Outdoor Thermal Comfort Improvement of Campus Public Space
Keywords:outdoor public space, thermal comfort, physical equivalent temperature, design alternative
This study focuses on the design of a campus public space, located within the Faculty of Engineering, Chiang Mai University, Thailand. This area faces extreme temperatures, creating uncomfortable outdoor thermal conditions and hindering activities that are expected to support the learning and social cohesion needs of students. To create the best conditions in this space, three design alternatives such as adding a pond, large trees, or shrubs were considered, and the Physiologically Equivalent Temperature (PET) was used to calculate the outdoor thermal comfort index for each alternative. The alternatives were then compared to the base case. The PET can be calculated using the ENVI-met simulation software following the appropriate field data collection and calibration process. The results showed that adding large trees in the south-west area is the best design alternative. The PET for this alternative was 3.17 % lower than the base case. In addition, this design workflow is an effective working model for further outdoor public space designs to meet the constraints of effective sustainable development in any tropical campus area.
“CMU Smart City Information,” https://enis.cmu.ac.th/audit_analytic/dashboard.php, May 28, 2019.
Z. Huang, B. Cheng, Z. Gou, and F. Zhang, “Outdoor Thermal Comfort and Adaptive Behaviors in a University Campus in China's Hot Summer-Cold Winter Climate Region,” Building and Environment, vol. 165, pp. 1-11, November 2019.
L. Zhao, X. Zhou, L. Li, S. He, and R. Chen, “Study on Outdoor Thermal Comfort on a Campus in a Subtropical Urban Area in Summer,” Sustainable Cities and Society, vol. 22, pp. 164-170, February 2016.
F. Aram, E. Solgi, E. H. Garcia, and A. Mosavi, “Urban Heat Resilience at the Time of Global Warming: Evaluating the Impact of the Urban Parks on Outdoor Thermal Comfort,” Environmental Sciences Europe, vol. 32, pp. 1-15, September 2020.
C. M. Peccolo, “The Effect of Thermal Environment on Learning,” Department of Health, Education and Welfare Office of Education, University of IOWA, Technical Report, 1962.
P. Höppe, “The Physiological Equivalent Temperature – A Universal Index for the Biometeorological Assessment of the Thermal Environment,” International Journal of Biometeorology, vol. 43, no.2, pp. 71-75, October 1999.
Z. Fang, X. Feng, J. Liu, Z. Lin, C. M. Mak, J. Niu et al., “Investigation into the Differences Among Several Outdoor Thermal Comfort Indices Against Field Survey in Subtropics,” Sustainable Cities and Society, vol. 44, pp. 676-690, January 2019.
F. Aram, E. Solgi, S. Baghaee, E. Higueras García, A. Mosavi, and S. S. Band, “How Parks Provide Thermal Comfort Perception in the Metropolitan Cores; A Case Study in Madrid Mediterranean Climatic Zone,” Climate Risk Management, vol. 30, pp. 1-14, January 2020.
M. Srivanit and K. Hokao, “Evaluating the Cooling Effects of Greening for Improving the Outdoor Thermal Environment at an Institutional Campus in the Summer,” Building and Environment, vol. 66, pp. 158-172, August 2013.
K. Blazejczyk, Y. Epstein, G. Jendritzky, H. Staiger, and B. Tinz, “Comparison of UTCI to Selected Thermal Indices,” International Journal of Biometeorology, vol. 56, no. 3, pp. 515-535, May 2012.
E. Johansson, “Influence of Urban Geometry on Outdoor Thermal Comfort in a Hot Dry Climate: A Study in Fez, Morocco,” Building and Environment, vol. 41, no. 10, pp. 1326-1338, October 2006.
J. Klaylee, “The Assessment of Physical Design for Outdoor Thermal Comfort: Case Study of Thammasat University (Rangsit Center) (in Thai),” Bachelor, Urban Planning, Thammasat University, Patumthani, http://library.ap.tu.ac.th/searching.php, 2015.
A. Matzarakis, H. Mayer, and M. G. Iziomon, “Applications of a Universal Thermal Index: Physiological Equivalent Temperature,” International Journal of Biometeorology, vol. 43, no. 2, pp. 76-84, October 1999.
M. Srivanit and S. Auttarat, “Thermal Comfort Conditions of Urban Spaces in a Hot-Humid Climate of Chiang Mai City, Thailand,” The 9th International Conference on Urban Climate, July 2015.
A. Auliciems and S. V. Szokolay, Thermal Comfort, Brisbane: PLEA in Association with Department of Architecture, University of Queensland, 1997.
J. Waewsak, C. Chancham, M. Mani, and Y. Gagnon, “Estimation of Monthly Mean Daily Global Solar Radiation Over Bangkok, Thailand using Artificial Neural Networks,” Energy Procedia, vol. 57, pp. 1160-1168, 2014.
P. Nimnuan and S. Janjai, “An Approach for Estimating Average Daily Global Solar Radiation from Cloud Cover in Thailand,” Procedia Engineering, vol. 32, pp. 399-406, 2012.
P. Vangtook and S. Chirarattananon, “An Experimental Investigation of Application of Radiant Cooling in Hot Humid Climate,” Energy and Buildings, vol. 38, no. 4, pp. 273-285, April 2006.
A. Panrare, P. Sohsalam, and T. Tondee, “Constructed Wetland for Sewage Treatment and Thermal Transfer Reduction,” Energy Procedia, vol. 79, pp. 567-575, November 2015.
M. Srivanit and K. Hokao, “Effects of Urban Development and Spatial Characteristics on Urban Thermal Environment in Chiang Mai Metropolitan, Thailand,” Lowland Technology International, vol. 14, no. 2, pp. 9-22, December 2012.
P. Suropan, D. Rinchumphu, and M. Srivanit, “The Study of Eco-efficiency from Outdoor Thermal Impacts for Hi-end Condominium Project in Central Business District of Bangkok (in Thai),” The National Conference on “Vernacular Creativity Wisdom”, Faculty of Architecture, Chiang Mai University, January 2017, pp. 57-64.
Thai Green Building Institute, Thai’s Rating of Energy and Environmental Sustainability for New Construction and Major Renovation, 1st ed. Bangkok: Thai Green Building Institute, 2012.
F. Salata, I. Golasi, R. de Lieto Vollaro, and A. de Lieto Vollaro, “Urban Microclimate and Outdoor Thermal Comfort: A Proper Procedure to Fit ENVI-Met Simulation Outputs to Experimental Data,” Sustainable Cities and Society, vol. 26, pp. 318-343, October 2016.
E. Gatto, R. Buccolieri, E. Aarrevaara, F. Ippolito, R. Emmanuel, L. Perronace, and J. L. Santiago, “Impact of Urban Vegetation on Outdoor Thermal Comfort: Comparison between a Mediterranean City (Lecce, Italy) and a Northern European City (Lahti, Finland),” Forests, vol. 11, no. 2, pp. 1-22, February 2020.
P. K. Cheung and C. Y. Jim, “Comparing the Cooling Effects of a Tree and a Concrete Shelter using PET and UTCI,” Building and Environment, vol. 130, pp. 49-61, December 2017.
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