Abstract
Improving the peak regulation performance of GTCC (gas turbine combined cycle) based CHP (combined heating and power) system helps to increase the renewable energy consumption and increase the profit of the GTCC based CHP system. In this paper, the effects of different compressor inlet air temperatures on both key parameters and the thermal performance and economic performance of the GTCC based CHP system are studied and feasible operating regions of the GTCC based CHP system are obtained. Finally, taking the heating characteristic day as an example, peak regulation performances and profit change of the GTCC based CHP system are analyzed. The results show that the compressor inlet air heating method helps to enlarge the operation region of the GTCC based CHP system under the same output power. From the heating characteristic days of period 1 to period 4, the renewable energy consumptions of the GTCC based CHP system are increased by 252.15 MW, 380.17 MW, 300.8 MW and 239.96 MW, respectively. From the perspective of technical economic performance, the net annual revenue of the GTCC based CHP system is increased by 181.83 × 104 $. The dynamic payback period is 3.3 years.
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