Experimental study on the performance of solar Rankine system using supercritical CO2
Experimental study on the performance of solar Rankine system using supercritical CO2
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DOI：
10.1016/j.renene.2007.01.003
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发表时间：
2007-12
期刊：
影响因子：
8.7
通讯作者：
Xin‐Rong Zhang;H. Yamaguchi;D. Uneno
中科院分区：
文献类型：
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作者：
Xin‐Rong Zhang;H. Yamaguchi;D. Uneno
采用超临界co2作为工作流体，对太阳能朗肯系统的性能进行了实验研究。太阳能朗肯系统试验机由真空太阳能集热器、泄压阀、热交换器、co2给水泵等组成。太阳能供电系统可以提供电力输出，也可以提供供热/制冷等。根据日、月、年实验数据对系统性能进行评估。结果表明，co2基太阳能集热器的集热效率为65.0% ~ 70.0%。其发电效率为8.78 ~ 9.45%，高于太阳能电池的8.20%。研究结果表明，太阳能驱动的二氧化碳朗肯系统在未来有可能被用作建筑物或其他场所的分布式能源供应系统。
An experimental study is carried out to investigate the performance of a solar Rankine system using supercritical CO2as a working fluid. The testing machine of the solar Rankine system consists of an evacuated solar collector, a pressure relief valve, heat exchangers and CO2feed pump, etc. The solar energy powered system can provide electricity output as well as heat supply/refrigeration, etc. The system performance is evaluated based on daily, monthly and yearly experiment data. The results obtained show that heat collection efficiency for the CO2-based solar collector is measured at 65.0–70.0%. The power generation efficiency is found at 8.78–9.45%, which is higher than the value 8.20% of a solar cell. The result presents a potential future for the solar powered CO2Rankine system to be used as distributed energy supply system for buildings or others.