Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia
Abstract
:1. Introduction
2. Materials and Methods
2.1. Description of the Study Area
2.2. Methods for Evaluating Indoor Thermal Comfort
2.2.1. Type and Source of Data
2.2.2. Sampling Technique and Sample Size
2.2.3. Temperature and Humidity Data Collection
2.2.4. Questionnaire Survey
2.2.5. Indoor Thermal Comfort Evaluation Model
3. Description of the Case Study
3.1. Characteristics of Traditional Houses
3.2. Characteristics of Condominium Houses
4. Results and Discussion
4.1. Analysis of Thermal Sensation, Preferences, and Satisfaction Level
“…the majority of people who live in old traditional houses are happier with the thermal indoor climate than those who live in new buildings such as condominiums. The main reason for this is that traditional houses have a high internal space elevation without a ceiling and a sand-based floor, resulting in a comfortable thermal indoor climate.”(Key informant interview, 2020)
4.2. Analyses of Indoor Thermal Environments
“---condominium houses are completely unsuitable for Semera city, as they are multistory buildings that make it difficult to construct basket shelters. It’s also too hot, both during the day and at night. Because of the discomfort, the majority of traditional house dwellers do not want to live in condominiums. Some of them want to sell their unit and develop conventional G + 0 housing instead. The condominium denies the behavior of the people. The majority of condominium dwellers spend most of their time at the basket shelters on the ground, at balconies and corridors and others prefer to spend their time at cafeterias away from their homes”.(Key informant interview, 2020)
“…..residents of condominium houses used rooms mainly for storing different materials, while cooking, sleeping, and other tasks are performed in the corridor and balconies outside the room due to the discomfort of the room (Figure 29)”.(Key informant interview, 2020)
4.3. Rationales behind Better Indoor Thermal Comfort in Traditional Houses
4.4. Implications for Designing Thermally Comfortable Residential Buildings in Hot-Arid Climatic Regions of Ethiopia
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
- Arif, M.; Katafygiotou, M.; Mazroei, A.; Kaushik, A.; Elsarrag, E. Impact of indoor environmental quality on occupant well-being and comfort: A review of the literature. Int. J. Sustain. Built Environ. 2016, 5, 1–11. [Google Scholar] [CrossRef]
- Ragheb, A.A.; El-Darwish, I.I.; Ahmed, S. Microclimate and human comfort considerations in planning a historic urban quarter. Int. J. Sustain. Built Environ. 2016, 5, 156–167. [Google Scholar] [CrossRef] [Green Version]
- Samuel, D.L.; Dharmasastha, K.; Nagendra, S.S.; Maiya, M.P. Thermal comfort in traditional buildings composed of local and modern construction materials. Int. J. Sustain. Built Environ. 2017, 6, 463–475. [Google Scholar] [CrossRef]
- Akande, O.K.; Adebamowo, M.A. Indoor thermal comfort for residential buildings in hot-dry climate of Nigeria. In Proceedings of the Conference: Adapting to Change: New Thinking on Comfort, Cumberland Lodge, Windsor, UK, 9–11 April 2010; Volume 911, pp. 133–144. [Google Scholar]
- Ashrae, A. Thermal environmental conditions for human occupancy. In ANSI/ASHRAE Standard 55; American Society of Heating, Refrigerating and Air Conditioning Engineers: Atlanta, GA, USA, 2017. [Google Scholar]
- Toy, S.; Kántor, N. Evaluation of human thermal comfort ranges in urban climate of winter cities on the example of Erzurum city. Environ. Sci. Pollut. Res. 2017, 24, 1811–1820. [Google Scholar] [CrossRef]
- Haruna, A.C.; Muhammad, U.D.; Oraegbune, O.M. Analysis of indoor thermal comfort perception of building occupants in Jimeta, Nigeria. Civ. Environ. Res. 2018, 10, 11–20. [Google Scholar]
