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
How to recuperate industrial waste heat beyond time and space
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.