New Criteria to Characterize the Waste Heat Recovery

Michel Feidt, Monica Costea, Renaud Feidt, Quentin Danel and Christelle Périlhon
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Michel Feidt: Laboratory of Energetics, Theoretical and Applied Mechanics (LEMTA), URA CNRS 7563, University of Lorraine, 54518 Vandoeuvre-lès-Nancy, France
Monica Costea: Department of Engineering Thermodynamics, University POLITEHNICA of Bucharest, 060042 Bucharest, Romania
Renaud Feidt: INVIVO Consulting, 13 rue de Clermont, 44000 Nantes, France
Quentin Danel: Laboratoire de Chimie Moléculaire et Génie des Procédés Chimiques et Energétiques (CMGPCE), Conservatoire National des Art et Métiers, 75003 Paris, France
Christelle Périlhon: Laboratoire de Chimie Moléculaire et Génie des Procédés Chimiques et Energétiques (CMGPCE), Conservatoire National des Art et Métiers, 75003 Paris, France

Energies, 2020, vol. 13, issue 4, 1-15

Abstract: Waste heat recovery is an actual goal. The best way to valorize waste heat is to use it directly with the appropriate level of temperature. If the temperature level is insufficient, many reverse machine configurations are available in order to obtain the appropriate conditions (the most known are heat pumps and heat transformers). Finally, the remaining unused heat could be converted to any noble form of energy (mechanical, electrical essentially). We propose here to examine, with a new point of view, the thermomechanical conversion limit of waste heat. This limit corresponds to adiabatic conversion for an endo-reversible Carnot engine, with a perfect thermal contact at the atmospheric sink (supposed infinite). The Carnot–Chambadal model version is applied to latent and sensible heat recovery cases. The results associated with these two cases differ fundamentally. Comments are provided on the two studied cases, and new criteria to characterize the corresponding waste heat recovery are proposed.

Keywords: waste heat; recovery; criteria; energy; exergy; maximum power; ratios (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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