Impact of Energy-Consuming Air Conditioning Systems on People's Thermal Comfort and Preferences: Comparative Study of Iraq and Gulf Cooperation Council Countries

Authors

  • Omar Al-Hafith

    School of Art, Design and Architecture, University of Plymouth, Plymouth, PL4 8AA, UK

  • Satish B.K.

    Welsh School of Architecture, Cardiff University, Cardiff, CF10 3AT, UK

  • Pieter de Wilde

    Department of Architecture, University of Strathclyde, Glasgow, G1 1XQ, UK;

    Division of Energy and Building Design, Lund University, SE-221 00, Lund, Sweden

  • Sepideh Korsavi

    Department of Architecture, The Pennsylvania State University, 16802, USA

DOI:

https://doi.org/10.30564/jaeser.v7i1.6220

Abstract

This study investigates the impact of the intense usage of air-conditioning systems on the thermal comfort requirements of building occupants. It compares the thermal comfort requirements of building occupants in Iraq and Gulf Cooperation Council (GCC) countries. Iraqis have limited usage of air-conditioning units, whilst people in GCC countries intensely operate these systems. Research work underpinning this article involved undertaking a year-long thermal comfort survey in Iraq, and an intensive analysis of thermal comfort studies conducted in GCC countries. Results show that, in Iraq, people experience a 2–50 °C annual indoor temperature range, and their annual comfort range is 14–35 °C. In GCC countries, due to the intense usage of air-conditioning systems, the widest recorded annual indoor temperature range is 17.2–31.0 °C, and the widest annual comfort range is 20.0–27.8 °C. These results demonstrate the significant impact of air-conditioning systems on narrowing the thermal comfort limits of building occupants leading to high energy consumption. This study presents a novel comparison between two cases highlighting the impact of air-conditioning systems on the thermal comfort requirements of building occupants. The results of this study can be used to inform the development of thermal comfort standards that better consider people’s adaptation capabilities to help reduce energy consumption for heating and cooling purposes.

Keywords:

Thermal comfort, Iraq, GCC countries, Energy savings, HVAC systems

References

[1] Kawakubo, S., Sugiuchi, M., Arata, S., 2023. Office thermal environment that maximizes workers’ thermal comfort and productivity. Building and Environment. 233, 110092.DOI: https://doi.org/10.1016/j.buildenv.2023.110092

[2] Clair, A., Baker, E., 2022. Cold homes and mental health harm: Evidence from the UK Household Longitudinal Study. Social Science & Medicine. 314, 115461.DOI: https://doi.org/10.1016/j.socscimed.2022.115461

[3] Homod, R.Z., Almusaed, A., Almssad, A., et al., 2021. Effect of different building envelope materials on thermal comfort and air-conditioning energy savings: A case study in Basra city, Iraq. Journal of Energy Storage. 34, 101975.DOI: https://doi.org/10.1016/j.est.2020.101975

[4] Dowson, M., Poole, A., Harrison, D., et al., 2012. Domestic UK retrofit challenge: Barriers, incentives and current performance leading into the Green Deal. Energy Policy. 50, 294–305.DOI: https://doi.org/10.1016/j.enpol.2012.07.019

[5] Yang, L., Yan, H., Lam, J.C., 2014. Thermal comfort and building energy consumption implications—a review. Applied Energy. 115, 164–173.DOI: https://doi.org/10.1016/j.apenergy.2013.10.062

[6] Elaiab, F.M., 2014. Thermal comfort investigation of multi-storey residential buildings in Mediterranean climate with reference to Darnah, Libya [Ph.D. thesis]. Nottingham: University of Nottingham.

