SOFC
HELP design
HELP applications
Appendix
Fuel Cells in General
SOFC's in General
Example Calculation of Payback Time
| Data: | ||
| SOFC type: | SOFC-HELP | |
| Power-electrical | 100 | Watt electrical |
| Efficiency-electrical | 48 | % |
| Power-thermal | 108 | Watt thermal |
| Total Fuel Cell System Investment | 900 | |
| Gas price in NL | 0,05 | EUR/kWh(thermal) |
| Electricity price in NL | 0,19 | EUR/kWh(electrical) |
| Thermal efficiency of conventional combustion | 85 | % |
| Calculations: | ||
| kWh/year | EUR/year | |
| Electrical yield | 876 | 166 |
| Thermal | 949 | 47 |
| Total SOFC yield | 214 | |
| Gas feed cost | 1825 | 91 |
| Thermal conversion of conventional combustion | 1551 | 77 |
| Profit in EUR/year | 123 | |
| Profit in EUR/year compared to combustion | 136 | |
| Pay back time in years | 7,3 | |
| Payback time in years compared to combustion | 6,6 | |
| Conclusion: Profitable, while the payback time is well within the expected life time of >10 years. | ||
N.B. For information only, energy prices may vary in time.
