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Abstract: In the process of city development, water resource waste problem is serious day by day, building water supply and drainage in the whole project involves a great deal of water resource problem, therefore, water supply and drainage design of how to achieve energy saving has become the symbol of the building. This article in view of the current situation and problems in the construction of water, analyzes the reasons, finally proposes the way of energy-saving design of building water supply and drainage, thereby achieving the effect of energy saving of building water supply and drainage.
Key words: energy; natural resources; energy saving; waste of resource; drainage; energy saving
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