太阳能热化学与化学回热联合的冷热电系统

发布时间：2018-02-23 21:24

  本文关键词： 太阳能热化学 储能 化学回热 甲醇分解　出处：《工程热物理学报》2017年09期 　论文类型：期刊论文

【摘要】：提出了一种太阳能热化学与化学回热过程联合的冷热电联产系统。利用太阳能驱动甲醇分解反应,产生的合成气在内燃机中燃烧作功,内燃机排烟余热与导热油换热,并驱动甲醇分解反应以回收余热。对系统进行了热力学性能分析,探究了全年典型日下系统热力性能与储能特性规律.研究结果表明:设计工况下系统一次能源利用率为78.4%,太阳能净发电效率为21.1%。在300~1000 W/m~2的直射辐照强度范围内,系统可以实现稳定运行,太阳能净发电效率稳定在19.3%~21.5%的变化范围内。
[Abstract]:In this paper, a combination of solar thermal chemistry and chemical regenerative process is proposed. The system uses solar energy to drive the decomposition of methanol, the generated syngas is burned in the internal combustion engine, and the exhaust heat of internal combustion engine and the heat transfer of heat conduction oil are obtained. The methanol decomposition reaction was driven to recover the waste heat. The thermodynamic performance of the system was analyzed. The thermodynamic performance and energy storage characteristics of typical daily systems are investigated. The results show that the primary energy utilization ratio of the system is 78.4 and the net solar energy generation efficiency is 21.1.In the direct radiation intensity range of 300 ~ 1 000 W / m ~ 2, the energy efficiency of the system is 78.4, and the net solar energy generation efficiency is 21.1g / m ~ (2) in the range of 300 ~ 1000 W / m ~ (2). The system can operate stably and the efficiency of net solar power generation is within the range of 19.3% and 21.5%.
【作者单位】： 中国科学院工程热物理研究所;中国科学院大学;
【基金】：国家自然科学基金重点项目(No.51236008)
【分类号】：TM61;TU83
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本文编号：1527678