Fig. 2. Study site drawing (Left of building No. 9)
Fig. 3. Study site : Building No. 9 painting with different colors of Kyungpook National University – Sangju Campus –
Fig. 4. 4th floor of building No. 9 for temperature measurement
Fig. 5. Rooftop surface average temperature acquired by UAV-based thermal infrared camera according to weekly different time (℃)
Fig. 6. Indoor average temperature acquired by the thermometer of the air-conditioning sensor according to weekly different time (℃)
Fig. 7. Indoor average temperature acquired by a thermometer according to the weekly different time (℃)
Fig. 8. Overall average surface and indoor temperature by colors (℃)
Fig. 9. Difference between white and other colors on surface temperature
Fig. 10. Difference between white and other colors on Indoor temperature (Air conditioning thermometer)
Fig. 11. Difference between white and other colors on Indoor temperature (Digital thermometer)
Table 1. Specifications of UAV and thermal infrared camera
Table 3. Rooftop surface temperature images acquired by UAV-based thermal infrared camera according to weekly different time
Table 2. Specifications of air conditioning thermometer and digital thermometer
References
- Ahn, J.S., Hwang, J.D., Park, M.H., and Suh, Y.S. (2012), Estimation of urban heat island potential based on land cover type in Busan using Landsat-7 ETM+ and AWS data, Journal of the Korean Association of Geographic Information Studies, Vol. 15, No. 4, pp. 65-77. (in Korean with English abstract) https://doi.org/10.11108/kagis.2012.15.4.065
- Lee, K.G. and Hong, W.H. (2007), The study on the heat island and cool island according to trend toward higher temperature in urban: Case study of Taegu Metropolitian city, Journal of the Architectural Institute Korea Planning & Design, Vol. 23, No. 8, pp. 219-228.
- Choi, D.H. and Lee, B.Y. (2006), An evaluation on effects to affect indoor thermal environment of the top floor caused by evaporative cooling of roof water spraying, Journal of the Architectural Institute Korea Planning & Design, Vol. 22, No. 5, pp. 287-294.
- Song, B.G., Kim, G.A., Park, K.H. (2016), Reduction in indoor and outdoor temperature of office building with cool roof, KIEAE Journal, Vol. 16, No. 6, pp. 95-101. https://doi.org/10.12813/kieae.2016.16.6.095
- Imran, H.M., Kala, J., Ng, A.W.M., and Muthukumaran, S. (2018), Effectiveness of green and cool roofs in mitigating urban heat island effects during a heatwave event in the city of melbourne in Southeast Australia, Journal of Cleaner Production, Vol. 197, pp. 393-405. https://doi.org/10.1016/j.jclepro.2018.06.179
- Seifhashemi, M., Capra, B.R., Milller, W., and Bell, J. (2018), The potential for cool roofs to improve the energy efficiency of single storey warehouse-type retail buildings in Australia: A simulation case study, Energy and Buildings, Vol. 158, pp. 1393-1403. https://doi.org/10.1016/j.enbuild.2017.11.034
- Kim, J.W. and Um, J.S. (2012), Comparative evaluation between cool roof and green roof in terms of installation cost: a case study of KNU campus, Journal of Environmental Impact Assessment, Vol. 21, No. 6, pp. 927-939. https://doi.org/10.14249/EIA.2012.21.6.927
- Chung, M.H., Jeoung, J.R., Shin, C.S., Kang, I.S., and Park, J.C. (2015), A case study on application of cool roofs for urban heat island mitigation, Architectural Institute of Korea, 24 April, Seoul, Republic of Korea, Vol. 35, No. 1, pp. 331-332.
- Ryu, T.H. and Um, J.S. (2013), Evaluating changing trends of surface temperature in winter according to rooftop color using remotely sensed thermal infrared image, Journal of the Korean Society for Geospatial Information System, Vol. 21, No. 1, pp. 27-37. https://doi.org/10.7319/kogsis.2013.21.1.027
- Ryu, T.H. and Um, J.S. (2013), Comparative evaluation of surface temperature among rooftop colors of flat roof building models : Towards performance evaluation of cool roof, Journal of the Korea Institute of Ecological Architecture and Environment, Vol. 13, No. 6, pp. 83-91.
- Korea Meteorological Administration. (2018), Newsletterabnormal climate monitoring, No. 11-1360000-000072- 08, Korea Meteorological Administration, Seoul, pp. 1-2.
- Kim, G.A., Choi, J.M., and Park, K.H. (2016), Analysis of thermal environment in buildings according to color change of roof and applicability of cool roof, Journal of KIAEBS, Vol. 10, No. 6, pp. 409-415.
- Park, S.H., Kong, K.B., and Min H.J. (2017), Performance evaluation of cool roof for mitigating urban heat island effects: Case study of 'Gangnam-gu public health center' in Seoul, South Korea, Journal of the Architectural Institute of Korea Structure & Construction, Vol. 33, No. 4, pp. 55-62. https://doi.org/10.5659/JAIK_SC.2017.33.4.55
- Yoon, S.G., Yang, Y.K., Kim, T.W., Chung, M.H., and Park, J.C. (2018), Thermal performance test of a phase-changematerial cool roof system by a scaled model, Advances in Civil Engineering, Vol. 2018, Article ID. 2646103, pp. 1-11.
- Romeo, C. and Zinzi, M. (2013), Impact of a cool roof application on the energy and comfort performance in an existing non-residential building, A Sicilian case study, Energy and Buildings, Vol. 67, pp. 647-657. https://doi.org/10.1016/j.enbuild.2011.07.023
- Roman, K.K., O'Brien, T., Alvey, J.B., and Woo, O. (2016), Simulating the effects of cool roof and PCM (Phase Change Materials) based roof to mitigate UHI (Urban Heat Island) in prominent US cities, Energy, Vol. 96, pp. 103-117. https://doi.org/10.1016/j.energy.2015.11.082