Table 7
Simulation model validation against literature data.
| Parameter | Unit | Pure CO2 | Pure CO2 | Oxyfuel | PCC | Pure CO2 |
|---|---|---|---|---|---|---|
| Source | [8] | [8] | [8] | [9] | [10] | |
| Inlet pressure bar | bar | 15 | 15 | 15 | 1.01 | 4.6 |
| Final pressure | bar | 151 | 151 | 151 | 90 | 130 |
| Liquefaction pressure | bar | N/A | 62 | N/A | N/A | 25 |
| Inter-cooling temperature | °C | 38 | 38 | 38 | 10 | 35 |
| Compressor stages | No. | 4 | 2 | 4 | 8 | 3 |
| Pumping stages | No. | 0 | 1 | 0 | 0 | 1 |
| Stage pressure drop | bar | N/A | N/A | N/A | 0.5 | 0.1 |
| Equation of state | PR | PR | PR | TREND | PR | |
| Compressor efficiency | % | 80 | 80 | 80 | 85 | 75 |
| Pump and compressor power | kWh/tCO2 | 36.9 | 32 | 39.6 | 92.9 | 62 |
| Power – this study | kWh/tCO2 | 36.85 | 32.1 | 39.1 | 91.6 | 61.3 |
| Difference | % | 0.14 | −0.31 | 1.3 | 1.4 | 1.1 |
PR: Peng-Robinson. [8] uses PR in REFPROP, [10] uses PR in Aspen HYSYS. Oxyfuel: Composition is 96.78% CO2. For simulation in this study REFPROP has been used as back-end in CoolProp. PCC: Post Combustion Capture. The source uses 99.99% pure CO2 but the validation is against 100% pure CO2. The power reported from [10] is total power including refrigeration compressor power in addition to compression and pumping power. Value read from graph.
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