Investigation of optimum external wall insulation thickness of a house two different climate regions

Yıl 2022, Cilt: 7 Sayı: 1, 49 - 65, 27.06.2022

Sarah Kazancı , Ahmet Samancı

Öz

In this study, a residential single-family house with an area of 100 m2 was modeled utilizing the Design Builder program in order to calculate the optimum insulation thickness of the external wall including 20% window-to-wall ratio (WWR) for two different climate zones Kirkuk, Iraq city as drying hot which showed heating degree day (HDD) and cooling degree day (CDD) rate between (730) and (1700) degrees. Between (2507) and (178) degrees of the year, the heating degree day (HDD) and cooling degree day (CDD) rate were indicated espectively for the Konya, Turkey city as cold climate zone. The results obtained in the cost analysis of the (XPS , EPS, rock wool and glass wool) insulation materials, furthermore, electric was chosen for Kirkuk hot seasons as a energy source as well as selecting natural gas as energy source for Konya cooling seasons and commercially available materials of the two countries were taken into account. The results showed that, the best exterior wall insulation thickness was determined to be Xopt = 7 cm and Xopt = 19 cm, respectively. At Xopt = 9 cm, the greatest rate of XPS for Kirkuk city was roughly 6.7 percent. Xopt = 7 cm and Xopt = 15 cm findings were achieved as a result of the insulation applied to the building components for Konya. Following that, the energy savings were calculated, and an XPS of 8.3 percent was obtained at Xopt = 11 cm. As a consequence, XPS material was determined to be appropriate for two climatic zones. To sum up, XPS material was determined to be ideal for Kirkuk, which has a hot climate, and Konya, which has a cool environment.

Anahtar Kelimeler

Optimal insulation thickness, Payback period, Insulation materal, Energy saving, Design Builder program

Kaynakça

• [1] Pérez-Lombard, L., Ortiz, J., Pout, C. “A review on buildings energy consumption information”, Energy and Buildings 2008: 40(3); 394–398. DOI: 10.1016/j.enbuild.2007.03.007.
• [2] EU 244/2012 Commission Delegated Regulation No244/2012 of 16. Supplementing directive 2010/31/EU of the European Parliament and of the Council on the energy performance of buildings by establishing a comparative methodology framework for calculating cost-optimal levels of minimum energy performance requirements for buildings and building elements. January 2012.
• [3] Kazancı, S., Samancı, A. “Overview a nearly zero energy building”, International journal of energy applications and technologies 2021: 8(3); 154–168. https://doi.org/10.31593/ijeat.927678
• [4] Jelle, B. P., Kalnæs, S. E., Gao, T. “Low-emissivity materials for building applications: a state-of-the-art review and future research perspectives”, Energy and Buildings 2015: 96; 329–356. doi:10.1016/j.enbuild.2015.03.024.
• [5] Akan, A. E. “Determination and modeling of optimum insulation thickness for thermal insulation of buildings in all city centers of Turkey”, International Journal of Thermophysics 2021: 42(4); https://doi.org/10.1007/s10765-021-02799-9.
• [6] Aktemur, C., Atikol, U. “Optimum insulation thickness for the exterior walls of buildings in turkey based on different materials, Energy Sources and Climate Regions”, International Journal of Engineering Technologies IJET 2017: 3(2); 72–82. https://doi.org/10.19072/ijet.307239.
• [7] Mahdi, M. S., Khadom, A. A. “Study the economical and optimum thermal insulation thickness of building walls for energy saving in Iraq”, Diyala Journal of Engineering Sciences 2015: 1999–8716.
• [8] Akpınar, E. K., Demir, İ. H. “Calculation of optimum insulation thickness and energy savings for different climatic regions of Turkey”, Fırat University Turkish Journal of Science and Technology 2018: 13(2); 15–22.
• [9] Aynur, Ucar, F. B. “Effect of fuel type on the optimum thickness of selected insulation materials for the four different climatic regions of Turkey”, Applied Energy 2009: 86; 730–736.
• [10] Benallel, A., Tilioua, A., Mellaikhafi, A., Hamdi, M. A. A. “Thickness optimization of exterior wall insulation for different climatic regions in Morocco”, Materials Today: Proceedings 2022: 58 (4); 1541-1548. https://doi.org/10.1016/j.matpr.2022.03.324.
• [11] Fertelli, A. “Determination of optimum insulation thickness for different building walls in turkey”, Transactions of Famena 2013: 37(2); 103–113.
• [12] Yıldırım, H. Y. “Nearly zero energy building design and comparison”, Gazi University Graduate School of Natural and Applied Sciences 2019.
• [13] Özer, N., Özgünler, S. A. “Yapılarda yaygın kullanılan ısı yalıtım malzemelerinin performans özelliklerinin duvar kesitleri üzerinde değerlendirilmesi”, Uludağ Üniversitesi Mühendislik Fakültesi Dergisi 2019: 24(2); 25-48. DOI: 10.17482/uumfd.438738.
• [14] Ahmed, M. M., Khaleed, O. L., Ibraheem, N. T. “Calculation of daily cooling degree for selected stations in Iraq”, Diyala Journal for Pure Science 2018: 14(4); 26–39. DOI:10.24237/djps.1404.440C.
• [15] Mahdi, M. S., Khadom, A. A. “Study the economical and optimum thermal insulation thickness of building walls for energy saving in Iraq. Diyala Journal of Engineering Sciences 2015: 1999–8716.