Article

Steam generation under one sun enabled by a floating structure with thermal concentration

  • Nature Energy 1, Article number: 16126 (2016)
  • doi:10.1038/nenergy.2016.126
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Abstract

Harvesting solar energy as heat has many applications, such as power generation, residential water heating, desalination, distillation and wastewater treatment. However, the solar flux is diffuse, and often requires optical concentration, a costly component, to generate the high temperatures needed for some of these applications. Here we demonstrate a floating solar receiver capable of generating 100 C steam under ambient air conditions without optical concentration. The high temperatures are achieved by using thermal concentration and heat localization, which reduce the convective, conductive and radiative heat losses. This demonstration of a low-cost and scalable solar vapour generator holds the promise of significantly expanding the application domain and reducing the cost of solar thermal systems.

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References

  1. 1.

    ,  & Solar thermal technologies as a bridge from fossil fuels to renewables. Nat. Clim. Change 5, 1007–1013 (2015).

  2. 2.

    et al. Science and technology for water purification in the coming decades. Nature 452, 301–310 (2008).

  3. 3.

    et al. The potential of solar-driven humidification-dehumidification desalination for small-scale decentralized water production. Renew. Sustain. Energy Rev. 14, 1187–1201 (2010).

  4. 4.

     & The future of seawater desalination: energy, technology, and the environment. Science 333, 712–717 (2011).

  5. 5.

    ,  & Solar assisted sea water desalination: a review. Renew. Sustain. Energy Rev. 19, 136–163 (2013).

  6. 6.

    ,  & Present status of solar distillation. Sol. Energy 75, 367–373 (2003).

  7. 7.

    , , ,  & Nanoparticle Heat Transfer Fluid Flow (CRC Press, 2012).

  8. 8.

    et al. Concentrating solar power. Chem. Rev. 115, 12797–12838 (2015).

  9. 9.

    et al. Roadmap on optical energy conversion. J. Opt. 18, 073004 (2016).

  10. 10.

    et al. Solar concentration of 50,000 achieved with output power approaching 1 kW. J. Sol. Energy Eng. 118, 141–145 (1996).

  11. 11.

     & Solar-thermal powered desalination: its significant challenges and potential. Renew. Sustain. Energy Rev. 48, 152–165 (2015).

  12. 12.

    ,  & Performance of a direct steam generation solar thermal power plant for electricity production as a function of the solar multiple. Sol. Energy 83, 679–689 (2009).

  13. 13.

    et al. Solar vapor generation enabled by nanoparticles. ACS Nano 7, 29–42 (2013).

  14. 14.

    et al. Nanoparticle-mediated, light-induced phase separations. Nano Lett. 15, 7880–7885 (2015).

  15. 15.

    et al. Compact solar autoclave based on steam generation using broadband light-harvesting nanoparticles. Proc. Natl Acad. Sci. USA 110, 11677–11681 (2013).

  16. 16.

    et al. A bioinspired, reusable, paper-based system for high-performance large-scale evaporation. Adv. Mater. 27, 2768–2774 (2015).

  17. 17.

    et al. Evaporation: bio-inspired evaporation through plasmonic film of nanoparticles at the air-water interface. Small 10, 3233–3233 (2014).

  18. 18.

    ,  & Plasmonic materials for energy: from physics to applications. Mater. Today 16, 375–386 (2013).

  19. 19.

    et al. Plasmonic biofoam: a versatile optically active material. Nano Lett. 16, 609–616 (2015).

  20. 20.

    et al. The impact of surface chemistry on the performance of localized solar-driven evaporation system. Sci. Rep. 5, 13600 (2015).

  21. 21.

    , ,  & Super-heating and micro-bubble generation around plasmonic nanoparticles under cw illumination. J. Phys. Chem. C 118, 4890–4898 (2014).

  22. 22.

    , , ,  & Comparison of vapor formation of water at the solid/water interface to colloidal solutions using optically excited gold nanostructures. ACS Nano 8, 1439–1448 (2014).

  23. 23.

    et al. Flexible thin-film black gold membranes with ultrabroadband plasmonic nanofocusing for efficient solar vapour generation. Nat. Commun. 6, 10103 (2015).

  24. 24.

    et al. Enhancing localized evaporation through separated light absorbing centers and scattering centers. Sci. Rep. 5, 17276 (2015).

  25. 25.

    Ernst & Young Inc. Assessment of the Local Manufacturing Potential for Concentrated Solar Power (CSP) Projects (The World Bank, 2011).

