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    Persistent, single-polarity energy harvesting from ambient thermal fluctuations using a thermal resonance device with thermal diodes

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    Type
    Article
    Authors
    Zhang, Ge
    Cottrill, Anton L.
    Koman, Volodymyr B.
    Liu, Albert Tianxiang
    Mahajan, Sayalee G.
    Piephoff, D. Evan
    Strano, Michael S.
    KAUST Grant Number
    OSR-2015-Sensors-2700
    Date
    2020-12
    Embargo End Date
    2021-10-08
    Permanent link to this record
    http://hdl.handle.net/10754/667435
    
    Metadata
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    Abstract
    There is a pressing need for durable energy harvesting techniques that are not limited by intermittency, and capable of persistent and continuous operation in a variety of environments. Our laboratory has previously identified ambient thermal fluctuations as potentially abundant, ubiquitous sources of such energy. In this work, we present a mathematical theory for the operation and design of a thermal resonator interfaced with optimized thermal diodes on its external boundaries with the environment. We show that such a configuration is potentially able to produce single polarity temperature difference drastically exceeding that of previously reported thermal resonators by a factor of 5. We further introduce an experimental testbed of mechanical thermal switches capable of mimicking thermal diodes with a possibility to tune thermal rectification in a broad range. The testbed allows us to identify additional design rules for our system dictated by material properties. Lastly, our theory establishes a generic performance metrics over thermal diodes available in the literature. The established framework will help to design novel thermal elements, build efficient thermal harvesting systems, and compose nonlinear thermal circuits.
    Citation
    Zhang, G., Cottrill, A. L., Koman, V. B., Liu, A. T., Mahajan, S. G., Piephoff, D. E., & Strano, M. S. (2020). Persistent, single-polarity energy harvesting from ambient thermal fluctuations using a thermal resonance device with thermal diodes. Applied Energy, 280, 115881. doi:10.1016/j.apenergy.2020.115881
    Sponsors
    The authors acknowledge the Office of Naval Research (ONR), under award N00014-16-1-2144, and King Abdullah University of Science and Technology (KAUST), under award OSR-2015-Sensors-2700, for their financial support regarding this project. The authors also acknowledge Gerald Hughes and Justin Raymond at MIT for their help with temperature data collection on MIT's campus. Lastly, we acknowledge Mark Derome at MIT Haystack Observatory for his help collecting the drone flight data. Correspondence and requests for materials should be addressed to M.S.S.
    Publisher
    Elsevier BV
    Journal
    Applied Energy
    DOI
    10.1016/j.apenergy.2020.115881
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0306261920313520
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.apenergy.2020.115881
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