- Fanger, P.O. Thermal Comfort—Analysis and Application in Environmental Engineering; Danish Technical Press: Copenhagen, Denmark, 1970. [Google Scholar]
- Ormandy, D.; Ezratty, V. Thermal discomfort and health: Protecting the susceptible from excess cold and excess heat in housing. Adv. Build. Energy Res. 2016, 10, 84–98. [Google Scholar] [CrossRef]
- Havenith, G.; Holmér, I.; Parsons, K. Personal factors in thermal comfort assessment: Clothing properties and metabolic heat production. Energy Build. 2002, 34, 581–591. [Google Scholar] [CrossRef]
- Hamzah, B.; Gou, Z.; Mulyadi, R.; Amin, S. Thermal comfort analyses of secondary school students in the tropics. Buildings 2018, 8, 56. [Google Scholar] [CrossRef] [Green Version]
- Mahar, W.A.; Amer, M.; Attia, S. Indoor thermal comfort assessment of residential building stock in Quetta, Pakistan. In European Network for Housing Research (ENHR) Annual Conference 2018; Uppsala University: Uppsala, Sweden, 2018. [Google Scholar]
- Jindal, A. Thermal comfort study in naturally ventilated school classrooms in composite climate of India. Build. Environ. 2018, 142, 34–46. [Google Scholar] [CrossRef]
- Dear, R.J.D.; Brager, G.S. Thermal comfort in naturally ventilated buildings: Revisions to ASHRAE Standard 55. Energy Build. 2002, 34, 549–561. [Google Scholar] [CrossRef] [Green Version]
- Nicol, F. Adaptive thermal comfort standards in the hot–humid tropics. Energy Build. 2004, 36, 628–637. [Google Scholar] [CrossRef]
- Nicol, J.F.; Humphreys, M.A. Adaptive thermal comfort and sustainable thermal standards for buildings. Energy Build. 2002, 34, 563–572. [Google Scholar] [CrossRef]
- Fanger, P.O.; Toftum, J. Extension of PMV model to non-air-conditioned buildings in warm climates. Energy Build. 2002, 36, 533–536. [Google Scholar] [CrossRef]
- Ariffin, N.A.M.; Behaz, A.; Denan, Z. Thermal Comfort Studies on Houses in Hot Arid Climates. In IOP Conference Series: Materials Science and Engineering; IOP Publishing: Bristol, UK, 2018; Volume 401, p. 012028. [Google Scholar]
- Abbaszadeh, S.; Zagreus, L.; Lehrer, D.; Huizenga, C. Occupant Satisfaction with Indoor Environmental Quality in Green Buildings. Ph.D. Thesis, UC Berkeley, Berkeley, CA, USA, 2006. [Google Scholar]
- Yadeta, C.; Tucho, G.T.; Tadesse, E.; Alemayehu, E. Human Thermal Comfort and Its Analysis by Computational Fluid Dynamics for Naturally Ventilated Residential Buildings of Jimma Town, South West Ethiopia. Ethiop. J. Educ. Sci. 2019, 15, 102–115. [Google Scholar]
- Dovjak, M.; Shukuya, M.; Krainer, A. Exergetic issues of thermoregulation physiology in different climates. Int. J. Exergy 2015, 17, 412–432. [Google Scholar]
- Djongyang, N.; Tchinda, R.; Njomo, D. Thermal comfort: A review paper. Renew. Sustain. Energy Rev. 2010, 14, 2626–2640. [Google Scholar] [CrossRef]
- Akadiri, P.O. Evaluating the Performance of Bioclimatic Design Building in Nigeria. Civ. Environ. Res. 2016, 8, 60–66. [Google Scholar]
- Khoshbakht, M.; Gou, Z.; Lu, Y.; Xie, X.; Zhang, J. Are green buildings more satisfactory? A review of global evidence. Habitat Int. 2018, 74, 57–65. [Google Scholar] [CrossRef]
- Aigbavboa, C.; Thwala, W.D. Performance of a green building’s indoor environmental quality on building occupants in South Africa. J. Green Build. 2019, 14, 131–148. [Google Scholar] [CrossRef]
- Latha, P.K.; Darshana, Y.; Venugopal, V. Role of building material in thermal comfort in tropical climates—A review. J. Build. Eng. 2015, 3, 104–113. [Google Scholar] [CrossRef]
- Radivojević, A.; Đukanović, L. Material Aspect of Energy Performance and Thermal Comfort in Buildings. Energy Resour. Build. Perform. 2018, 61–86. Available online: https://raf.arh.bg.ac.rs/handle/123456789/824 (accessed on 17 November 2020).