  26. 26.

    , ,  & Power Tower Technology Roadmap and Cost Reduction Plan (Sandia National Labs, 2011).

  27. 27.

    ,  & Solar Heat Worldwide (Solar Heating and Cooling Programme, International Energy Agency, 2012).

  28. 28.

    et al. Solar steam generation by heat localization. Nat. Commun. 5, 4449 (2014).

  29. 29.

    et al. Multifunctional porous graphene for high-efficiency steam generation by heat localization. Adv. Mater. 27, 4302–4307 (2015).

  30. 30.

    , , ,  & Floatable, self-cleaning, and carbon-black-based superhydrophobic gauze for the solar evaporation enhancement at the air–water interface. ACS Appl. Mater. Interface 7, 13645–13652 (2015).

  31. 31.

    et al. Volumetric solar heating of nanofluids for direct vapor generation. Nano Energy 17, 290–301 (2015).

  32. 32.

    et al. 3D self-assembly of aluminium nanoparticles for plasmon-enhanced solar desalination. Nat. Photon. 10, 393–398 (2016).

  33. 33.

    et al. Self-assembly of highly efficient, broadband plasmonic absorbers for solar steam generation. Sci. Adv. 2, e1501227 (2016).

  34. 34.

    et al. Solar evaporation enhancement using floating light-absorbing magnetic particles. Energy Environ. Sci. 4, 4074–4078 (2011).

  35. 35.

    , , ,  & Hydrophobic light-to-heat conversion membranes with self-healing ability for interfacial solar heating. Adv. Mater. 27, 4889–4894 (2015).

  36. 36.

    , ,  & A review of cermet-based spectrally selective solar absorbers. Energy Environ. Sci. 7, 1615–1627 (2014).

  37. 37.

     & Thermosiphon circulation in solar water heaters incorporating evacuated tubular collectors and a novel water-in-glass manifold. Sol. Energy 34, 13–18 (1985).

  38. 38.

     & Performance of water-in-glass evacuated tube solar water heaters. Sol. Energy 83, 49–56 (2009).

  39. 39.

    Theoretical Study of Interphase Mass Transfer (Columbia Univ., 1953).

  40. 40.

     & Review of researches and developments on solar stills. Desalination 276, 1–12 (2011).

  41. 41.

     & Performance analysis of solar stills based on various factors affecting the productivity: a review. Renew. Sustain. Energy Rev. 15, 1294–1304 (2011).

  42. 42.

    The maximum efficiency of single-effect solar stills. Sol. Energy 15, 205–217 (1973).

  43. 43.

    Floating solar still. US patent no. US2820744 A (1958).

  44. 44.

    Inflatable floating solar still with capillary feed. US patent no. US2412466 A. (1946).

  45. 45.

    ,  & Evaporative heat loss and heat transfer for open- and closed-cycle systems of a floating tilted wick solar still. Desalination 180, 291–305 (2005).

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Acknowledgements

We thank D. Kraemer with help operating the solar simulator, and T. McClure and the Center for Materials Science and Engineering for the use of the FTIR. This work was partially supported by the Cooperative Agreement between the Masdar Institute of Science and Technology (Masdar Institute), Abu Dhabi, UAE and the Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts, USA—Reference 02/MI/MIT/CP/11/07633/GEN/ G/00 (for the steam generation). We gratefully acknowledge funding support from the MIT S3TEC Center, an Energy Frontier Research Center funded by the Department of Energy, Office of Science, Basic Energy Sciences under Award # DE-FG02-09ER46577 (for the experimental facility). We also thank Z. Lu and E. Wang for their help in understanding the evaporation processes.

Author information

Affiliations

  1. Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA

    • George Ni
    • , Gabriel Li
    • , Svetlana V. Boriskina
    •  & Gang Chen
  2. Department of Mechanical and Materials Engineering, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates

    • Hongxia Li
    • , Weilin Yang
    •  & TieJun Zhang

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Contributions

G.N., S.V.B. and G.C. developed the concept. G.N. and G.L. conducted the experiments. G.N., H.L., W.Y. and T.Z. prepared the models. G.N., S.V.B. and G.C. wrote the paper. G.C. directed the overall research.

Competing interests

The authors have applied for a patent for this technology, but have no other competing interests.

Corresponding author

Correspondence to Gang Chen.

Supplementary information

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    Supplementary Information

    Supplementary Methods, Supplementary Figures 1–10, Supplementary Notes 1–8, Supplementary References.