添加固体颗粒提高太阳能集热管内导热油光热转换性能
利用太阳辐照玻璃真空管加热导热油的试验装置,试验研究了添加不同种类和不同质量分数的固体颗粒对导热油光热转换特性的影响,通过测量闷晒温度和闷晒太阳辐照量间接比较了3种试验流体的热性能;理论分析了固体颗粒对导热油吸热与对流传热的强化机理。结果表明：添加铜箔颗粒可提高导热油平均温度14℃;同等试验工况石墨-油分别与铜箔-油和铝箔-油的最大温差达3.3和7℃;质量分数3%-3.2%的铜箔颗粒对提高导热油闷晒温度较有利,增大含量对光热转换的强化效果不明显。石墨-油和铜箔-油显示出良好的光热转换性能。该研究为导热油在太阳能热发电和热管热水器领域的应用提供科学参考。...
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| Published in | 农业工程学报 Vol. 29; no. 22; pp. 206 - 211 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
大连理工大学能源与动力学院，大连116024%大连理工大学能源与动力学院,大连,116024%河南省科学院能源研究所有限公司,郑州,450008%河南农业大学理学院,郑州,450002
2013
河南省科学院能源研究所有限公司，郑州 450008 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.3969/j.issn.1002-6819.2013.22.024 |
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| Abstract | 利用太阳辐照玻璃真空管加热导热油的试验装置,试验研究了添加不同种类和不同质量分数的固体颗粒对导热油光热转换特性的影响,通过测量闷晒温度和闷晒太阳辐照量间接比较了3种试验流体的热性能;理论分析了固体颗粒对导热油吸热与对流传热的强化机理。结果表明：添加铜箔颗粒可提高导热油平均温度14℃;同等试验工况石墨-油分别与铜箔-油和铝箔-油的最大温差达3.3和7℃;质量分数3%-3.2%的铜箔颗粒对提高导热油闷晒温度较有利,增大含量对光热转换的强化效果不明显。石墨-油和铜箔-油显示出良好的光热转换性能。该研究为导热油在太阳能热发电和热管热水器领域的应用提供科学参考。 |
|---|---|
| AbstractList | TK519%TK124; 利用太阳辐照玻璃真空管加热导热油的试验装置，试验研究了添加不同种类和不同质量分数的固体颗粒对导热油光热转换特性的影响，通过测量闷晒温度和闷晒太阳辐照量间接比较了3种试验流体的热性能；理论分析了固体颗粒对导热油吸热与对流传热的强化机理。结果表明：添加铜箔颗粒可提高导热油平均温度14℃；同等试验工况石墨-油分别与铜箔-油和铝箔-油的最大温差达3.3和7℃；质量分数3%～3.2%的铜箔颗粒对提高导热油闷晒温度较有利，增大含量对光热转换的强化效果不明显。石墨-油和铜箔-油显示出良好的光热转换性能。该研究为导热油在太阳能热发电和热管热水器领域的应用提供科学参考。 利用太阳辐照玻璃真空管加热导热油的试验装置,试验研究了添加不同种类和不同质量分数的固体颗粒对导热油光热转换特性的影响,通过测量闷晒温度和闷晒太阳辐照量间接比较了3种试验流体的热性能;理论分析了固体颗粒对导热油吸热与对流传热的强化机理。结果表明：添加铜箔颗粒可提高导热油平均温度14℃;同等试验工况石墨-油分别与铜箔-油和铝箔-油的最大温差达3.3和7℃;质量分数3%-3.2%的铜箔颗粒对提高导热油闷晒温度较有利,增大含量对光热转换的强化效果不明显。石墨-油和铜箔-油显示出良好的光热转换性能。该研究为导热油在太阳能热发电和热管热水器领域的应用提供科学参考。 |
| Abstract_FL | Adding solid suspended particles into liquid is one of the effective methods to enhance heat transfer properties, and is discussed widely. The fluids of added solid particles have excellent thermal transport properties and spectral absorption properties, and can be used as a working fluid for a direct absorption solar collector to improve the collection efficiency. However, in the research on photo-thermal properties effect of solid suspended particles on heat conduction oil (HTF), the existing literature is reported less. Therefore, this paper aimed at determining clearly the influence of solid particles on solar radiation absorption properties of HTF. In this work, the photo-thermal performance tests of HTF were conducted in all-glass evacuated solar collector tubes under solar irradiation. Three experimental fluids (carbon powder-oil, copper foil-oil, and aluminum foil-oil) with different content were prepared. The spectral absorption properties and photo-thermal conversion properties were compared among the three experimental fluids through measuring the insolation temperature and solar radiation. Meanwhile, the temperature tests of water、HTF, and copper foil-oil were performed under solar irradiation. The effects of three solid particles (carbon, copper, and aluminum) and copper foil particles with different mass fraction (0.8%, 1.6%, 3.2%, and 6.4%) on the temperature rise of HTF were studied respectively. In order to evaluate the heat start-up performance of experimental fluids, the effects of solar radiation on temperature rise were also investigated by measuring the