Table 3: Comparison between different ECLSS architectures. All quantities are expressed per year. R is the percentage of the CO2 produced by the crew that is recovered by the Sabatier reactor.

 

H2O [t]

O2 [t]

H2 [t]

H2O electrolysed [t]

Open loop

102

9.8

0

0

Semi-closed loops

 

 

 

 

H2O (R=1)

17.8

0

0

13.8

H2O (R=0.8)

16.8

0

0

11.1

O2 + H2O (R=0.61)

15.7

2.4

0

8.4

O2 + H2 + H20 (R=1)

12.4

2.4

0.6

8.4

O2 + H2 + H20 (R=0.8)

14.1

2.4

0.3

8.4