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THE THERMOCHEMICAL SYSTEM Powerful and autonomous cold and/or heat production

CONTEXT

This system is particularly interesting not only for its heat management and cold production possibilities, but also for its autonomy. Based on the heat transfer of reversible chemical reactions, of the type of chloride ammonia, this process responds to environmental concerns whether it is about the protection of the ozone layer or the control of the greenhouse effect: it does not use any CFC, HCFC fluids or any other substitutes banned by international agreements. This process offers an alternative and different solution in order to satisfy the growing need of mobility, quality and reliability.

THERMOCHEMICAL SYSTEM

PHASE 1 : COLD PRODUCTION This process is based on the transformation by evaporation of liquid ammonia which then reacts with salts. The basic system comprises two elements, an evaporator containing liquid ammonia and a reactor containing reactive salts. By opening the valve, the ammonia stored in the evaporator evaporates which causes the cold production. The ammonia gas is fixed by the solid salts in the reactor. This reaction provokes heat production. This is phase 1. Evaporation temperature can reach -30°C and absorption temperature more than 100°C.
Reagent Salts + graphite Ammoniac gazeux Evaporation de l’ammoniac NH Ammoniac gazeux Evaporation de l’ammoniac NH Ammonia gas Matériau réactifSels + Graphite Matériau réactifSels + Graphite Evaporator Reactor Qb Qb Q synthesis Q Q synthèse synthèse Production de froidProduction de chaleur Production de froidProduction de chaleur Cold Production Heat Production Liquid ammonia Evaporation of ammonia NH Synthèse du solide MnCl Synthèse du solide MnCl Synthesis of solid MnCl 3 » 3 3 2 -(6NH 2 2 -(6NH -(6NH 3 ) 3 3 ) EvaporateurRéacteurAmmoniac Liquide ) EvaporateurRéacteurAmmoniac Liquide PHASE 2 : REGENERATION
Ammonia Condensation Condensation de l’ammoniacDésorption du gaz par le sel Gas desorption by salt Once the ammonia reserve consumed, the system is rechargeable. This is phase 2. The reactor contains the solid in which the ammonia is trapped in. It is sufficient to bring in heat in order to start the recharging phase of the system. The current applications dispose of a heating resistance which causes the desporption of ammonia gas which them will condensate into the evaporator. At the end of this phase, the cycle can restart again.
Qc Qc Heat sources : Electric (today) Q Q décomposition décomposition In development : Solar Heat recovery Gas burner

PRINCIPAL PROPERTIES

Autonomous cold and/or heat production without electricity Energy storage (of cold or heat) without time limitation Powerful energy restitution of cold and/or heat immediately after opening of the electro valve Simple functioning Robust thanks to its hermetic stainless steel envelope No moving pieces therefore little service and maintenance No noise and vibration Ecological (no CFC fluids or substitutes) Possibility to recharge by using renewable energies (solar energy, heat recovery…)
COLDWAY Lieu dit Patau- Route de Rivesaltes- 66 380 Pia. FRANCE Tel. : +33 (0)4-68-64-71-06 - Fax : +33 (0)4-68-64-71-07 www.coldway.fr email : info@coldway.fr SA au capital de 331 240 Euros - RCS Perpignan 439 462 623- TVA intracommunautaire : FR 62 439 462 623 International p atented s y stem