[7] González-Torres, M., Pérez-Lombard, L., Coronel, J.F., et al., 2022. A review on buildings energy information: Trends, end-uses, fuels and drivers. Energy Reports. 8, 626–637.DOI: https://doi.org/10.1016/j.egyr.2021.11.280

[8] Elnaklah, R., Alnuaimi, A., Alotaibi, B.S., et al., 2021. Thermal comfort standards in the Middle East: Current and future challenges. Building and Environment. 200, 107899. DOI: https://doi.org/10.1016/j.buildenv.2021.107899

[9] Indraganti, M., Boussaa, D., 2018. An adaptive relationship of thermal comfort for the Gulf Cooperation Council (GCC) Countries: The case of offices in Qatar. Energy and Buildings. 159, 201–212.DOI: https://doi.org/10.1016/j.enbuild.2017.10.087

[10] Satola, D., Wiberg, A.H., Singh, M., et al., 2022. Comparative review of international approaches to net-zero buildings: Knowledge-sharing initiative to develop design strategies for greenhouse gas emissions reduction. Energy for Sustainable Development. 71, 291–306.DOI: https://doi.org/10.1016/j.esd.2022.10.005

[11] Wuni, I.Y., Shen, G.Q., Osei-Kyei, R., 2019. Scientometric review of global research trends on green buildings in construction journals from 1992 to 2018. Energy and Buildings. 190, 69–85.DOI: https://doi.org/10.1016/j.enbuild.2019.02.010

[12] Satish, B.K., Brennan, J., 2019. Understanding the energy use behaviour of British Indian households to shape optimised sustainable housing strategies in existing housing stock. Sustainable Cities and Society. 48, 101542.DOI: https://doi.org/10.1016/j.scs.2019.101542

[13] Chen, S., Zhang, G., Xia, X., et al., 2021. The impacts of occupant behavior on building energy consumption: A review. Sustainable Energy Technologies and Assessments. 45, 101212.DOI: https://doi.org/10.1016/j.seta.2021.101212

[14] Jian, Y., Liu, J., Pei, Z., et al., 2022. Occupants’ tolerance of thermal discomfort before turning on air conditioning in summer and the effects of age and gender. Journal of Building Engineering. 50, 104099.DOI: https://doi.org/10.1016/j.jobe.2022.104099

[15] International Energy Agency, 2018. The future of cooling: Opportunities for energy-efficient air conditioning. International Energy Agency: Paris.DOI: https://doi.org/10.1787/9789264301993-en

[16] Taib, N.S.M., Zaki, S.A., Rijal, H.B., et al., 2022. Associating thermal comfort and preference in Malaysian universities’ air-conditioned office rooms under various set-point temperatures. Journal of Building Engineering. 54, 104575.DOI: https://doi.org/10.1016/j.jobe.2022.104575

[17] Fukawa, Y., Murakami, R., Ichinose, M., 2021. Field study on occupants’ subjective symptoms attributed to overcooled environments in air-conditioned offices in hot and humid climates of Asia. Building and Environment. 195, 107741.DOI: https://doi.org/10.1016/j.buildenv.2021.107741

[18] Al-ajmi, F.F., Loveday, D.L., 2010. Indoor thermal conditions and thermal comfort in air-conditioned domestic buildings in the dry-desert climate of Kuwait. Building and Environment. 45(3), 704–710.DOI: https://doi.org/10.1016/j.buildenv.2009.08.018

[19] Fabbri, K., 2015. Indoor thermal comfort perception. A Questionnaire approach focusing on children. Springer: New York. DOI: https://doi.org/10.1007/978-3-319-18651-1

[20] Nicol, J.F., Roaf, S., 2017. Rethinking thermal comfort. Building Research & Information. 45(7), 711–716.DOI: https://doi.org/10.1080/09613218.2017.1301698

[21] Reveshti, A.M., Ebrahimpour, A., Razmara, J., 2023. Investigating the effect of new and old weather data on the energy consumption of buildings affected by global warming in different climates. International Journal of Thermofluids. 19, 100377.DOI: https://doi.org/10.1016/j.ijft.2023.100377

[22] Ramon, D., Allacker, K., De Troyer, F., et al., 2020. Future heating and cooling degree days for Belgium under a high-end climate change scenario. Energy and Buildings. 216, 109935.DOI: https://doi.org/10.1016/j.enbuild.2020.109935

[23] Guarino, F., Tumminia, G., Longo, S., et al., 2022. An integrated building energy simulation early—Design tool for future heating and cooling demand assessment. Energy Reports. 8, 10881–10894.DOI: https://doi.org/10.1016/j.egyr.2022.08.224

[24] Rashid, S., Kornadt, O., Voelker, C. (editors), 2018. Defining thermal comfort in desert (hot-arid) climates: A thermal comfort field survey in Baghdad, Iraq. 10th Windsor Conference: Rethinking Comfort; 2018 Apr 12–15; London.

