Proposition of Regression Equations to Determine Outdoor Thermal Comfort in Tropical and Humid Environment

Sangkertadi Sangkertadi, Reny Syafriny


This study is about field experimentation in order to construct regression equations of perception of thermalcomfort for outdoor activities under hot and humid environment. Relationships between thermal-comfort perceptions, micro climate variables (temperatures and humidity) and body parameters (activity, clothing, body measure) have been observed and analyzed. 180 adults, men, and women participated as samples/respondents. This study is limited for situation where wind velocity is about 1 m/s, which touch the body of the respondents/samples. From questionnaires and field measurements, three regression equations have been developed, each for activity of normal walking, brisk walking, and sitting.


tropical humid; outdoor; comfort; urban; pedestrian

Full Text:



P. O. Fanger, Thermal Comfort, New York : McGraw-Hill, 1972.

S. J. Lee and J. Hidler, “Biomechanics of overground vs. treadmill walking in healthy individuals”, Journal of Applied Physiology, vol. 104, 2008.

A. Matzarakis, H. Mayer, and F. Rutz, “Radiation and Thermal Comfort”, in Proceeding of 6th Hellenic Conference in Meteorology, Climatology and Atmospheric Physics, 2003.

M. Nikolopoulou, S. Lykoudis, and M. Kikira, “Thermal comfort in urban spaces: field studies in Greece”, in Proceedings of the fifth International Conference on Urban Climate, Lodz,Poland, September 2008.

T. P. Lin, A. Matzarakis, and J. J. Huang, “Thermal Comfort and Passive Design of Bus Shelters”, in Proceeding of 23th PLEA, 2007

G. Scudo and V. Dessi, “Thermal Comfort in Urban Space Renewal”, in Proceeding 23th PLEA, 2006.

J. J. Spagnolo and R. De Dear, “A field study of thermal comfort in outdoor and semi-outdoor environments in subtropical Sydney Australia”, Building and Environment, volume 38, issue 5, May 2003.

B. Givoni, Climate Considerations in Building and Urban Design, John Wiley & Sons, New York, 1998.

H. Mayer and P. Hoppe, “Thermal comfort of men in different Urban Environments”, Theor. Appl. Climatology, vol. 38, 1987.

L. M. Monteiro and M. P. Alucci, “An Outdoor Thermal Comfort Index for the Subtropics”, in Proceeding 26th PLEA, 2009.

E. Arens and D. Ballanti, “Outdoor Comfort of Pedestrians in Cities”, in Proceedings of The Conference on Physical Environment, Upper Derby, PA, US, 1997.

V. Cheng and E. Ng, “Wind for Comfort in High Density Cities”, in Proceeding of 24th PLEA, 2008.

A. Ashjaran, A. Rashidi, and A, R. Ghazi-Saeidi, “Investigation on Some Ergonomics and Psychological Strains of Common Militarism Protective Clothing”, World Academy of Science, Engineering and Technology, vol. 77, 2011

T. Fukazawa and G. Havenith, European Journal of Applied Physiology, vol. 106, no 1 2009.

J. Vanhelst, G. Zunquin, D. Theunynck, J. Mikulovic, G. BuiXuan, and L. Beghin, “Equivalence of accelerometer data for walking and running: Treadmill versus on land”, Journal of Sports Sciences, vol. 27, Issue 7, 2009.

J. Huang, “Prediction of air temperature for thermal comfort of people in outdoor environments”. International Journal on Biometeorology, vol. 51, no. 375, 2007.



  • There are currently no refbacks.

Creative Commons License

IPTEK Journal of Science and Technology by Lembaga Penelitian dan Pengabdian kepada Masyarakat, ITS is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at