Potentiale zur energetischen Nutzung von Biomasse in der ... - EPFL
Potentiale zur energetischen Nutzung von Biomasse in der ... - EPFL
Potentiale zur energetischen Nutzung von Biomasse in der ... - EPFL
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once through conversion. A comb<strong>in</strong>ed cycle power generation unit is capable of produc<strong>in</strong>g 15.6 MW e<br />
of electrical power. The total capital cost of this <strong>in</strong>stallation is about 427 million CHF 2002 (1070<br />
CHF/kW th <strong>in</strong>put or 2540 CHF/kW F.T. output), and FT liquids levelised production cost is about 43.7<br />
CHF/GJ (15.7 cts/kWh th ) based on a delivered biomass price of 220 CHF/t d.m. (4.4 cts/kWh th ). The overall<br />
efficiency of such an <strong>in</strong>stallation is approach<strong>in</strong>g 46%.<br />
Parameters<br />
Plant capacity (output) 168 MWth HHV (FT liquids)<br />
15.6 MWe (electricity)<br />
Annual load 8,000 hr<br />
Interest rate 10 %<br />
Economical life 15 yrs<br />
Onl<strong>in</strong>e 2010<br />
Currency conversion (01.01.2002) 1.48325 CHF/<br />
Investment<br />
Inputs Investment Percentage of … Annuity factor Annual expenses<br />
Pre-treatment 68,229,500 CHF 16.0% TCI 0.131 8,970,390 CHF/yr<br />
Gasification system 173,836,900 CHF 40.7% TCI 0.131 22,854,994 CHF/yr<br />
Gas Clean<strong>in</strong>g 29,516,675 CHF 6.9% TCI 0.131 3,880,669 CHF/yr<br />
Syngas process<strong>in</strong>g 19,430,575 CHF 4.6% TCI 0.131 2,554,611 CHF/yr<br />
FT Production 61,406,550 CHF 14.4% TCI 0.131 8,073,351 CHF/yr<br />
Power generation 74,607,475 CHF 17.5% TCI 0.131 9,808,927 CHF/yr<br />
Total Capital Investment (TCI) 427,027,675 CHF 56,142,941 CHF/yr<br />
Variable operat<strong>in</strong>g costs<br />
Inputs Dosis Unit cost Annual expenses<br />
Biomass 72.4 t d.m./hr 220.00 CHF/t d.m. 127,424,000 CHF/yr<br />
Other consumables 14,832,500 CHF/yr<br />
Electricity sale 15.6 MW e -0.067 CHF/kWh -8,402,385 CHF/yr<br />
Total 133,854,115 CHF/yr<br />
Fixed operat<strong>in</strong>g costs<br />
Inputs Percentage of … Annual expenses<br />
Ma<strong>in</strong>tenance 3.0 % of TCI 12,810,830 CHF/yr<br />
Labour 0.5 % of TCI 2,135,138 CHF/yr<br />
Insurance & taxes 1.5 % of TCI 6,405,415 CHF/yr<br />
Total 21,351,384 CHF/yr<br />
Total costs 211,348,440 CHF/yr<br />
Production cost<br />
Levelised production cost (2010-2025) 43,68 CHF/GJ<br />
Table 1 Economics of Fischer-Tropsch liquid bio-fuel/comb<strong>in</strong>ed cycle power plant.<br />
15.73 cts/kWh<br />
The analysis of a typical breakdown of <strong>in</strong>vestment costs of the Fischer-Tropsch liquid<br />
biofuels/comb<strong>in</strong>ed cycle power plant <strong>in</strong>dicates that largest part of the <strong>in</strong>vestment costs is for<br />
preparation of the synthesis gas (68%). The cost of the Fischer-Tropsch synthesis process accounts for<br />
14.4% of the total <strong>in</strong>vestment costs. The rema<strong>in</strong><strong>in</strong>g part of the capital costs is for upgrad<strong>in</strong>g and
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