External Insulation Design Impacts on the Energy Consumption and Greenhouse Gas Emission of Building

Abstract:

In order to determine the optimal parameters of the external insulation system and guide the energy saving and greenhouse gas emission reduction of building, a typical student dormitory building in Beijing was chosen as research object. The life cycle thinking and dynamic simulation method were used in the present investigation. The relationship between the expandable polystyrene (EPS) external insulation system design parameters and building energy consumption and greenhouse gas emission in each phase of materials production phase, operation phase and the whole life cycle was studied, systematically . The results show that the consumption of clay brick, concrete and cement mortar account for 98.1% of the total materials consumption, where concrete contributes most to both energy consumption (36.6%) and greenhouse gas emission (35.9%). Regarding the contribution to energy consumption and greenhouse gas emission for building life cycle, materials production phase accounts for 5.6%-18.8% and building operation phase takes up 80.6%-93.4%. With the increase of EPS insulation thickness, the energy consumption and greenhouse gas emission increase linearly in materials production phase, decrease in building operation phase, and have an optimization value in the building life cycle to reach the minimum when the heat transfer coefficient (K) is 0.3W / (m² • K) equivalent to the EPS insulation thickness is 130mm. Building heating load reduces with the increases of insulation thickness, but the envelope thermal insulation performance has no significant influence on cooling load.

• Periodical: Materials Science Forum (Volume 847)
• Pages: 381-390
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.847.381
• Online since: March 2016
• Authors: Yao Li, Xian Zheng Gong, Zhi Hong Wang, Hao Li, Miao Miao Fan
• Keywords: Building Energy Consumption, Expandable Polystyrene (EPS) External Insulation System, Greenhouse Gas Emission, Life Cycle

References

[1] Building Energy Saving and Technology Department of Housing Ministry in Heilongjiang Province, Promote building energy efficiency vigorously and construct resources saving society, J. Information of China Construction. 19 (2012) p.18.

[2] B. Z. Qian, J. F. Zhu, Technology Progress of Thermal Insulation Materials of Building Energy Efficiency, J. Building Energy Efficiency. 37 (2009) p.56.

[3] L. Gustavsson, A. Joelsson, R. Sathre, Life cycle primary energy use and carbon emission of an eight-storey wood-framed apartment building, J. Energy and Buildings. 42 (2010) 230-242.

DOI: 10.1016/j.enbuild.2009.08.018

[4] C. Scheuer, G. Keoleian, P. Reppe, Life cycle energy and environmental performance of a new university building: modeling challenges and design implications, J. Energy and Buildings. 35(10) (2003) 1049-1064.

DOI: 10.1016/s0378-7788(03)00066-5

[5] J. Kneifel, Life-cycle carbon and cost analysis of energy efficiency measures in new commercial buildings, J. Energy and Buildings. 42 (2010) 333-340.

DOI: 10.1016/j.enbuild.2009.09.011

[6] A. Audenaert, S. H. De Cleyn, M. Buyle, LCA of low-energy flats using the Eco-indicator 99 method: Impact of insulation materials, J. Energy and Buildings. 47 (2012) 68-73.

DOI: 10.1016/j.enbuild.2011.11.028

[7] X. Su, X. Zhang, J. Gong, Inventory analysis of LCA on steel and concrete-construction office buildings, J. Energy and Building. 40 (2008) 1188-1193.

DOI: 10.1016/j.enbuild.2007.10.016

[8] H. J. Wu, Z. W. Yuan, L. Zhang. J. Bi, Life cycle energy consumption and CO2 emission of an office building in China, J. The International Journal of Life Cycle Assessment. 17 (2012) 105-118.

DOI: 10.1007/s11367-011-0342-2

[9] Y. Chang, Y. W. Wang, Life-Cycle Energy Analysis of Urban Residential Buildings in China, J. Journal of Engineering Management. 24(4) (2010) 393-397.

[10] S. Liang, Analysis on Optimization of External Wall Structural System of Residential Buildings Based on LCA, J. Building Science. 26(12) (2012) 97-101.

[11] Beijing Planning Commission, DB11/891-2012, Design Standard for Energy Efficiency of Residential Buildings, Beijing Architectural Design Institute, Beijing (2012).

[12] Z. Li, The Life Cycle Assessment of External Thermal I nsulation Composite Systems Based on Two Kinds of Materials, Master's thesis, Beijing University of Technology (2014) P. 26.

[13] M. H. Fang, The Life Cycle Assessment of Typical Wall Materials, Master's thesis, Beijing University of Technology (2013) P. 35.

[14] CNMLCA (Centre of National Material Life Cycle Assessment), Material Life Cycle Assessment Database—Sinocenter. Beijing University of Technology (BJUT), (2013) http: /cnmlca. bjut. edu. cn/database.

[15] S. P. Wang, Life Cycle Assessment of Several Traditional Building Glass Windows, Master's thesis, Beijing University of Technology (2014) P. 75.

[16] M. L. Zhao, Life Cycle Assessment of Concrete Structural Components of Dwelling, Master's thesis, Beijing University of Technology (2013) P. 75.

[17] ISO, ISO 14040: Environmental Management - Life Cycle Assessment - Principles and Framework, International Organization for Standardization, Geneva, Switzerland (2006).

DOI: 10.1065/lca2005.03.001

[18] X. H. Di, Several Fundamental Researches in the Life Cycle Assessment for Mineral Resources and Materials, Doctor Dissertation, Beijing University of Technology (2005) P. 67.

[19] Tsinghua University, Designer's simulation toolkits (DeST-h), Tsinghua University, Beijing (2004).

[20] B. Peng, Case Study on Life Cycle Energy Consumption and CO2 Emissions of Green Buildings, Master's thesis, Tsinghua University (2012) 53-57.

[21] PRé Consultants, Simapro 7. 2. 2 Amersfoort, the Netherlands, PRé Consultants (2013).