Page 231 - Advanced Gas Turbine Cycles
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0 ZOO0 4000 6OQO 8MH) loo00 12000 14000 16000
HEAT RATE (kJ/kWh)
Fig. B.3. Electricity price for typical gas turbine plants-running hours 4000 p.a. (after Ref. [4])
imposed by a carbon or carbon dioxide tax. For example, a CCGT plant of 54% thermal
efficiency, delivering electricity at a generating cost of 3.6 ckWh can produce C02 at a
rate of 0.3 kg/kWh, as indicated in Fig. B.5. If the carbon dioxide tax is set at $50/tonne of
C02 (5 ckg C02), then there is an additional amount of (0.3 x 5) = 1.5 ckWh to be
0.2 0.25 0.3 0.35 0.4 Od5 0.5 0.55 0.6 0.65 0.7
OVERALL EFFICIENCY [LHV]
Fig. B.4. Carbon dioxide emissions for various power plants as a function of overall efficiency (after Davidson
and Keeley [5]).
