Title: How to recuperate industrial waste heat beyond time and space

Authors: L. Zhang, T. Akiyama

Addresses: Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan. ' Centre for Advanced Research of Energy Conversion Materials, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan

Abstract: Any fossil fuel energy, after industrial utilisation such as combustion and electric generation, is finally emitted in the form of waste heat to the atmosphere. A database on waste heat revealed that a large amount of energy can be saved by reusing the high-temperature industrial waste heat efficiently. Thus, this paper introduces cutting-edge technologies for heat recovery by three promising methods, using latent heat, reaction heat, and a Thermoelectric Device (TED). Here, the advantages of a trans-heat container using a Phase Change Material (PCM), co-production using an endothermic reaction, and a TED using oxides are theoretically explained from the viewpoint of exergy loss minimisation, respectively.

Keywords: exergy loss; industrial waste heat; PCM; phase change materials; latent heat storage; trans-heat containers; TED; thermoelectric devices; heat recovery; reaction heat; endothermic reactions; oxides.

DOI: 10.1504/IJEX.2009.023999

International Journal of Exergy, 2009 Vol.6 No.2, pp.214 - 227

Available online: 22 Mar 2009 *

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