[25] Almansour, M., Krarti, M., 2022. Value engineering optimal design approach of high-performance residential buildings: Case study of Kuwait. Energy and Buildings. 258, 111833.DOI: https://doi.org/10.1016/j.enbuild.2022.111833

[26] Almasri, R.A., Alshitawi, M.S., 2022. Electricity consumption indicators and energy efficiency in residential buildings in GCC countries: Extensive review. Energy and Buildings. 255, 111664.DOI: https://doi.org/10.1016/j.enbuild.2021.111664

[27] Iraqi Electricity Sector Overview [Internet]. Available from: https://kapita.iq/storage/app/media/Research/Iraqi%20Electricity%20sector%20overview%20final%20March.pdf

[28] Mahdi, A.H., Aljubury, I.M.A., 2021. Experimental investigation of two-stage evaporative cooler powered by photovoltaic panels using underground water. Journal of Building Engineering. 44, 102679.DOI: https://doi.org/10.1016/j.jobe.2021.102679

[29] Al-juboori, O.A., 2015. Conditions for Applying Public Private Partnership (PPP) in Iraq infrastructure projects successfully [Ph.D. thesis]. Munchen: Technische Universitat Munchen.

[30] Al-Khatri, H., Alwetaishi, M., Gadi, M.B., 2020. Exploring thermal comfort experience and adaptive opportunities of female and male high school students. Journal of Building Engineering. 31, 101365.DOI: https://doi.org/10.1016/j.jobe.2020.101365

[31] Buda, R., Elsayed-Elkhouly, S.M., 1998. Cultural differences between Arabs and Americans: Individualism-collectivism revisited. Journal of Cross-cultural Psychology. 29(3), 487–492.DOI: https://doi.org/10.1177/0022022198293006

[32] Aljawabra, F., Nikolopoulou, M. (editors), 2009. Outdoor thermal comfort in the hot arid climate: The effect of socio-economic background and cultural differences. 26th International Conference on Passive and Low Energy Architecture; 2009 Jun 22–24; Quebec.

[33] Nicol, F., Humphreys, M., Roaf, S., 2012. Adaptive thermal comfort: Principles and practice. Routledge: London.

[34] De Dear, R.J., Brager, G.S., 2002. Thermal comfort in naturally ventilated buildings: revisions to ASHRAE Standard 55. Energy and Buildings. 34(6), 549–561.DOI: https://doi.org/10.1016/S0378-7788(02)00005-1

[35] Webb, C.G., 1964. Thermal discomfort in a tropical environment. Nature. 202, 1193–1194. DOI: https://doi.org/10.1038/2021193a0

[36] Farghal, A., Wagner, A. (editors), 2010. Studying the adaptive comfort model a case study in a hot dry climate, Cairo, Egypt. Proceedings of Conference, Adapting to Change: New Thinking on Comfort; 2010 Apr 9–11; Windsor.

[37] Eltrapolsi, A., 2016. The efficient strategy of passive cooling design in desert housing: A case study in Ghadames, Libya [Ph.D. thesis]. Sheffield: University of Sheffield.

[38] Indraganti, M., Ooka, R., Rijal, H.B., et al., 2014. Adaptive model of thermal comfort for offices in hot and humid climates of India. Building and Environment. 74, 39–53. DOI: https://doi.org/10.1016/j.buildenv.2014.01.002

[39] Thyer, B.A., 2010. The handbook of social work research methods. Sage Publications, Inc.: Thousand Oaks, CA.DOI: https://doi.org/10.4135/9781544364902

[40] Fink, A., 2006. How to conduct surveys: A step-by-step guide. Sage Publications, Inc.: Thousand Oaks, CA.

