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To solve the two core problems of solar-coal hybrid power generation, namely the high cost of solar collectors and the low solar conversion efficiency, a novel low-cost and efficient solar-coal hybrid power generation system was proposed.
In this new system, by using low-temperature evacuated tube solar energy to drive the waste heat recovery, the cost of solar collectors can be reduced significantly and solar amplified utilization is achieved. The performance of the new system was revealed by simulation, thermodynamic analysis, and economic analysis.
Based on a typical 600 MW unit, the new system exhibited a solar-to-electricity efficiency of 32.68% via the novel mode of evacuated tube solar-driven waste heat recovery. The cost of solar collecting devices in the proposed system was reduced to 34.9% of that in the conventional system. The cost of solar-generated electricity was kept at 0.440 yuan/(kW·h). [Conclusions] The thermal and economic performance of the proposed system was significantly improved compared with that of the conventional one, and the key problems in the field of solar-coal hybrid power generation have been solved.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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