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As a novel advanced energy supply system that integrates power supply, heat supply, and renewable energy consumption, the electricity-hydrogen fuel cell combined heat and power (CHP) system has broad prospects for realizing China’s “dual carbon” strategic goal and promoting the green low-carbon transition of the energy industry. At present, the economic feasibility of CHP systems involving gas-solid coupled hydrogen storage technology remains unclear, and systematic quantitative evaluation is still lacking. Therefore, this paper establishes a scientific and targeted economic model to comprehensively evaluate the levelized cost of electricity of such a system and conduct in-depth analysis of its key influencing factors. This paper develops a levelized cost of hydrogen fuel cell electricity (LCOHFCE) economic evaluation model for the CHP system that includes fuel cells, electrolyzers, gas-solid coupled hydrogen storage systems, and other related auxiliary equipment. By systematically evaluating various key economic parameters of the system throughout its entire life cycle, such as initial investment cost, operation and maintenance cost, and related taxes and fees, the authors accurately evaluate the power generation cost using the LCOHFCE indicator, and discuss the influencing mechanisms and degrees of various factors on this indicator in detail. The calculation and analysis results show that the LCOHFCE value of the studied CHP system is 0.186 yuan per kW·h, among them, the regeneration cost of hydrogen storage materials accounts for the highest proportion of the total operation and maintenance cost, reaching 57.41%, which is the core cost component affecting the operation and maintenance cost of the system. In addition, the sensitivity analysis results indicate that for every 5% increase in the recovery rate of hydrogen storage materials, the LCOHFCE indicator decreases by 22.04%~26.88%. When the price of hydrogen storage materials increases by 10 yuan per kg, the LCOHFCE indicator rises by 1.61%~5.91%. Compared with material price, LCOHFCE is significantly more sensitive to recovery rate, and at the same time, the service life of key equipment also exerts significant impact on the LCOHFCE indicator. For the gas-solid coupled hydrogen storage CHP system studied in this paper, the recovery rate of hydrogen storage materials is the most sensitive factor affecting the power generation cost. Reasonably formulating and arranging the equipment overhaul or replacement strategy can further improve the economic performance and market competitiveness of the system. Under the background of China’s “dual carbon” strategy, this system has good application potential.
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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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