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Contenu archivé le 2019-03-15

DESIGN AND CONSTRUCTION OF A NOVEL MODULAR CERAMIC GAS-GAS EXCHANGER ABLE TO STAND TEMPERATURES UP TO 1200 DEGREES C, FOR THE RECOVERY OF ENERGY FROM INDUSTRIAL FURNACES

Objectif



IN THE OIL, STEEL, ALUMINIUM, GLASS AND CERAMIC INDUSTRIES THERE IS A NEED FOR HIGH TEMPERATURE HEAT EXCHANGERS SUITABLE FOR OPERATION BETWEEN 1000 DEGREES C AND 1500 DEGREES C. THIS IS A TEMPERATURE RANGE WHERE MUCH OF THE PROCESS HEAT IS USED AND WHERE THE POTENTIAL FOR HEAT RECOVERY IS VERY LARGE. BERTIN, THEREFORE, DEVELOPED A GAS-GAS CERAMIC (SILICON CARBIDE) HEAT EXCHANGER FOR USE WITH EXHAUST GASES UP TO 1200 DEGREES C (WITH A FUTURE GOAL OF 1500 DEGREES C).

THIS HEAT EXCHANGER CAN BE ASSEMBLED IN THE FORM OF MODULES. IT HAS AN ESTIMATED COST OF 1.700 FF PER KWH RECOVERED, WHICH IS COMPARABLE TO METALLIC HEAT EXCHANGERS CURRENTLY AVAILABLE FOR USE AT MUCH LOWER TEMPERATURES (800 DEGREES C).

THE DESIGN OF THIS HEAT EXCHANGER IS OPTIMISED BOTH FOR CONVECTIVE AND RADIATIVE HEAT TRANSFER. FORCED CONVECTION IS MAXIMISED BY USING JET IMPINGEMENT (OBTAINED BY SPECIALLY DEVISED SLOTS) WITHIN THE CERAMIC PERFORATED PLATES OF THE HEAT EXCHANGER. THE TURBULENCE CREATED BY THE JET ENHANCES HEAT TRANSFER AND THIS PERMITS OVERALL HEAT TRANSFER COEFFICIENTS OF THE ORDER OF 15O W/M2K TO BE ACHIEVED. THE MODULE PRESSURE DROP IS 200 TO 300 PASCALS (AIR SIDE).

A SINGLE MODULE HAS BEEN CONSTRUCTED AND TESTED IN THE LABORATORY. A SECOND GENERATION HEAT EXCHANGER HAS BEEN DESIGNED IN COLLABORATION WITH CERAVER. THIS IS COMPOSED OF 15 MODULES OF 35 KW EACH, THUS PROVIDING AN INDUSTRIAL SCALE HEAT EXCHANGER OF 0.5 MW. THIS IS TO BE CONSTRUCTED AND TESTED.

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Coordinateur

Bertin & Cie
Contribution de l’UE
Aucune donnée
Adresse
59 rue Pierre Curie Zone Industrielle des Gatines
78373 Plaisir
France

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Participants (1)