Table 7 Highest energy savings of EPS, PU and XPS.

From: A study on optimum insulation thickness of building walls in hot summer and warm winter zone in China

Orientation

Material

Energy savings/$·m-2

Carbon emission reduction/kg·m-2

South wall

EPS

14.75

124.211

PU

12.01

101.137

XPS

13.18

110.989

North wall

EPS

12.58

105.937

PU

10.22

86.063

XPS

11.33

95.411

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