基于太阳能热利用系统,建立能势分析模型,对太阳能聚光过程、光热发电、光热化学等主要环节进行能量分析和能势分析,并对光热发电、光热化学2种技术路线进行对比。结果表明太阳能与吸热工质能势不匹配是太阳能热利用系统效率的关键限制因素,热功转化、热化学过程的不可逆性相对较小。现有太阳能光热、光热化学热利用系统的效率均较低,有较大的提升潜力。
Abstract
Based on solar thermal utilization system, energy potential analysis model is established to evaluate some key processes in solar thermal energy utilization technology, which include the solar concentrating process, conversion of thermal energy to power and solar-thermochemical utilization, and to compare the two utilization methods. The results show that the mismatching of solar energy and working fluid is the key factor limiting the efficiency of solar thermal utilization system. The results are expected to guide the solar thermal utilization technology.
关键词
能质系数 /
太阳能热利用 /
太阳能热发电 /
热化学反应
Key words
energy quality coefficient /
solar thermal utilization /
solar thermal power generation /
thermochemical reaction
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基金
国家自然科学基金“能源有序转化”基础科学中心项目（51888103）
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