- Pathirana, S.; Rodrigo, A.; Halwatura, R. Effect of building shape, orientation, window to wall ratios and zones on energy efficiency and thermal comfort of naturally ventilated houses in tropical climate. Int. J. Energy Environ. Eng. 2019, 10, 107–120. [Google Scholar] [CrossRef]
- Heerwagen, D. Passive and Active Environmental Controls: Informing the Schematic Designing of Buildings, 1st ed.; McGraw Hill: New York, NY, USA, 2004. [Google Scholar]
- Lauber, W. Tropical Architecture, 1st ed.; Prestel: Munich, Germany, 2005; pp. 42–65. [Google Scholar]
- Simons, B.; Koranteng, C.; Woanyah-Deladem, S. Thermal comfort evaluation of high-rise buildings in Accra, Ghana. Adv. Appl. Sci. Res. 2012, 3, 5002–5507. [Google Scholar]
- Guedes, M.C.; Matias, L.; Santos, C.P. Thermal comfort criteria and building design: Field work in Portugal. Renew. Energy 2009, 34, 2357–2361. [Google Scholar] [CrossRef]
- de Dear, R.J.; Brager, G.S. Developing an adaptive model of thermal comfort and preference. ASHRAE Trans. 1998, 104 Pt 1A, 145–167. [Google Scholar]
- Nielsen, L.S. Building Integrated System Design for Sustainable Heating and Cooling. Rehva J. 2012, 24–27. Available online: https://www.rehva.eu/fileadmin/hvac-dictio/01-2012/02-2012/building-integrated-system-design-for-sustainable-heating-and-cooling.pdf (accessed on 18 February 2021).
- Xu, X.; Wang, S.; Wang, J.; Xiao, F. Active pipe-embedded structures in buildings for utilizing low-grade energy sources: A review. Energy Build. 2010, 42, 1567–1581. [Google Scholar] [CrossRef]
- Manzano-Agugliaro, F.; Montoya, F.G.; Sabio-Ortega, A.; García-Cruz, A. Review of bioclimatic architecture strategies for achieving thermal comfort. Renew. Sustain. Energy Rev. 2015, 49, 736–755. [Google Scholar] [CrossRef]
- Freewan, A.A. Advances in Passive Cooling Design: An Integrated Design Approach. In Zero and Net Zero Energy; Intech Open: London, UK, 2019. [Google Scholar]
- Dili, A.S.; Naseer, M.A.; Varghese, T.Z. Thermal comfort study of Kerala traditional residential buildings based on questionnaire survey among occupants of traditional and modern buildings. Energy Build. 2010, 42, 2139–2150. [Google Scholar] [CrossRef]
- Nematchoua, M.K.; Tchinda, R.; Orosa, J.A. Thermal comfort and energy consumption in modern versus traditional buildings in Cameroon: A questionnaire-based statistical study. Appl. Energy 2014, 114, 687–699. [Google Scholar] [CrossRef]
- Karyono, T.H. Report on thermal comfort and building energy studies in Jarkata, Indonesia. Build. Energy J. 2000, 35, 77–90. [Google Scholar] [CrossRef]
