated from the building. The calculation of the building air mode has been carried out by the iterative method of solving the system of equations of air balances of all premises of the building and units of all ventilation systems. Ventilation systems that provide standard air consumption for all systems on all floors of the building have been subject to an analysis. The found relations between aerodynamic resistances of the floor branch of such an exhaust ventilation system from the exhaust grate to the common trunk and the trunk itself from the floor branch to the mouth of the exhaust shaft allowed us to assert that an increase in the air rate to the upper normative permissible air boundaries is possible, since despite the increased aerodynamic resistance in the trunk of the system, pressure losses in the floor branches of the upper floors are reduced due to ejection. The article provides an analysis of the natural ventilation system with the external air inflow through the swing-flap window and the supply valves. The calculations have shown the feasibility of using a supply opening, the aerodynamic resistance of which is close to zero in the calculated external ventilation conditions. In addition, the supply device must be adjustable, so that when the outside air temperature lowers and, consequently, the available pressure of the ventilation system increases, its cross-section may be reduced to avoid an unnecessarily big flow of the supply air. An example of such a supply device can be a swivel-flap window with adjustable opening. Aerodynamic calculations of natural ventilation systems, which are isolated from the building, may be provided only at an almost zero inflow aerodynamic resistance to the sufficient air flow in the ventilation design external conditions.

Полный текст:

PDF

Литература


Malakhov M. A., Savenkov A. E. Opit proektirovaniya estestvenno-mehanicheskoi ventilyacii v jilih zdaniyah s teplimi cherdakami [Experience of designing natural-mechanical ventilation in residential buildings with warm attics]. AVOK: ventilation, heating, air conditioning, heat supply, and building thermal physics, 2008, vol. 6, pp. 20–32. (In Russ.).

Livchak V. I. Reshenie po ventilyacii mnogoetajnih jilih zdanii [Decision on ventilation of multi-storey residential buildings]. AVOK: ventilation, heating, air conditioning, heat supply, and building thermal physics, 1999, vol. 6, pp. 24–31. (In Russ.).

Tertychnik E. I. Ventilyaciya [Ventilation]. Moscow, DIA Publ., 2015. 608 p. (In Russ.).

R NP “AVOK” 5.2–2012. Tehnicheskie rekomendacii po organizacii vozduhoobmena v kvartirah jilih zdanii [Technical recommendations on the organization of air exchange in apartments of residential buildings]. Moscow, AVOK-PRESS, 2016. 23 p. (In Russ.).

Datsyuk T. A., Ivlev Yu. P. Energoeffektivnie resheniya v ventilyacionnoi praktike na baze matematicheskogo modelirovaniya [Energy-Efficient solutions in ventilation practice on the basis of mathematical modeling]. Proceedings: Theoretical foun dations of heat and gas supply and ventilation. Moscow, 2009, pp. 193–196. (In Russ.).

Prokhorenko A. P., Sizenko O. A. Estestvennaya ventilyaciya zdanii s teplim cherdakom. [Natural ventilation of buildings with a warm attic]. Plumbing, heating, air conditioning, 2011, vol. 12 (120), pp. 82–83. (In Russ.).

Razumov N. N. Opredeleniya vozduhoobmenov v zdaniyah grafoanaliticheskim metodom [Determination of air exchange in buildings sources]. Water supply and sanitary engineering, 1963, vol. 12, pp. 5–12. (In Russ.).

Baturin V. V., Elterman V. M. Aeraciya promishlennih zdanii [Aeration of industrial buildings]. Moscow, Gosstroiizdat Publ., 1963. 320 p. (In Russ.).

Konstantinova V. E. Vozdushno-teplovoi rejim v jilih zdaniyah povishennoi etajnosti [Air-heat regime in high-rise residential buildings]. Moscow, Stroizdat Publ., 1969. 135 p. (In Russ.).

Kitaytseva E. H. Algoritm resheniya zadachi o vozdushnom rejime mnogoetajnih zdanii [Algorithm for solving the problem of air regime of multi-storey buildings]. Proceedings: Problems of mathematics and applied geometry in construction. Moscow, 1982, vol. 172, pp. 5–9. (In Russ.).

