IDEAL PROCESS CONCEPTUAL DESIGN BASED ON THE EXERGETIC ANALYSIS. NEW COUPLINGS OF THERMOCHEMICAL DIPOLES FOR COLD PRODUCTION FROM LOW GRADE HEAT

摘要

The exergetic analysis of ideal processes gives parameters to be optimised to design processes converting or transforming inlet exergy as completely as possible. Thermochemical dipoles consist of two linked physico-chemical processes which produce or consume a working gas. These dipoles allow cold or heat production through the management of the physico-chemical processes involved. New couplings of such dipoles permits production of cold at low temperature (-22℃ for deep-freezing purpose) from low grade heat (at 70℃, coming from thermal wastes or produced by solar collectors for example). In such systems, inlet exergy is completely used and no excess cold or energy is produced.