amount of solar irradiation. In addition, the mechanism of the spectral absorption enhancement and convective heat transfer enhancement of solid particles on HTF were analyzed. The research results showed that adding solid particles can improve the temperature of HTF under solar irradiation. The copper foil particles can improve the average insolation temperature by 14℃. The insolation temperature of carbon powder-oil was the highest, it was 3.3℃higher than that of copper foil-oil and 7℃higher than that of aluminum foil-oil in the same mass fraction. With particles content Increasing from 0.8%-3.2%, the insolation temperature of HTF increases from 98℃to 103.8℃. However, while the mass fraction was more than 6.4%, the temperature rise was not significant. The suitable mass fraction of copper foil particles is 3%-3.2%. The temperature of experimental fluids rises with the increase of solar radiation intensity, and when the solar radiation intensity increases to 600 W/m2, the temperature increased sharply. The average temperature of carbon powder-oil and copper foil-oil were higher by 13 and 8℃than that of aluminum foil-oil. It can be seen that the photo-thermal conversion properties of carbon powder-oil and copper foil-oil showed better than that of aluminum foil-oil in the insolation experiment. |
| Author | 高林朝 沈胜强 郝庆英 刘存祥 岳峰 |
| AuthorAffiliation | 河南省科学院能源研究所有限公司,郑州450008 大连理工大学能源与动力学院,大连116024 河南农业大学理学院,郑州450002 |
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| Author_FL | Yue Feng Shen Shengqiang Hao Qingying Liu Cunxiang Gao Linchao |
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| Keywords | thermal effects heat conduction oil solid particles 热效应 导热油 太阳辐射 温度 photo-thermal properties 固体颗粒 太阳能集热管 solar irradiation temperature solar collector tube 光热特性 |
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| Notes | 11-2047/S Gao Linchao, Shen Shengqiang, Hao Qingying, Liu Cunxiang, Yue Feng （1. Energy Research Institute of Henan Academy of Sciences, Zhengzhou 450008, China; 2. School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China; 3. College of Sciences, Henan Agricultural University Zhengzhou 450002, China） solar irradiation; thermal effects; temperature; solar collector tube; heat conduction oil; solid particles; photo-thermal properties Adding solid suspended particles into liquid is one of the effective methods to enhance heat transfer properties, and is discussed widely. The fluids of added solid particles have excellent thermal transport properties and spectral absorption properties, and can be used as a working fluid for a direct absorption solar collector to improve the collection efficiency. However, in the research on photo-thermal properties effect of solid suspended particles on heat conduction oil（HTF）, the existing literature is reported less. Therefore, this paper aime |
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| Publisher | 大连理工大学能源与动力学院，大连116024%大连理工大学能源与动力学院,大连,116024%河南省科学院能源研究所有限公司,郑州,450008%河南农业大学理学院,郑州,450002 河南省科学院能源研究所有限公司，郑州 450008 |
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| SubjectTerms | 光热特性 固体颗粒 太阳能集热管 太阳辐射 导热油 温度 热效应 |
| Title | 添加固体颗粒提高太阳能集热管内导热油光热转换性能 |
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