[41] Song, G., 2011. Improving comfort in clothing. Elsevier: Amsterdam.

[42] Toe, D.H.C., Kubotam T. (editors), 2011. A review of thermal comfort criteria for naturally ventilated buildings in hot-humid climate with reference to the adaptive model. Conference Proceedings of the 27th International Conference on Passive and Low Energy Architecture; 2011 Jul 13-15; Louvain-la-Neuve.

[43] Rijal, H.B., Humphreys, M.A., Nicol, J.F., 2017. Towards an adaptive model for thermal comfort in Japanese offices. Building Research & Information. 45, 717–729. DOI: https://doi.org/10.1080/09613218.2017.1288450

[44] Humphreys, M., Nicol, F., Roaf, S., 2015. Adaptive thermal comfort: Foundations and analysis. Routledge: London. DOI: https://doi.org/10.4324/9781315765815

[45] Dhaka, S., Mathur, J., Wagner, A., et al., 2013. Evaluation of thermal environmental conditions and thermal perception at naturally ventilated hostels of undergraduate students in composite climate. Building and Environment. 66, 42–53.DOI: https://doi.org/10.1016/j.buildenv.2013.04.015

[46] Kumar, P., Sharma, A., 2022. Assessing the outdoor thermal comfort conditions of exercising people in the semi-arid region of India. Sustainable Cities and Society. 76, 103366.DOI: https://doi.org/10.1016/j.scs.2021.103366

[47] Manu, S., Brager, G., Rawal, R., et al., 2019. Performance evaluation of climate responsive buildings in India-Case studies from cooling dominated climate zones. Building and Environment. 148, 136–156.DOI: https://doi.org/10.1016/j.buildenv.2018.10.063

[48] Indraganti, M., Humphreys, M.A., 2021. A comparative study of gender differences in thermal comfort and environmental satisfaction in air-conditioned offices in Qatar, India, and Japan. Building and Environment. 206, 108297. DOI: https://doi.org/10.1016/j.buildenv.2021.108297

[49] Indraganti, M., Boussaa, D., 2017. Comfort temperature and occupant adaptive behavior in offices in Qatar during summer. Energy and Buildings. 150, 23–36.DOI: https://doi.org/10.1016/j.enbuild.2017.05.063

[50] Google-Scholar [Internet]. Available from: https://scholar.google.com/

[51] Primo [Internet]. Available from: primo.plymouth.ac.uk

[52] ScienceDirect [Internet]. Available from: https://www.sciencedirect.com/

[53] Hennink, M., Kaiser, B.N., 2022. Sample sizes for saturation in qualitative research: A systematic review of empirical tests. Social Science & Medicine. 292, 114523. DOI: https://doi.org/10.1016/j.socscimed.2021.114523

[54] Al-Hafith, O., Satish, B.K., de Wilde, P., 2019. Assessing housing approaches for Iraq: Learning from the world experience. Habitat International. 89, 102001.DOI: https://doi.org/10.1016/j.habitatint.2019.102001

[55] British-Standard-Institution, 2019. BS EN 16798-1: 2019—Energy Performance of Buildings—Ventilation for Buildings—Part 1: Indoor Environmental Input Parameters for Design and Assessment of Energy Performance of Buildings Addressing Indoor Air Quality, Thermal Environment, Lighting and Acoustics—Module M1-6. BSI: London.

[56] Indraganti, M., Kutty, F., Ali, R., et al., 2021. Occupant perception of thermal comfort in sleep environments in Qatar. The Journal of Engineering Research [TJER]. 18(2), 137–145.DOI: https://doi.org/10.53540/tjer.vol18iss2pp137-145

[57] Al-ajmi, F.F., 2020. Thermal Comfort in air-conditioned Campus Buildings in Kuwait. American Journal of Civil Engineering and Architecture. 8(1), 12–18.

