Energy Efficiency of “Green Structures†in Cooling Period

  • Authors

    • Tkachenko Tetiana
    • . .
    2018-06-20
    https://doi.org/10.14419/ijet.v7i3.2.14570
  • CO2 emission, cooling effect, energy efficiency, greenstructures, green structure.

  • Abstract

    The proposed methodology for estimating the reduction of CO2 emissions by green constructions (green roof and facade greening) due to the “cooling effect†during the cooling period allows to calculate CO2 savings in warm periods of the year. For Kyiv, in July, the reduction of CO2 emissions per m2 at coal using is 133 g / m2, during the warm period of the year – 515 g / m2; using gas – 78 g / m2 and 303 g / m2. It is established that the energy savings of a green roof depends on the thickness of the thermal insulation of buildings: the thicker insulation causes the less green roof contribution to energy savings. However, the significance of their effectiveness remains. Green roofs can be especially effective in switching from gas to local solid fuels: peat waste, pellets, etc. As a practical recommendation, it is proposed to coordinate the placement of greened and ungreen parts of the green roof with rooms under the roof, which allows to reduce the refrigeration load on air conditioning. In addition, recommendations on grass care on the green roof have been developed. To maximize the cooling effect, it is necessary to maintain grass height no more than120 mm. Before the beginning of the transition period, it is necessary to stop mowing the grass, which reduces the cooling effect.

     

     

  • References

    1. [1] â€Can greenery make commercial buildings more green?â€, FiBRE: Findings in Built and Rural Environments, (2007), available online: http://www.bco.org.uk/Research/Publications/Cangreene2599.aspx, last visit:08.03.2018

      [2] Gaffin S.R., Rosenzweig C., Parshall L., Beattie D., Berghage R., O’Keeffe G., Braman D. “Energy Balance Modeling Applied to a Comparison of Green and White Roof Cooling Efficiencyâ€, Proceedings of the 3rd Annual Greening Rooftops for Sustainable Cities Conference; Washington, DC., U.S.A. May 4–6, (2005), pp:3-18.

      [3] Wong N. H., Chena Yu., Ong C. L., Sia A., “Investigation of thermal benefits of rooftop garden in the tropical environmentâ€, Building and Environment, Vol.38 No.2, (2003), pp:261–270, http://doi.org/10.1016/S0360-1323(02)00066-5

      [4] Liu K Minor J. (2005). “Performance evaluation of an extensive green roofâ€. Proceedings of Third Annual Greening Rooftops for Sustainable Communities Conference, Awards and Trade Show; May, 4–6 Washington, DC, (2005), pp:1-11, available online: https://nparc.nrc-cnrc.gc.ca/eng/view/object/?id=e10a2c46-5c45-4a9e-8625-d7b0ea46e847, last visit:08.03.2018

      [5] Minke G. “13 Fragen a Professor Gernot Minke†Dach + Grün, No 3, (2014), pp:6-10.

      [6] Rakotondramiarana H. T., Ranaivoarisoa Т. F., Morau D., “Dynamic Simulation of the Green Roofs Impact on Building Energy Performance, Case Study of Antananarivo, Madagascarâ€, Buildings, No.5, (2007), pp:497-520, doi:10.3390/buildings5020497

      [7] Tkachenko T., Mileikovskyi V. (2017). “Research of Cooling Effect of Vegetation Layer of Green Structures in Constructionâ€, International Scientific and Practical Conference “World Scienceâ€, Vol. 1, No.7(23), (2017), pp.22-24, available online: https://elibrary.ru/item.asp?id=29744613, last visit:08.03.2018

      [8] Kabrhel M., Jirsák M., Bittner M., Kabele K., Zachoval D. (2007), “Exterior Climate and Building Ventilationâ€, Proceedings of Clima

      WellBeing Indoors (2007), available online: http://www.irbnet.de/daten/iconda/CIB7729.pdf, last visit:08.03.2018

      [9] Gumen O, Dovhaliuk V., Mileikovskyi V., Lebedeva O., Dziubenko V., “Geometric Analysis of Turbulent Macrostructure in Jets Laid on Flat Surfaces for Turbulence Intensity Calculationâ€, FME Transactions, Vol.45, No.2, (2017), pp: 236-242, doi:10.5937/fmet1702236G

      [10] Gumen O., Dovhaliuk V., Mileikovskyi V. (2016) “Simplified Simulation of Flows with Turbulent Macrostructureâ€, The 4th International Technical Conference on Hydraulic Engineering (CHE 2016). 16-17 July 2016, Hong Kong. Proceedings, (2016), pp:251-260.

      [11] Dovhaliuk V., Gumen O, Mileikovskyi V., Dziubenko V. (2018), Simplified Analysis of Turbulence Intensity in Curvilinear Wall Jets. FME Transactions, Vol.46, No.2, pp:177-182, doi:10.5937/fmet1802177D

      [12] Belousov V. N., Smorodin S. N., Lakomkin V. Yu. Energosberezgenie i vibrosy parnikovich gazov (CO2), SPbGTURP, (2014), 53 p, available online: http://docplayer.ru/26668716-Energosberezhenie-i-vybrosy-parnikovyh-gazov-so-2.html, last visit:08.03.2018

      [13] Malavina E. G. Stroitelnay teplophizika, MGSU, (2011), 22 p., available online: http://allformgsu.ru/load/teplogazosnabzhenie_i_ventiljacija_tgv/stroitelnaja_teplofizika_maljavina_e_g/35-1-0-905, last visit:08.03.2018

      [14] DBN Ð’.2.6-31:2016 Teplova izoljacia budivel, Ukrarkhbudinform, (2017), 30 p., available online: http://dbn.at.ua/_ld/0/13_DBN-V.2.6-31-20.pdf, last visit:08.03.2018

      [15] DSTU N B V.1.1 – 27:2010 Budivelna klimatologiia, Ukrarkhbudinform, (2011), 123 p, available online: http://dbn.at.ua/load/normativy/dstu/dstu_b_v_1_1_27_2010/5-1-0-929, last visit:08.03.2018

      [16] Мокliak V. F., Riabchuk O. M. Теplonasosni ustanovky v kharchovii ta inchich galuzach, UNIDO, (2015), 33 p., available online: http://www.reee.org.ua/download/trainings/%D0%A2%D0%9C_12.pdf

  • Downloads

  • How to Cite

    Tetiana, T., & ., . (2018). Energy Efficiency of “Green Structures” in Cooling Period. International Journal of Engineering & Technology, 7(3.2), 453-457. https://doi.org/10.14419/ijet.v7i3.2.14570

    Received date: 2018-06-23

    Accepted date: 2018-06-23

    Published date: 2018-06-20