- Fernandes, J.; Pimenta, C.; Mateus, R.; Silva, S.M.; Bragança, L. Contribution of portuguese older building strategies to indoor thermal comfort and occupants’ perception. Buildings 2015, 5, 1242–1264. [Google Scholar] [CrossRef] [Green Version]
- Ali, N.; Taki, A.; Painter, B. Comparative study of traditional and contemporary Islamic dwelling design: The case of Benghazi, Libya. Glob. Dwell. Approach. Sustain. Des. Particip. 2020, 193, 39. [Google Scholar]
- Gutierrez, E.S.; Murtagh, V.; Crété, E. Detailed shelter response profile Ethiopia: Local building cultures for sustainable and resilient habitats. Villefontaine 2018, 60, 2018. [Google Scholar]
- Cena, K.; De Dear, R. Thermal comfort and behavioural strategies in office buildings located in a hot-arid climate. J. Therm. Biol. 2001, 26, 409–414. [Google Scholar] [CrossRef]
- Nicol, J.F. An analysis of some observations of thermal comfort in Roorkee, India and Baghdad, Iraq. Ann. Hum. Biol. 1974, 1, 411–426. [Google Scholar] [CrossRef]
- Humphreys, M.A.; Nicol, J.F. An investigation into thermal comfort of office workers £. lnst. Heat. Vent. Eng. 1970, 38, 181–189. [Google Scholar]
- Mamo, G.; Abebe, F.; Worku, Y.; Hussein, N. Bovine tuberculosis and its associated risk factors in pastoral and agro-pastoral cattle herds of Afar Region, Northeast Ethiopia. J. Vet. Med. Anim. Health 2013, 5, 171–179. [Google Scholar] [CrossRef]
- Kottek, M.; Grieser, J.; Beck, C.; Rudolf, B.; Rubel, F. World Map of the Ko¨ ppen-Geiger climate classification. Meteorol. Z. 2006, 15, 259–263. [Google Scholar] [CrossRef]
- Laskari, M.; Carducci, F.; Isidori, D.; Senzacqua, M.; Standardi, L.; Cristalli, C. Objective and subjective evaluation of thermal comfort in the Loccioni Leaf Lab. Energy Procedia 2017, 134, 645–653. [Google Scholar] [CrossRef]
- Zhao, Q.; Lian, Z.; Lai, D. Thermal Comfort models and their developments: A review. Energy Built Environ. 2020, 2, 21–33. [Google Scholar] [CrossRef]
- Nicol, F.; Humphreys, M.; Roaf, S. Adaptive Thermal Comfort: Principles and Practice; Routledge: London, UK, 2012. [Google Scholar]
- Kish, L. Survey Sampling (No. 04; HN29, K5.); John Wiley & Sons, Inc.: New York, NY, USA, 1965. [Google Scholar]
- Grove, S.K.; Burns, N.; Gray, J.R. The Practice of Nursing Research: Appraisal, Synthesis and Generation of Evidence, 7th ed.; Elsevier Saunders: Amsterdam, The Netherlands, 2013. [Google Scholar]
- Maarof, S.; Jones, P. Thermal Comfort Factors in Hot and Humid Region: Malaysia. 2009. Available online: https://www.irbnet.de/daten/iconda/CIB14241.pdf (accessed on 18 February 2021).
