提出一种新型高温太阳能热化学与甲烷互补固体氧化物燃料电池-燃气轮机-卡琳娜循环动力系统,利用高温太阳能热驱动甲烷重整制氢,产生的富氢合成气驱动燃料电池复合动力系统发电,实现能量高效梯级利用。建立系统技术经济性能分析模型,以静态回收期、动态回收期、净现值以及平准化成本电价为评价指标,分析在既定运行策略下燃料价格、售电价格、年运行时长、利率和折现率等因素对系统技术经济性能的影响,并研究变工况下系统应用在不同地区不同条件时的经济性能。结果表明：新系统在设计寿命年限内总成本为1922.52万元,其中燃料成本占比最高,为58.57%。系统在设计寿命末年净现值为131.20万元,简单回收期为11.06 a。典型地区应用计算结果表明,系统在强太阳辐照度和高电价地区的净现值更高、投资回收期更短,而在低气价和强太阳辐照度地区的平均标准成本化电价更低。
Abstract
A new solid oxide fuel cell-gas turbine-Kalina cycle （SOFC-GT-KC） hybrid power system integrated with high-temperature solar therm chemical and methane complementary is proposed in this article, which uses high-temperature solar energy to drive methane reforming to produce hydrogen, and the produced hydrogen-rich syngas drives the SOFC-GT-KC hybrid power system to generate electricity, realizing efficient energy cascade utilization. The analysis model of the new system technical and economic performance is established, with simple payback period, dynamic payback period, net present value, and levelized cost of electricity as performance evaluation indicators. The effects of fuel price, electricity sale price, annual operating hours, interest rate and discount rate on the new system’s techno-economic performance under the given operation strategy are analyzed, and the economic performance of the new system performance in different regions with different operating conditions is studied. The research results show that the total cost of the new system within the design life is 19.23 million yuan, of which fuel cost accounts for the highest proportion, reaching 58.57%. The net present value of the new system at the end of its design life is 1.31 million yuan, with a simple payback period of 11.06 years. The calculation results of typical regional applications show that the net present value of the new system is higher and the investment payback period is shorter in areas with strong solar radiation and high electricity price, while the average levelized cost of electricity is lower in areas with low gas prices and strong solar radiation.
关键词
太阳能 /
燃料电池 /
梯级利用 /
制氢 /
分布式发电 /
经济性分析
Key words
solar energy /
fuel cell /
cascade utilization /
hydrogen production /
distributed power generation /
economic analysis
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基金
国家自然科学基金重大项目（52090064）
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