Approximately two thirds of the world's energy consumption is wasted as heat. In an attempt to reduce heat losses, heat exchangers are utilized to recover some of the energy. A unique graphite foam developed at the Oak Ridge National Laboratory (ORNL) and licensed to Poco Graphite, Inc., promises to allow for novel, more efficient heat exchanger designs. This graphite foam, Figure 1, has a density between 0.2 and 0.6 g/cm3 and a bulk thermal conductivity between 40 and 187 W/m·K. Because the foam has a very accessible surface area (> 4 m2/g) and is open celled, the overall heat transfer coefficients of foam-based heat exchangers can be up to two orders of magnitude greater than conventional heat exchangers. As a result, foam-based heat exchangers could be dramatically smaller and lighter.


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    Titel :

    Heat Exchangers for Heavy Vehicles Utilizing High Thermal Conductivity Graphite Foams


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    McMillan, April (Autor:in) / Klett, James (Autor:in) / Ott, Ron (Autor:in)

    Kongress:

    Government/Industry Meeting ; 2000



    Erscheinungsdatum :

    19.06.2000




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Heat Exchangers for Heavy Vehicles Utilizing High Thermal Conductivity Graphite Foams

    Klett, J. / Ott, R. / McMillan, A. et al. | British Library Conference Proceedings | 2000


    Heat exchangers based on high thermal conductivity graphite foam

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    Utilizing High Thermal Conductivity Graphite Foam to Improve Heat Exchanger Performance

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    Utilizing high thermal conductivity graphite foam to improve heat exchanger performance

    Wiechmann, Lee W. / Vrable, Daniel L. / Klett, James W. | TIBKAT | 2001