Enhancing Energy Efficiency in Hot Climates via Wall and Roof Insulation Techniques

Authors

DOI:

https://doi.org/10.24086/cuesj.v9n2y2025.pp18-25

Keywords:

Energy Efficient, Insulation Techniques, Hot Climates, Thermal Insulation

Abstract

In last two decades, energy consumption worldwide has increased by more than 30%. The limited thermal conductivity of thermal insulation materials is currently receiving significant attention in hot-weather countries where temperatures reach high levels. This leads to a significant decrease in the demand for energy in HVAC systems and reduces the negative effects on the environment. The purpose of current study is to define the optimum construction techniques for buildings to enable energy savings while occupying minimal space. This research dedicated on the role of wall and roof materials in the energy efficiency of a building by exploring different options, including variations in materials and construction methods. The study employed mathematical calculations to determine the U-value of wall and roof insulating materials. The results indicated that cavity walls with insulation material and cavity roofs with an air gap and insulation material are optimal solutions for improving energy efficiency in buildings. This study recommended considering long-term energy savings to substantiate the effectiveness of these materials in conserving energy for buildings.

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Author Biographies

Saya J. Rashid, Department of Architecture, College of Engineering, Salahaddin University, Erbil,44002, Iraq

Saya Jamal Rashid is an academic and researcher and working as a lecturer in the Department of Architecture at Salahaddin University-Erbil. Her research interests are Theory of Architecture, Vernacular Architecture , Interior Design, Steel Structure. sustainability ,Islamic Architecture.

Faten R. Yaseen, Department of Architecture, College of Engineering, Salahaddin University, Erbil- Kurdistan Region – Iraq

Faten R. Yaseen is a lecturer at the Department of Architecture, College of Engineering, Salahaddin University, Erbil- Kurdistan Region – Iraq. Her research interests are sustainability, biophilic design, environment, technology, innovation, Islamic architecture. 

References

[1] D. Mazzeo, G. Oliveti, and N. Arcuri, “Definition of a new set of parameters for the dynamic thermal characterization of PCM layers in the presence of one or more liquid-solid interfaces,” Energy Build, 2017, https://doi:10.1016/j.enbuild.2017.02.027 DOI: https://doi.org/10.1016/j.enbuild.2017.02.027

[2] KRG Ministry of planning and UNDP, “Building the Kurdistan Region of Building the Kurdistan Region of Iraq,” Empowered lives. Resilient nations, 2012.

[3] R. A. Kudhaer, M. M. Salman, and H. K. Jarallah, “Review of the Use of Sustainable Materials in the Production of Building Units,” Journal of Engineering and Sustainable Development, vol. 28, no. 4, pp. 550–560, Jul. 2024, https://doi:10.31272/jeasd.28.4.14 DOI: https://doi.org/10.31272/jeasd.28.4.14

[4] F. Kuznik and J. Virgone, “Experimental assessment of a phase change material for wall building use To cite this version : Experimental Assessment of a Phase Change Material for Wall Building Use,” Applied Energy ,Elsevier, vol. 86, no. 10, pp. 2038–2046, 2014, doi:10.1016/j.apenergy.2009.01.004 DOI: https://doi.org/10.1016/j.apenergy.2009.01.004

[5] I. Abdulrahman, “Energy Efficient Buildings in a Hot and Dry Climate: Improvement of Traditional Houses in Kurdistan Region,” 2014, https://api.semanticscholar.org/CorpusID:128043658

[6] N. Ghabra, L. Rodrigues, and P. Oldfield, “The impact of the building envelope on the energy efficiency of residential tall buildings in Saudi Arabia,” International Journal of Low-Carbon Technologies, vol. 12, no. 4, pp. 411–419, 2017, https://doi:10.1093/ijlct/ctx005 DOI: https://doi.org/10.1093/ijlct/ctx005

[7] Q. Al-Yasiri and M. Szabó, “Building envelope-combined phase change material and thermal insulation for energy-effective buildings during harsh summer: Simulation-based analysis,” Energy for Sustainable Development, vol. 72, no. January, pp. 326–339, 2023, https://doi:10.1016/j.esd.2023.01.003 DOI: https://doi.org/10.1016/j.esd.2023.01.003

[8] X. Luo, D. Xu, Y. Bing, Y. He, and Q. Chen, “Thermal Performance and Building Energy Simulation of Precast Insulation Walls in Two Climate Zones,” Buildings, vol. 14, no. 9, p. 2612, 2024, https://doi:10.3390/buildings14092612 DOI: https://doi.org/10.3390/buildings14092612

[9] J. Donnelly, Energy efficiency in traditional buildings. Dublin: published by stationary office, 2010, https://www.yumpu.com/en/document/view/36967728/energy-efficiency-in-traditional-buildings-dublin-city-council

[10] M. S. Al-Homoud, “Performance characteristics and practical applications of common building thermal insulation materials,” Build Environ, vol. 40, no. 3, pp. 353–366, 2005, https://doi:10.1016/j.buildenv.2004.05.013 DOI: https://doi.org/10.1016/j.buildenv.2004.05.013

[11] R. Pacheco, J. Ordóñez, and G. Martínez, “Energy efficient design of building: A review,” Renewable and Sustainable Energy Reviews, vol. 16, no. 6, pp. 3559–3573, 2012, https://doi:10.1016/j.rser.2012.03.045 DOI: https://doi.org/10.1016/j.rser.2012.03.045

