Solar desalination is an important way to obtain fresh water. Nowadays, the all-glass evacuated tube with only one open end (blind pipe) is widely used in hot-water system, and the glass-metal evacuated tube is commonly used in solar trough concentrating system in medium temperature area. But both of them have drawbacks for seawater desalination. The former cannot quickly heat seawater to 100 °C, and the latter is expensive and fails to make full use of its high temperature advantage. A new design of a medium-temperature full-glass evacuated tube whose inner tube is wound by a spiral structure is proposed in to achieve a more cost-effective solar trough concentrating system for solar desalination. The sealing stress between inner and outer tube is analyzed and the thermal performance is tested. The results showed that the evacuated tube could withstand temperature of 250 °C, quickly heat seawater, and has good corrosion resistance and can keep a long-term vacuum. Such a tube enables seawater to flow directly without oil heat-exchange system, so it is a more promising solution for seawater desalination.
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June 2018
Research-Article
The Mechanical Analysis of an All-Glass Solar Evacuated Tube With Spiral Inner Tube for Seawater Desalination
Rao Kuang,
Rao Kuang
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: roykennan@163.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: roykennan@163.com
Search for other works by this author on:
Yankun Song,
Yankun Song
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: Yankun.l.song@gmail.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: Yankun.l.song@gmail.com
Search for other works by this author on:
Zijie Li,
Zijie Li
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: 1278048582@qq.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: 1278048582@qq.com
Search for other works by this author on:
Qiuzi Gu
Qiuzi Gu
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
Nanjing 210096, Jiangsu, China
e-mail: 742063534@qq.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou
,Nanjing 210096, Jiangsu, China
e-mail: 742063534@qq.com
Search for other works by this author on:
Rao Kuang
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: roykennan@163.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: roykennan@163.com
Yankun Song
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: Yankun.l.song@gmail.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: Yankun.l.song@gmail.com
Zijie Li
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: 1278048582@qq.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou,
Nanjing 210096, Jiangsu, China
e-mail: 1278048582@qq.com
Qiuzi Gu
Jiangsu Provincial Key Laboratory of Solar
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
Nanjing 210096, Jiangsu, China
e-mail: 742063534@qq.com
Energy Science and Technology,
School of Energy and Environment,
Southeast University,
2# Si Pai Lou
,Nanjing 210096, Jiangsu, China
e-mail: 742063534@qq.com
1Corresponding author.
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received July 1, 2017; final manuscript received January 17, 2018; published online March 13, 2018. Assoc. Editor: Gerardo Diaz.
J. Sol. Energy Eng. Jun 2018, 140(3): 031008 (5 pages)
Published Online: March 13, 2018
Article history
Received:
July 1, 2017
Revised:
January 17, 2018
Citation
Kuang, R., Song, Y., Li, Z., and Gu, Q. (March 13, 2018). "The Mechanical Analysis of an All-Glass Solar Evacuated Tube With Spiral Inner Tube for Seawater Desalination." ASME. J. Sol. Energy Eng. June 2018; 140(3): 031008. https://doi.org/10.1115/1.4039330
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