TY - JOUR
T1 - Effect of Silver Nanoparticles on the Thermal Properties of Sodium Acetate Trihydrate
AU - Garay-Ramírez, B.
AU - Cruz-Orea, A.
AU - San Martín-Martínez, E.
N1 - Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2015/6/22
Y1 - 2015/6/22
N2 - Sodium acetate trihydrate (SAT) is used as a phase change material (PCM) because of its high latent heat of fusion. Mixtures were prepared with SAT, a blend of the polymer sodium carboxymethil cellulose (CMC) and silica gel, silver nanoparticles (AgNPs), and anhydrous sodium sulfate to form a composite-PCM (c-PCM) based on SAT; the relative proportions of CMC/silica gel in the blend and AgNP content were varied according to a central composite experimental design. The thermal properties were determined for raw SAT, CMC, Na2SO4, and c-PCM samples. The thermal effusivity (es) of samples was evaluated by the inverse photopyroelectric technique. The thermal diffusivity (Ds) was obtained for samples by the open photoacoustic cell technique. The thermal conductivity (ks) was calculated from the obtained es and Ds values. To assess the thermal performance of the c-PCM compared to raw SAT, samples were studied through differential scanning calorimetry which served to determine the latent heat recovery (LHR). Properties es, Ds, ks, and LHR were analyzed by response surface methodology and compared. The SAT-based c-PCM was found to be more thermally conductive than raw SAT. The best LHR with good thermal diffusivity and thermal conductivity was identified in the region of the central composite experimental design with medium–low AgNPs and higher proportions of CMC in the polymer blend.
AB - Sodium acetate trihydrate (SAT) is used as a phase change material (PCM) because of its high latent heat of fusion. Mixtures were prepared with SAT, a blend of the polymer sodium carboxymethil cellulose (CMC) and silica gel, silver nanoparticles (AgNPs), and anhydrous sodium sulfate to form a composite-PCM (c-PCM) based on SAT; the relative proportions of CMC/silica gel in the blend and AgNP content were varied according to a central composite experimental design. The thermal properties were determined for raw SAT, CMC, Na2SO4, and c-PCM samples. The thermal effusivity (es) of samples was evaluated by the inverse photopyroelectric technique. The thermal diffusivity (Ds) was obtained for samples by the open photoacoustic cell technique. The thermal conductivity (ks) was calculated from the obtained es and Ds values. To assess the thermal performance of the c-PCM compared to raw SAT, samples were studied through differential scanning calorimetry which served to determine the latent heat recovery (LHR). Properties es, Ds, ks, and LHR were analyzed by response surface methodology and compared. The SAT-based c-PCM was found to be more thermally conductive than raw SAT. The best LHR with good thermal diffusivity and thermal conductivity was identified in the region of the central composite experimental design with medium–low AgNPs and higher proportions of CMC in the polymer blend.
KW - Latent heat recovery
KW - Polymer blend
KW - Response surface methodology
KW - Silver nanoparticles
KW - Sodium acetate trihydrate (SAT)
KW - Thermal conductivity
KW - Thermal diffusivity
KW - Thermal effusivity
UR - http://www.scopus.com/inward/record.url?scp=84931561821&partnerID=8YFLogxK
U2 - 10.1007/s10765-015-1837-z
DO - 10.1007/s10765-015-1837-z
M3 - Artículo
SN - 0195-928X
VL - 36
SP - 1164
EP - 1172
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
IS - 5-6
ER -