Design og modellering af metanolanlæg til VEnzin-visionen Bilag

17.121 ELECTROLYSER
Water elektrolysis with efficiency.
17.121.1 Nodes
Number of nodes: 5
1. Water in (Internal Number: 97) : water for gas app (C)
2. H2 out (Internal Number: -4) : any gas (I/V)
3. O2 out (Internal Number: -4) : any gas (I/V)
4. Power in (Internal Number: 200) : electrical power
5. Heat loss (Internal Number: 300) : heat
17.121.2 Parameters
Number of parameters: 2
1. Temperature: Temp [C]
2. Efficiency of elektrolysis: η [–]
17.121.3 Equations
Number of equations: 8
1. Only H2 in node 2: yj(H2, medie(2)) = 1
2. Only O2 in node 3: yj(O2, medie(3)) = 1
3. Mol balance: − ˙m2 = ˙m1Mmol(H2)/Mmol(H2O)
4. Equal pressures: p1 = p2
5. Equal pressures: p1 = p3
6. Temperature of outlet gas: T emp = T2
7. Equal temperature of outlet gases: T3 = T2
8. Efficiency of elektrolysis: ˙ Eη = − ˙m2LHVH2
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