Life Cycle Assessment of the District Heating Distribution System in China — Network Construction

Abstract:

In China, the environmental impact from the construction of the distribution system is seldom discussed. In this study, the environmental impact from construction of district pipes is considered. The purpose is to identify environmental significant parts in the construction of district pipes and to use the results in the actual projects including once more parts of the district distribution system have been investigated with LCA methodology.(Methods) Construction of district pipe networks according to the technical specification was studied. The total consumption of energy and materials was calculated based on budget norm for projects. The functional unit used in the study is construction of 100 metres of pipe system. The studied pipes are: pipe of the dimension DN100, DN200 (Seamless steel tubes) and DN500 (spirally welded steel tubes) .Urban environment surroundings were studied. A short description of the inventory, some inventory results and a life cycle impact assessment are presented. Based on the concept of the End-point damage weighting method, the total environment load is given.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 2662-2666
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.2662
• Online since: December 2012
• Authors: Zhen Li, Wei Wei Wang, Hong Ming Sun
• Keywords: District Distribution System, Life Cycle Assessment, Prefabricated Insulated Directly Buried Pipe

References

[1] Huang Zhijia, Zhang Xu. Life cycle assessment of air conditioning heat sources . Journal of HVAC, 2005, 35(4): 18-21.

[2] Li Menyun, Zhang Shushen, Chen Yu. Life cycle assessment of environmental impact of air conditioning cold and heat source. Journal of HVAC, 2004, 34(7): 93-96.

[3] Morgan Froling, Camilla Holmgren and Magdalena Svanstrom. Life Cycle Assessment of the District Heat Distribution System Part 1: Pipe Production. Int J LCA, 2004, 9 (2): 130-136.

DOI: 10.1007/bf02978572

[4] Morgan Froling and Magdalena Svanstrom. Life Cycle Assessment of the District Heat Distribution System. Part 2: Network Construction . Int J LCA, 2005, 10 (6): 425-435.

DOI: 10.1065/lca2004.12.195

[5] Camilla Persson , Morgan Froling and Magdalena Svanstrom. Life Cycle Assessment of the District Heat Distribution System. Part 3: Use Phase and Overall Discussion. Int J LCA, 2006, 11 (6): 425-435.

DOI: 10.1065/lca2005.08.225

[6] Gu Daojin. Life cycle assessment of building's environmental load. Doctoral thesis. Beijing: Tsinghua Univ, (2007).

[7] Gu Daojin. GU Lijing, Zhu yingxin, etal. Comparison between construction and operation energy consumption of buildings. Journal of HVAC, 2007, 37(5): 58-60.