[58] Alshaikh, A.M.A., 2016. Design principles for thermally comfortable and low energy homes in the extreme hot-humid climatic Gulf region, with reference to Dammam, Saudi Arabia [Ph.D. thesis]. Edinburgh: Heriot-Watt University.

[59] Indraganti, M., Boussaa, D., 2016. Occupant’s thermal comfort in Qatari offices–Need for the new adaptive standard. QScience Proceedings. 23. DOI: https://doi.org/10.5339/qproc.2016.qgbc.23

[60] Thermal Comfort and Adaptation in Qatari and Japanese Offices: A Comparative Overview [Internet]. Available from: https://doi.org/10.18948/shasetaikai.2016.6.0_1

[61] Al-ajmi, F.F., 2010. Thermal comfort in air-conditioned mosques in the dry desert climate. Building and Environment. 45(11), 2407–2413.DOI: https://doi.org/10.1016/j.buildenv.2010.05.003

[62] AccuWeather [Internet]. Available from: www.accuweather.com

[63] Dubai Building Code [Internet]. Government of Dubai. Available from: https://dm.gov.ae/wp-content/uploads/2021/12/Dubai%20Building%20Code_English_2021%20Edition_compressed.pdf

[64] Bassoud, A., Khelafi, H., Mokhtari, A.M., et al., 2021. Evaluation of summer thermal comfort in arid desert areas. Case study: Old adobe building in Adrar (South of Algeria). Building and Environment. 205, 108140.DOI: https://doi.org/10.1016/j.buildenv.2021.108140

[65] Saudi Building Code Energy Conservation Requirements: 601 [Internet]. SBCNC. Available from: https://fkec.com.sa/website/uploads/Energy_Conservation_Requirements.pdf

[66] Cena, K., De Dear, R., 2001. Thermal comfort and behavioural strategies in office buildings located in a hot-arid climate. Journal of Thermal Biology. 26(4–5), 409–414.DOI: https://doi.org/10.1016/S0306-4565(01)00052-3

[67] Sahebzadeh, S., Dalvand, Z., Sadeghfar, M., et al., 2020. Vernacular architecture of Iran’s hot regions; elements and strategies for a comfortable living environment. Smart and Sustainable Built Environment. 9(4), 573–593. DOI: https://doi.org/10.1108/SASBE-11-2017-0065

[68] Kaoula, D., Rahmani, S., Lemita, I., et al., 2022. Life cycle assessment of traditional Saharan houses: Towards a sustainable building?. Journal of Building Engineering. 57, 104782.DOI: https://doi.org/10.1016/j.jobe.2022.104782

[69] Chandel, S.S., Sharma, V., Marwah, B.M., 2016. Review of energy efficient features in vernacular architecture for improving indoor thermal comfort conditions. Renewable and Sustainable Energy Reviews. 65, 459–477. DOI: https://doi.org/10.1016/j.rser.2016.07.038

[70] Almumar, M.M.S., 2019. Understanding the environmental performance of the Iraqi traditional courtyard house, is there an order of façades orientation in randomly oriented land plots?. Journal of Building Engineering. 22, 140–146.DOI: https://doi.org/10.1016/j.jobe.2018.12.004

[71] Edwards, B., 2006. Courtyard housing: Past, present and future. Taylor & Francis: Abingdon.DOI: https://doi.org/10.4324/9780203646724

[72] Al-Azzawi, S.H.A., 1984. A descriptive, analytical and comparative study of traditional courtyard houses and modern non-courtyard houses in Baghdad: in the context of urban design in the hot-dry climates of the sub-tropics [Ph.D. thesis]. London: University of London.

Downloads

How to Cite

Al-Hafith, O., B.K., S., de Wilde, P., & Korsavi, S. (2024). Impact of Energy-Consuming Air Conditioning Systems on People’s Thermal Comfort and Preferences: Comparative Study of Iraq and Gulf Cooperation Council Countries. Journal of Architectural Environment & Structural Engineering Research, 7(1), 1–19. https://doi.org/10.30564/jaeser.v7i1.6220

Issue

Article Type

Article