Table 7 Results of product gas volume and gasification efficiency in UCG experiment with steam/water injection.

From: Effects of water injection on reaction temperature and hydrogen production in horizontal co-axial underground coal gasification

  

Product gas volume

(m3/kg)

Gasification efficiency (%)

 

Field/ Model experiment

/coal

/carbon

Huang et al., 202120

(steam)

Field

3.00

4.49

55.6–74.2

Hao et al., 202325

(steam)

Model

2.35

2.95

56.3

This study

(water)

Model

1.69

2.75

60.4

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