Romanovskaya I. L. Issledovanie vozdushnogo rejima pomeschenii s kondicionirovaniem vozduha [Study of the air regime of rooms with air conditioning]. Water supply and sanitary engineering, 1982, vol. 10, pp. 13–14. (In Russ.).

Konstantinova V. E. Raschet vozduhoobmena v zdaniyah metodom gidravlicheskoi analogii [Calculation of air interchange in buildings by the method of hydraulic analogies]. Water supply and sanitary engineering, 1961, vol. 11, pp. 46–49. (In Russ.).

Svetlov K. S. Raschet vozduhoobmena v mnogoetajnih zdaniyah s ispolzovaniem elektronno-vichislitelnih mashin [Calculation of air exchange in multi-storey buildings using electronic computers]. Water supply and sanitary engineering, 1966, vol. 11, pp. 28–31. (In Russ.).

Titov V. P. Metodika analiticheskogo rascheta neorganizovannogo vozduhoobmena v zdaniyah [Method of analytical calculation of unorganized air exchange in buildings]. Proceedings: energy Saving in heating, ventilation and air conditioning systems. Moscow, 1985, pp. 130–141. (In Russ.).

Voropaev V. N., Kitaytseva E. H. Matematicheskoe modelirovanie zadach vnutrennei aerodinamiki i teploobmena zdanii [Mathematical simulation of the internal aerodynamics and heat transfer of buildings]. Moscow, SGA Publ., 2008. 337 p. (In Russ.).

Malyavina E. G., Kitaytseva E. H. Estestvennaya ventilyaciya jilih zdanii [Natural ventilation of residential buildings]. AVOK: ventilation, heating, air conditioning, heat supply, and building thermal physics, 1999, vol. 3, pp. 35–43. (In Russ.).

Emmerich S. J., Dols W. S. Loop DA: A natural ventilation system design and analysis tool. Proceedings of the 8th Conference of International Building Performance Simulation Association. Eindhoven, 2003, pp. 291–298.

Etheridge D. W. Natural Ventilation of Buildings: Theory, Measurement and Design. Chichester, John Wiley & Sons, 2012. 428 p.

Klauss A. K., Janssen J. E., Tull R. H., Roots L. M., Pfafflin J. R. History of Changing Concepts of Ventilation Requirements. ASHRAE Journal, 1970, vol. 12 (6), pp. 47–52.

Litiu A. Ventilation system types in some EU countries. REHVA Journal, 2012, vol. 1 (49), pp. 18–23.

Jamaludin A. A., Hussein H., Ariffin A. R. M., Keumala N. A study on different natural ventilation approaches at a residential college building with the internal courtyard arrangement. Energy and Building, 2014, vol. 72, pp. 340–352.

Yao J. The application of natural ventilation of residential architecture in the integrated design. IOP Conf. Series: Earth and Environmental Science, 2017, vol. 61, no. 012139.

Allocca C., Chen Q., Glicksman L. R. Design analysis of single-sided natural ventilation. Energy and Buildings, 2003, vol. 35, pp. 785–795.

Standart AVOK. Zdaniya jilie i obschestvennie. Normi vozduhoobmena [AVOK standard. Residential and public buildings. Norms of air exchange]. Moscow, AVOK-PRESS, 2017. 16 p. (In Russ.).

Agakhanova K. M. Calculation of air regime of a residential building with individual exhaust channels. IOP Conference Series: Materials Science and Engineering, 2018, vol. 365, no. 022036.

Malyavina E. G., Agakhanova K. M. Computational Study of a Natural Exhaust Ventilation System During the Heating Period. Advances in Intelligent Systems and Computing, 2019, vol. 1, pp. 116–124.

Malyavina E. G., Agakhanova K. M. Influence of the Inlet Size on the Natural Ventilation System Operation in a Residential Multi-storey Building. IOP Conference Series: Materials Science and Engineering, 2018, vol. 661, no. 012130.


Ссылки

  • На текущий момент ссылки отсутствуют.