- Humphreys, M.A. Why did the piggy bark? In some effects of language and context on the interpretation of words used in scales of warmth and thermal preference. In Proceedings of the Conference: Air Conditioning and the Low Carbon Cooling Challenge, Cumberland Lodge, Windsor, UK, 27–29 July 2008; pp. 27–29. [Google Scholar]
- Andamon, M.M.; Williamson, T.J.; Soebarto, V.I. Perceptions and expectations of thermal comfort in the Philippines. In Proceedings of the Conference on Comfort and Energy Use in Buildings: Getting Them Right, Windsor, UK, 27–30 April 2006. [Google Scholar]
- Version, D. Challenging the assumptions for thermal sensation scales. Build. Res. Inf. 2016, 45, 572–589. [Google Scholar] [CrossRef] [Green Version]
- Albatayneh, A.; Alterman, D.; Page, A.; Moghtaderi, B. The significance of the orientation on the overall buildings thermal performance-case study in Australia. Energy Procedia 2018, 152, 372–377. [Google Scholar] [CrossRef]
- Alfano, F.R.D.A.; Olesen, B.W.; Palella, B.I. Povl Ole Fanger’s impact ten years later. Energy Build. 2017, 152, 243–249. [Google Scholar] [CrossRef] [Green Version]
- De Vecchi, R.; Sorgato, M.J.; Pacheco, M.; Cândido, C.; Lamberts, R. ASHRAE 55 adaptive model application in hot and humid climates: The Brazilian case. Archit. Sci. Rev. 2015, 58, 93–101. [Google Scholar] [CrossRef]
- Mousli, K.; Semprini, G. Thermal performances of traditional houses in dry hot arid climate and the effect of natural ventilation on thermal comfort: A case study in Damascus. Energy Procedia 2015, 78, 2893–2898. [Google Scholar] [CrossRef] [Green Version]
- Yao, R.; Costanzo, V.; Li, X.; Zhang, Q.; Li, B. The effect of passive measures on thermal comfort and energy conservation. A case study of the hot summer and cold winter climate in the Yangtze River region. J. Build. Eng. 2008, 15, 298–310. [Google Scholar] [CrossRef] [Green Version]
- Ali, H.H.; Al-Hashlamun, R. Assessment of indoor thermal environment in different prototypical school buildings in Jordan. Alex. Eng. J. 2019, 58, 699–711. [Google Scholar] [CrossRef]
- Hashemi, R.L.; Heidari, S. Evaluating adaptive thermal comfort in residential buildings in hot-arid climates Case study: Kerman province. J. Arch. Hot Dry Clim. 2018, 6, 43–65. [Google Scholar] [CrossRef]
- Almusaed, A.; Almssad, A.; Homod, R.Z.; Yitmen, I. Environmental profile on building material passports for hot climates. Sustainability 2020, 12, 3720. [Google Scholar] [CrossRef]
- Akande, O.K. Passive design strategies for residential buildings in a hot dry climate in Nigeria. WIT Trans. Ecol. Environ. 2010, 128, 61–71. [Google Scholar]
- UN-Habitat. Sustainable Building Design for Tropical Climates: Principles and Applications for Eastern Africa [Online]; UN-Habitat: Nairobi, Kenya, 2015. [Google Scholar]
- Fernandes, J.E.P.; Debaieh, M.; Mateus, R.; Silva, S.M.; Bragança, L.; Gervásio, H. Thermal Performance and Comfort of Older Earthen Buildings in Egypt and Portugal; 3rd Restapia, 3rd Versus; CRC Press: Sostierra, Portugal, 2017; pp. 95–100. [Google Scholar]
- Parsons, K. Human Thermal Environments: The Effects of Hot, Moderate, and Cold Environments on Human Health, Comfort, and Performance; CRC Press: Boca Raton, FL, USA, 2014. [Google Scholar]
- Singh, M.K.; Mahapatra, S.; Atreya, S.K. Thermal performance study and evaluation of comfort temperatures in older buildings of North-East India. Build. Environ. 2010, 45, 320–329. [Google Scholar] [CrossRef]
