Performance Comparison of Two Low-CO2 Emission Solar/Methanol Hybrid Combined Cycle Power Systems
Performance Comparison of Two Low-CO2 Emission Solar/Methanol Hybrid Combined Cycle Power Systems
复制标题
两种低二氧化碳排放太阳能/甲醇混合联合循环发电系统的性能比较
DOI：
10.1016/j.apenergy.2015.06.052
复制
发表时间：
2015-10
期刊：
影响因子：
11.2
通讯作者：
Noam Lior
中科院分区：
文献类型：
--
作者：
Yuanyuan Li;Na Zhang;Noam Lior
提出并分析了基于太阳能驱动甲醇分解和基于太阳能驱动甲醇重整的两种新型太阳能-甲醇联合循环发电系统。在相对较低的温度下的高甲醇转化率提供了使用仅200-300 °C的太阳能热通过吸热甲醇转化及其转化为化学能来驱动合成气生产的优点。采用预燃烧脱碳从完全转化的合成气生产无CO2燃料，然后燃烧以在高温下产生热量，用于在所提出的先进联合循环系统中发电。为了提高效率，系统的配置是基于级联使用不同温度的多个热源的原则。在其设计点的混合动力系统的热力性能进行了模拟和评估。结果表明，该系统的（火用）效率可达55%，CO2比排放量可达34 g/kW·h。与采用烟气CO2捕集的燃气/蒸汽联合循环相比，太阳能辅助系统CO2排放量降低36.8%，化石燃料节约率达到30%，太阳能热份额为20%。该系统集成预测了太阳能的高效转化和低能量损失的二氧化碳捕获，其额外优势是太阳能的温度相对较低，其收集更便宜、更简单。该系统的组成部分是强大的，通用的，所提出的混合方法也可以使用类似的好处，通过替代太阳能热输入与其他低热源，系统集成实现了清洁使用的化石燃料和太阳能热的高效转换的双重目的，在同一时间。
Two novel hybrid combined cycle power systems that use solar heat and methanol, and integrate CO2capture, are proposed and analyzed, one based on solar-driven methanol decomposition and the other on solar-driven methanol reforming. The high methanol conversion rates at relatively low temperatures offer the advantage of using the solar heat at only 200–300 °C to drive the syngas production by endothermic methanol conversions and its conversion to chemical energy. Pre-combustion decarbonization is employed to produce CO2-free fuel from the fully converted syngas, which is then burned to produce heat at the high temperature for power generation in the proposed advanced combined cycle systems. To improve efficiency, the systems’ configurations were based on the principle of cascade use of multiple heat sources of different temperatures. The thermodynamic performance of the hybrid power systems at its design point is simulated and evaluated. The results show that the hybrid systems can attain an exergy efficiency of about 55%, and specific CO2emissions as low as 34 g/kW h. Compared to a gas/steam combined cycle with flue gas CO2capture, the proposed solar-assisted system CO2emissions are 36.8% lower, and a fossil fuel saving ratio of ∼30% is achievable with a solar thermal share of ∼20%. The system integration predicts high efficiency conversion of solar heat and low-energy-penalty CO2capture, with the additional advantage that solar heat is at relatively low temperature where its collection is cheaper and simpler. The systems’ components are robust and in common use, and the proposed hybridization approach can be also used with similar benefits by replacing the solar heat input with other low heat sources, and the system integration achieves the dual-purpose of clean use of fossil fuel and high-efficiency conversion of solar heat at the same time.
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DOI：
10.1016/b978-008043018-8/50018-7
发表时间：
1999
期刊：
--
影响因子：
--
作者：
P. Chiesa;S. Consonni;G. Lozza
通讯作者：
P. Chiesa;S. Consonni;G. Lozza
影响因子：
6.7
作者：
H. Hong;Hongguang Jin;J. Ji;Zhifeng Wang;R. Cai
通讯作者：
H. Hong;Hongguang Jin;J. Ji;Zhifeng Wang;R. Cai
影响因子：
9
作者：
I. S. Ertesvåg;H. Kvamsdal;O. Bolland
通讯作者：
I. S. Ertesvåg;H. Kvamsdal;O. Bolland
影响因子：
10.4
作者：
Colin F. Alie;L. Backham;E. Croiset;P. Douglas
通讯作者：
Colin F. Alie;L. Backham;E. Croiset;P. Douglas
影响因子：
4.6
作者：
A. Steinfeld;R. Palumbo
通讯作者：
A. Steinfeld;R. Palumbo