Study on Evaporative Cooling Effect of Porous Decorative Layer Applied to Vertical Walls

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The porous materials are more and more popular throughout the world. However most of the resent researches focus on the porous materials applying to horizontal plane. In this paper an experiment was conducted to study the applicability of porous decorative layer applying to vertical walls. The Experimental result shows that the wet porous decorative layer has a good applicability to west-facing wall by reducing the external surface temperature at least 8°C and eliminating the temperature peak of inner surface. The equivalent thermal resistance of the porous decorative layer is 0.40 m2•K/W, when using the 4-day value of the measurement. In the summer of Guangzhou, the porous decorative layer on west-facing wall is recommended to supply water once a day at 13:00.

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556-561

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August 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] C. Wei-jiao, L. Na, C. Ya-fei, et al. Influences of Surface Pavements on Heat Island Phenomenon[J]. Building Science, 2012, 28(2): 42-45. In Chinese.

Google Scholar

[2] S. E. G. JAYAMAHA, N. E. WIJEYSUNDERA,S. K. CHOU. Effect of Rain on the Heat Gain through Building Walls in Tropical Climates[J]. Building and Environment, 1997, 32(5): 465-477.

DOI: 10.1016/s0360-1323(97)00005-x

Google Scholar

[3] M. Qing-lin, Z. Yu,Z. Lei. Measurement of the equivalent thermal resistance of rooftop lawns in a hot-climate wind tunnel[J]. Journal of Harbin Institute of Technology, 2006, 13(Sup): 53-56.

Google Scholar

[4] Y. Zhang, H. Bi, Y. Feng, et al. An experimental study of climatic evaporation of porous material in a wind tunnel[C]. The Third International Conference on Built Environment and Public Health. The Fifth International Workshop on Energy and Environment of Residential Buildings, Guilin, China: 2009, 1315-1322.

Google Scholar

[5] N. Li,Q. Meng. Wind Tunnel Experimental Study on Influence Factors of Evaporative Heat Transfer of Porous Building Material[C]. 2010 International Conference on Advances in Energy Engineering, 2010, 174-177.

DOI: 10.1109/icaee.2010.5557588

Google Scholar

[6] X. yina, L. Ning,M. Qinglin. Research on the applicability of porous bricks with different thckness in passive evaporation cooling technique[J]. New Building materials, 2011, (7): 30-33, 37. In Chinese.

Google Scholar

[7] The Indrustrial Standard of People's Republic of China. Design Standard for Thermal Environment of Urban Residential Areas[S]. JGJ ××-2011. In Press.

Google Scholar

[8] D. H.W. Li,J. C. Lam. Evaluation of slope irradiance and illuminance models against measured Hong Kong data[J] Building and Environment, 2000, 35501-509.

DOI: 10.1016/s0360-1323(99)00043-8

Google Scholar

[9] Z. Feng, H. Ming-fu,Z. Guo-ping. Calculat ion Method of Solar Radiat ion on Vert ical Surface[J]. Building Energy Efficiency, 2007, 35(5): 55-59. In Chinese.

Google Scholar

[10] Z. wang, Q. Meng,B. zhang. Double Heat Flux Meter Method in Testing Thermal Resistance in Field Measurement[J]. Building Energy Efficiency, 2004, 938-40. In Chinese.

Google Scholar