- Shaeri, J.; Yaghoubi, M.; Aflaki, A.; Habibi, A. Evaluation of thermal comfort in traditional houses in a tropical climate. Buildings 2018, 8, 126. [Google Scholar] [CrossRef] [Green Version]
- Sghiouri, H.; Charai, M.; Mezrhab, A.; Karkri, M. Comparison of passive cooling techniques in reducing overheating of the clay-straw building in semi-arid climate. Build. Simul. 2020, 13, 65–88. [Google Scholar] [CrossRef]
- Prakash, D.; Ravikumar, P. Analysis of Thermal Comfort and Indoor Air Flow Characteristics for a Residential Building Room under Generalized Window Opening Position at the Adjacent Walls. Int. J. Sustain. Built Environ. 2015, 4, 42–57. [Google Scholar] [CrossRef] [Green Version]
- Deng, X.; Paul, C.; Zhenjun, M.; Georgios, K. Numerical Analysis of Indoor Thermal Comfort in a Cross-Ventilated Space with Top-Hung Windows. Energy Procedia 2017, 121, 222–229. [Google Scholar] [CrossRef]
- Tan, Z.; Xiang, D. Assessment of Natural Ventilation Potential for Residential Buildings across Different Climate Zones in Australia. Atmosphere 2017, 8, 177. [Google Scholar] [CrossRef] [Green Version]
- Dincyurek, O.; Mallick, F.H.; Numan, I. Cultural and environmental values in the arcaded Mesaorian houses of Cyprus. Build. Environ. 2003, 38, 1463–1473. [Google Scholar] [CrossRef]
- Folaranmi, A.O.; Philip, A.; Stephen, O.; Amina, B. Bioclimatic Design Principle a Solution to Thermal Discomfort in Minna Residences, Niger State Nigeria. J. Environ. Earth Sci. 2013, 3, 45–51. [Google Scholar]
- Boukhris, Y.; Gharbi, L.; Ghrab-Morcos, N. Influence of night natural ventilation on Tunisian summer thermal comfort. In Proceedings of the 2014 5th International Renewable Energy Congress (IREC), Hammamet, Tunisia, 25–27 March 2014; pp. 1–5. [Google Scholar]
- Omrani, S.; Garcia-Hansen, V.; Capra, B.R.; Drogemuller, R. Effect of natural ventilation mode on thermal comfort and ventilation performance: Full-scale measurement. Energy Build. 2017, 156, 1–16. [Google Scholar] [CrossRef] [Green Version]
- Coutts, A.M.; White, E.C.; Tapper, N.J.; Beringer, J.; Livesley, S.J. Temperature and human thermal comfort effects of street trees across three contrasting street canyon environments. Theor. Appl. Climatol. 2016, 124, 55–68. [Google Scholar] [CrossRef]
- Nasir, R.A.; Ahmad, S.S.; Zain-Ahmed, A.; Ibrahim, N. The Role of Tree Shades for Adaptive Thermal Comfort. Asian J. Behav. Stud. 2018, 3, 179–189. [Google Scholar] [CrossRef]
- Huang, C.; Zou, Z.; Li, M.; Wang, X.; Li, W.; Huang, W.; Xiao, X. Measurements of indoor thermal environment and energy analysis in a large space building in typical seasons. Build. Environ. 2007, 42, 1869–1877. [Google Scholar] [CrossRef]
- Guimaraes, R.P.; Carvalho, M.C.R.; Santos, F.A. The influence of ceiling height in thermal comfort of buildings: A case study in belo horizonte, Brazil. Int. J. Hous. Sci. 2013, 37, 75–86. [Google Scholar]
- Wong, N.H.; Li, S. A Study of the Effectiveness of Passive Climate Control in Naturally Ventilated Residential Buildings in Singapore. Build. Environ. 2007, 42, 1395–1405. [Google Scholar] [CrossRef]
- Taleb, H.M. Using passive cooling strategies to improve thermal performance and reduce energy consumption of residential buildings in UAE buildings. Front. Archit. Res. 2014, 3, 154–165. [Google Scholar] [CrossRef] [Green Version]
