A New Energy-Efficient Building System Based on Insulated Concrete Perforated Brick with a Sandwich
The purpose of this research is to put forward a new energy-efficient building system that can meet the energy saving requirement of 65% for public buildings in cold areas based on modified insulated concrete perforated brick with a sandwich. Modified brick was composed of three parts and three parts can be made a whole in brick manufacturing and it was called self-thermal insulation concrete perforated brick and could avoid appearance of cracks. The tesst was done to obtain thickness of EPS for modified insulated concrete perforated brick with a sandwich in order to meet the requirement of insulation. Thickness of EPS was set to to 45, 50, 55, 60, 65 and 75 mm respectively and comparative experiments were also carried out to verify the effect of insulation for modified bricks and unmodified bricks. Field tests were carried out to obtain appropriate masonry methods for modified bricks. Based on the results of analysis and discussion, then obtained: (1) Heat transfer coefficient of wall made by modified bricks was less than heat transfer coefficient of wall made by unmodified bricks when the same for thickness of EPS, it could be reduce by up to 45%; (2) When thickness of insulating layer was 65 mm, heat transfer coefficient of wall made by modified bricks could reached minimum limit 0.45 and it could meet energy saving requirement of 65% for buildings in cold area. (3) Insulating layer, located inside of the wall, could avoid appearance of cracks on surface of wall for modified bricks.
Yong Qiu. Researchs on Thermal Self-insulation materials and system of exterior-walls: [D]. Hangzhou (China): Zhejiang university, 2007.
Hou-li Xie. Research and application of self-insulation system of fired-shale hollow brick: [D]. Chongqing (China): Chongqing university, 2012.
Ling Liu. Studies on structural system of self-insulation multi-storey residential buildings: [D]. Xi’an(China): Xi’an university of architecture and technology, 2011.
Lorente S, Petit M, Javelas R. “The effects of temperature conditions on the thermal resistance of walls made with different shapes vertical hollow bricks.” Energy & Buildings 28(1998):237-240. doi:10.1016/S0378-7788(97)00059-5.
Del Coz Diaz J J, Garcia Neito P J, Martin A, et al. “Non-linear thermal analysis of light concrete hollow brick walls by the finite element method and experimental validation.” Applied Thermal Engineering 26(2006):777-786. doi:10.1016/j.applthermaleng.2005.10.012.
Del Coz Diaz J J, Garcia Neito P J, Martin A, et al. “Analysis and optimization of the heat-insulating light concrete hollow brick walls design by the finite element method. ” Applied Thermal Engineering 27(2007):1445-1456. doi:10.1016/j.applthermaleng.2006.10.010.
Hui-hui Lv, Jian Wang. “On research status of self-insulation materials of walls”. Journal of Jiangsu jianzhu Institute 13(2013):36-38. doi:10.3969/j.issn.2095-3550.
Ze-wu Fu. Research on the self-insulation solf wall of the auoclaved aerrated concrete blocks: [D]. Wuhan (China): China university of geosciences, 2013.
M. Zukowski and G. Haese. “Experimental and numerical investigation of a hollow brick filled with perlite insulation.” Energy Build 42(2010):1402-1408. doi：10.1016/j.enbuild.2010.03.009
M. P. Morales, M. C. Juarez, P. Munoz, and J. A. Gomez. “Study of the geometry of a voided clay brick using non-rectangular perforations to optimise its thermal properties.” Energy Build 43(2011):2494-2498. doi：10.1016/j.enbuild.2011.06.006.
M. P. Morales, M. C. Juarez, P. Munoz, M. A. Mendivil, and J. A. Ruiz. “Possibilities for improving the equivalent thermal transmittance of single-leaf wall for buildings” Energy Build 69(2014):352-364. doi：10.1016/j.enbuild.2013.11.038.
V.A F. Costa. “Improving the thermal performance of red clay holed bricks.” Energy Build 70(2014):473-480. doi：10.1016/j.enbuild.2013.11.052.
J. J. del Coz Diaz, P. J. Garcia Nieto, F. P. Alvarez Rabanall, M. Alonso Martinez, J. Dominguez Hernandez, and J. M. Perez Bella. “The use of response surface methodology to improve the thermal transmittance of lightweight concrete hollow bricks by FEM”. Constr. Build .Mater 52(2014):331-344. doi：10.1016/j.conbuildmat.2013.11.056.
D. L. Tang, L. P. Li, C. F. Song, W. Q. Tao and Y. L. He. “Numerical thermal analysis of applying insulation material to holes in hollow brick walls by the finite-volume method” Numerical Heat Transfer Part A: Applications 68(2015):526-547. doi：10.1080/10407782.2014.986396.
Jian Wu, Guo-liang Bai, Hui-yi Zhao, Xue Li. “Mechanical and thermal tests of an innovative environment-friendly hollow block as self-insulation wall materials”. Construction and Building Materials 93(2015):342-349. doi：10.1016/j.conbuildmat.2015.06.003.
Shao-dan Hou, Fu-sheng Liu, Shao-jie Wang, Han-bing Bian. “Coupled heat and moisture transfer in hollow concrete block wall filled with compressed straw bricks.” Energy and Building 135(2017):74-84. doi：10.1016/j.enbuild.2016.11.026.
Ma Biao,et al. “Design and thermal calculation for a composite self-heat insulation masonry structure. ” The new building material 43 (2016):12-15. doi:10.3969/j.issn.1001-702X.2016.02.003.
Wu Junxi, Wang Jipei, Wang Yide. Concrete porous brick: China, ZL03214811.9 [P]. June 02,2004.
Wang Yide, Liu Jingyuan. “A new insulated concrete perforated brick with a sandwich”. Building block & block building (2010):17-18+20+48. doi:10.3969/j.issn.1003-5273.2010.05.006.
GB/T 13475-2008. Thermal insulation-determination of steady-state thermal transmission properties-Calibrated and guarded hot box: [S]. China building materials federation, 2008.
GB50176-2016. Thermal design code for civil building: [S]. China Architecture & Building Press, 2017.
- There are currently no refbacks.
Copyright (c) 2018 Guoqi Xing
This work is licensed under a Creative Commons Attribution 4.0 International License.