Green and Energy-Saving Ecological Reconstruction Design of Existing Buildings in Cities in Severe Cold Areas

<div>Test on the effect of green energy-saving ecological transformation of existing buildings in cities in severe cold areas. (a) Before transformation. (b) After transformation.</div>

Journal of Environmental and Public Health

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Figure 7

Figure 7: Green and Energy-Saving Ecological Reconstruction Design of Existing Buildings in Cities in Severe Cold Areas 