- Yao, M.; Zhao, B. Window opening behaviour of occupants in residential buildings in Beijing. Build. Environ. 2017, 124, 441–449. [Google Scholar] [CrossRef]
- Mochida, A.; Yoshino, H.; Takeda, T.; Kakegawa, T.; Miyauchi, S. Methods for controlling airflow in and around a building under cross-ventilation to improve indoor thermal comfort. J. Wind Eng. Ind. Aerodyn. 2005, 93, 437–449. [Google Scholar] [CrossRef]
- Hernández, S. Eco-Architecture III: Harmonisation Between Architecture and Nature; WIT Press: Southampton, UK, 2010; Volume 128. [Google Scholar]
- Wong, N.K.; Huang, B. Comparative Study of the Indoor Air Quality of Naturally Ventilated and Air-Conditioned Bedrooms of Residential Buildings in Singapore. Build. Environ. 2004, 39, 1115–1123. [Google Scholar] [CrossRef]
- Hamdani, M.; Bekkouche, S.M.A.; Benouaz, T.; Cherier, M.K. Study of Natural Ventilation through Openings on Buildings under Saharan Climatic Conditions. Int. J. Appl. Environ. Sci. 2018, 13, 39–57. [Google Scholar]
- Utama, A.; Gheewala, S. Influence of material selection on energy demand in residential houses. Mater. Des. 2009, 30, 2173–2180. [Google Scholar] [CrossRef]
- Gezer, N.A. The effects of construction materials on thermal comfort in residential buildings: An analysis using Ecotect 5.0. Ph.D. Thesis, METU, Ankara, Çankaya, 2003. [Google Scholar]
- Soflaei, F.; Shokouhian, M.; Mofidi Shemirani, S. Traditional Iranian courtyards as microclimate modifiers by considering orientation, dimensions, and proportions. Front. Archit. Res. 2016, 5, 225–238. [Google Scholar] [CrossRef] [Green Version]
- Raeissi, S.; Taheri, M. Energy Saving by Proper Tree Plantation. Build. Environ. 1999, 34, 565–570. [Google Scholar] [CrossRef]
Digital infrared thermometer | Digital hygrometer |
Infrared thermometer color screen display | Humidity range: 10~99% RH |
Range: −50400 °C (−58 °F~752 °F) | Resolution humidity 1% RH |
Accuracy: 1.5 °C/1.5% | Accuracy humidity 5% RH (40–80%) |
Resolution: 0.1 °C/0.1 °F | Storage condition 20–80% RH |
Distance spot ratio: 12 | Auto power off and data hold |
Emissivity: 0.95 (fixed) | Humidity range: 10–99% RH |
°C/°F unit selectable | Laser ON/OFF selectable |
Thermal sensation scale | ||||||
Cold | Cool | Slightly cool | Neutral | Slightly Warm | Warm | Hot |
−3.0 | −2.0 | −1.0 | 0.0 | 1.0 | 2.0 | 3.0 |
Thermal preference scale | ||||||
Much cooler | Cooler | Slightly cool | No change | Slightly Warmer | Warmer | Much warmer |
−3.0 | −2.0 | −1.0 | 0.0 | 1.0 | 2.0 | 3.0 |
Satisfaction scale | ||||||
Very dissatisfied | Dissatisfied | Slightly dissatisfied | Neutral | Slightly satisfied | Satisfied | Very satisfied |
−3.0 | −2.0 | −1.0 | 0.0 | 1.0 | 2.0 | 3.0 |
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Hailu, H.; Gelan, E.; Girma, Y. Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia. Urban Sci. 2021, 5, 53. https://doi.org/10.3390/urbansci5030053
Hailu H, Gelan E, Girma Y. Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia. Urban Science. 2021; 5(3):53. https://doi.org/10.3390/urbansci5030053
Chicago/Turabian StyleHailu, Haven, Eshetu Gelan, and Yared Girma. 2021. "Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia" Urban Science 5, no. 3: 53. https://doi.org/10.3390/urbansci5030053
APA StyleHailu, H., Gelan, E., & Girma, Y. (2021). Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia. Urban Science, 5(3), 53. https://doi.org/10.3390/urbansci5030053