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Table 2 Primary energy (PE) inputs, outputs, losses, and energy ratio for the two biomethane production scenarios

From: Exploring the potential for biomethane production by willow pyrolysis using life cycle assessment methodology

 

Input (PE)

Output

Losses

Energy ratio (out/in)

(GJ/ha/year)

Total

Biomethane1

Exported heat

Total

Methane

Waste heat

Reference

26.0

141.0

0.0

141.0

6.0

0

5.4

Willow a

12.5

111.0

10.0

121.0

2.0

21.7

8.9

  1. 1Biomethane lower heating value = 48 MJ/kg