Heat flow control and energy recovery using CO2 in double glass arrangements

Ron Zevenhoven*, Martin Fält

*Corresponding author for this work

    Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

    1 Citation (Scopus)

    Abstract

    The interaction of gases such as carbon dioxide (CO2) and other so-called participating gases with thermal infra-red (TIR) radiation is one of the mechanisms behind global warming and climate change. The noticeable effect this apparently gives at atmospheric concentrations of around 400 ppmv can be made use of in technical systems where pure (and pressurized) CO2 is confined in, for example, a double glass arrangement. Depending on pressure, temperature, gas composition and path length a certain "optical thickness" for TIR radiation is obtained that can be used to decrease or increase heat flows, or create temperature differences. The latter would allow for power production using, for example, a Stirling engine. Of great importance also is the temperature difference between ground-level surroundings and the sky. With significant amounts of electric power being used for air-conditioning, heating or cooling purposes a smart window set-up that makes use of the interference of TIR radiation with participating gases may result in significant reductions in energy use and costs. Typical applications can be found in residential and office building windows or a glass roof that covers large building structures like railway stations or parking areas. Besides glass, plastics may be used as window material. The purpose of this paper is to present the potential of energy recovery from TIR radiation using most importantly earth-to-space radiation of long wavelengths (> 4 μm), to be distinguished from incoming solar radiation at shorter wavelengths (< 4 μm). Most relevant here is the TIR absorption band for CO2 around a wavelength of 15 μm. Note also that unlike solar irradiation the earth-to-space radiation is not limited to daytime and cloudless skies. Finally, some examples for technical system lay-out and performance are given. This gives an introduction by the paper by Fält and Zevenhoven submitted to this conference (Fält and Zevenhoven, 2010).

    Original languageEnglish
    Title of host publicationASME 2010 4th International Conference on Energy Sustainability, ES 2010
    Pages201-206
    Number of pages6
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA4 Article in a conference publication
    EventASME 2010 4th International Conference on Energy Sustainability, ES 2010 - Phoenix, AZ, United States
    Duration: 17 May 201022 May 2010

    Publication series

    NameASME 2010 4th International Conference on Energy Sustainability, ES 2010
    Volume2

    Conference

    ConferenceASME 2010 4th International Conference on Energy Sustainability, ES 2010
    CountryUnited States
    CityPhoenix, AZ
    Period17/05/1022/05/10

    Keywords

    • Heat
    • energy recovery

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