Abstract
World has been suffering from energy crisis since 1970. This is because of the increased population and industrialization. Buildings have a significant contribution to total energy consumption across the globe. The increased urbanization leads to boom in construction of buildings. The materials used for the construction of buildings affect the climate of the city up to a great extent and affect the energy consumption as well. So, construction materials should be chosen wisely. The surface temperature of the building envelope is affected by the coatings used. Cool coatings help in reducing the surface temperature of the building envelope. Time lag and decrement factor are the indicators of energy saving in building. In this paper, the effect of cool coating on time lag and decrement factor was studied. Values of time lag and decrement factor were evaluated in different climatic zones of India. It has been found that as the absorptivity of the building envelope increases, the decrement factor increases. By changing the absorptivity from 0.2 to 0.73, a minimum change of 16% (New Delhi) in decrement factor and 11.75% (Jodhpur) in surface temperature was observed. The maximum change in decrement factor was 56.44% (Jodhpur). The maximum change in surface temperature was 39.02% (Bangalore). So, it should always be practised to keep the absorptivity of the building envelope as low as possible.
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References
Valsson, S., Bharat, A.: Urban heat Island: cause for micro climate variation. Arch.-Time Space & People 20–25 (2009)
Urbanization in India. https://en.wikipedia.org/wiki/Urbanisation_in_India. Last accessed 23 Feb 2019
Kleerekoper, L., Van Esch, M., Salcedo, T.B.: How to make a city climate-proof, addressing the urban heat island effect. Resour. Conserv. Recycl. 64, 30–38 (2012)
Buechley, R.W., Van Bruggen, J., Truppi, L.E.: Heat island = death island? Environ. Res. 5(1), 85–92 (1972)
Conti, S., Meli, P., Minelli, G., Solimini, R., Toccaceli, V., Vichi, M., Beltrano, C., Perini, L.: Epidemiologic study of mortality during the Summer 2003 heat wave in Italy. Environ. Res. 98(3), 390–399 (2005)
Synnefa, A., Santamouris, M., Akbari, H.: Estimating the effect of using cool coatings on energy loads and thermal comfort in residential buildings in various climatic conditions. Energy Build. 39(11), 1167–1174 (2007)
Hernández-Pérez, I., Xamán, J., MacÃas-Melo, E.V., Aguilar-Castro, K.M., Zavala-Guillén, I., Hernández-López, I., Simá, E.: Experimental thermal evaluation of building roofs with conventional and reflective coatings. Energy Build. 158, 569–579 (2018)
Shen, H., Tan, H., Tzempelikos, A.: The effect of reflective coatings on building surface temperatures, indoor environment and energy consumption—an experimental study. Energy Build. 43(2–3), 573–580 (2011)
Arora, C.P.: Refrigeration and Air Conditioning, 3rd edn. Tata McGraw-Hill, New Delhi (2009)
Asan, H.: Investigation of wall’s optimum insulation position from maximum time lag and minimum decrement factor point of view. Energy Build. 32(2), 197–203 (2000)
ISHRAE: Indian society of Heating, Refrigerating and Air conditioning Engineers. India (2017)
IS 11907-1986: Recommendation for calculation of solar radiation in buildings
Sameera, S., Rao, P.P., Divya, S., Raj, A.K., Thara, T.A.: High IR reflecting BiVO4-CaMoO4 based yellow pigments for cool roof applications. Energy Build. 154, 491–498 (2017)
Synnefa, A., Santamouris, M., Apostolakis, K.: On the development, optical properties and thermal performance of cool colored coatings for the urban environment. Sol. Energy 81(4), 488–497 (2007)
Thongkanluang, T., Chirakanphaisarn, N., Limsuwan, P.: Preparation of NIR reflective brown pigment. Procedia Eng. 32, 895–901 (2012)
IS: 3792: Indian standard guide for heat insulation of non-industrial buildings. India: Indian standards institution (1978)
CIBSE: CIBSE Environmental Design Guide-A. 7th ed, Chartered Institution of Building services engineers, London (2006)
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Mahapatra, D., Ashok Babu, T.P. (2020). Effect of Solar Optical Properties of Building Envelope on Time Lag, Decrement Factor and Energy Saving of Buildings. In: Vinyas, M., Loja, A., Reddy, K. (eds) Advances in Structures, Systems and Materials. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-3254-2_13
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DOI: https://doi.org/10.1007/978-981-15-3254-2_13
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