[12] S. A. Al-Sanea, M. F. Zedan, S. A. Al-Ajlan, and A. S. Abdul Hadi, “Heat Transfer Characteristics and Optimum Insulation Thickness for Cavity Walls,” Journal of Thermal Envelope and Building Science, vol. 26, no. 3, pp. 285–307, 2003, https://doi:10.1177/109719603027973 DOI: https://doi.org/10.1177/109719603027973

[13] P. Parthasarathy and S. K. Narayanan, “Effect of Hydrothermal Carbonization Reaction Parameters on,” Environ Prog Sustain Energy, vol. 33, no. 3, pp. 676–680, 2014, https://doi:10.1002/ep DOI: https://doi.org/10.1002/ep.11974

[14] F. G. N. Li et al., “Solid-wall U -values: Heat flux measurements compared with standard assumptions,” Building Research and Information, vol. 43, no. 2, pp. 238–252, 2015, https://doi:10.1080/09613218.2014.967977 DOI: https://doi.org/10.1080/09613218.2014.967977

[15] Moraekip Eslam, “Energy Efficiency Optimization in Residential Buildings Using Thermal Insulation Blocks Case Study in Cairo, Egypt,” JES. Journal of Engineering Sciences, vol. 51, no. 3, pp. 0–0, Feb. 2023, https://doi:10.21608/jesaun.2023.183679.1193 DOI: https://doi.org/10.21608/jesaun.2023.183679.1193

[16] R. Vakilinezhad and S. Khabir, “Energy optimization for Façade retrofit design of residential buildings in hot climates using advanced materials,” Energy Build, vol. 317, no. June, p. 114417, 2024, https://doi:10.1016/j.enbuild.2024.114417 DOI: https://doi.org/10.1016/j.enbuild.2024.114417

[17] H. Kaddouri, A. Abidouche, M. S. H. Alaoui, I. Driouch, and S. Hamdaoui, “Impact of Insulation using Bio-sourced Materials on the Thermal and Energy Performance of a Typical Residential Building in Morocco,” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 117, no. 1, pp. 43–59, 2024, https://doi:10.37934/arfmts.117.1.4359 DOI: https://doi.org/10.37934/arfmts.117.1.4359

[18] C. Baglivo, P. Congedo, M. Di Cataldo, L. Coluccia, and D. D’Agostino, “Envelope Design Optimization by Thermal Modelling of a Building in a Warm Climate,” Energies (Basel), vol. 10, no. 11, p. 1808, 2017, https://doi:10.3390/en10111808 DOI: https://doi.org/10.3390/en10111808

[19] J. Kośny, PCM-Enhanced Building Components. 2015, https://doi:10.1007/978-3-319-14286-9 DOI: https://doi.org/10.1007/978-3-319-14286-9

[20] J. Kosny, D. W. Yarbrough, and W. a Miller, “Use of PCM Enhanced Insulation in the Building Envelope,” Journal of Building Enclosure Design, vol. 2008, Sep. 2008.

[21] S. A. Al-Sanea and M. F. Zedan, “Optimum insulation thickness for building walls in a hot-dry climate,” International Journal of Ambient Energy, vol. 23, no. 3, pp. 115–126, 2002, https://doi:10.1080/01430750.2002.9674880 DOI: https://doi.org/10.1080/01430750.2002.9674880

[22] S. A. A. Zedan, M F, “Heat transfer characteristics and optimum insulation thickness for Hordi roofs using a pseudo,” International Journal of Ambient Energy ISSN:, vol. 0750, no. November, 2011, https://doi:10.1080/01430750.2006.9675007 DOI: https://doi.org/10.1080/01430750.2006.9675007

[23] Ashrae Standard, “ASHRAE Handbook 2001 Fundamentals,” in Ashrae Standard, vol. 53, no. 9, 2001, pp. 1689–1699, https://doi:10.1017/CBO9781107415324.004 DOI: https://doi.org/10.1017/CBO9781107415324.004

[24] U.S. DOE, “Increasing Efficiency of Building Systems and Technologies September 2015,” in Chapter 5, no. September, 2015, pp. 1–505.

[25] S. B. Sadineni, S. Madala, and R. F. Boehm, “Passive building energy savings : A review of building envelope components,” Renewable and Sustainable Energy Reviews, vol. 15, no. 8, pp. 3617–3631, 2011, https://doi:10.1016/j.rser.2011.07.014 DOI: https://doi.org/10.1016/j.rser.2011.07.014

[26] A. kanaan and A. ramazan, “Sustainable Passenger Terminals in Airport Buildings Passenger Terminals in Baghdad International Airport-case study,” Journal of Engineering and Sustainable Development, vol. 24, no. 5, p. Ar-12-Ar-33, Sep. 2020, https://doi:10.31272/jeasd.24.5.8 DOI: https://doi.org/10.31272/jeasd.24.5.8

Published

2025-07-15

How to Cite

1.
Rashid SJ, Yaseen FR. Enhancing Energy Efficiency in Hot Climates via Wall and Roof Insulation Techniques. Cihan U Erbil SCI J [Internet]. 2025 Jul. 15 [cited 2026 Jun. 23];9(2):18-25. Available from: https://journals.cihanuniversity.edu.iq/index.php/cuesj/article/view/1356

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Research Article

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