DATA ARE PRESENTED ON THE CORROSION RESISTANCE OF METALLIC ALLOYS TO HYDRATED SALTS WHICH MAY BE UTILIZED AS PHASE CHANGE MATERIALS (PCM) FOR HEAT STORAGE. WITH THE SAME EXPERIMENTAL APPARATUS, TESTS ON THE THERMAL PERFORMANCE RELIABILITY OF PCM AFTER REPEATED THERMAL CYCLING WERE CARRIED OUT. COMMERCIALLY AVAILABLE LATENT HEAT STORAGE COMPONENTS CONTAINING THE FOLLOWING SALT HYDRATES WITH MELTING POINTS BETWEEN 15 DEGREES C AND 32 DEGREES C HAVE BEEN CONSIDERED: NA2SO4.10H2O, CACL2.6H2O, NA2SO4.1/2NACL.10H2O, NAOH.3,5H2O. THE CONTAINMENT MATERIALS TESTED WERE: STAINLESS STEEL, CARBON STEEL, AL ALLOYS AND CU. AS MANY AS 5650 THERMAL CYCLES INVOLVING REPEATED MELTING AND FREEZING OF THE PHASE CHANGE MATERIALS WERE CARRIED OUT. THE MOST CORROSION RESISTANT ALLOY TO ALL THE HYDRATED SALTS TESTED WAS STAINLESS STEEL. ONLY THE TWO COMMERCIAL CACL2.6H2O TESTED SHOWED GOOD THERMAL STABILITY AFTER REPEATED THERMAL CYCLING.
COEN Fernanda;
1995-03-15
JRC5618
https://publications.jrc.ec.europa.eu/repository/handle/JRC5618,
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