Gelled graphite/gelatin composites for latent heat cold storage
authors Vitorino, N; Abrantes, JCC; Frade, JR
nationality International
journal APPLIED ENERGY
author keywords Shape stabilized composites; Phase change materials; Cold storage; Thermal properties; Fusion kinetics
keywords THERMAL-ENERGY STORAGE; PHASE-CHANGE MATERIALS; COLLAGEN
abstract Aqueous suspensions of graphite were shape stabilized by the additions of collagen and characterized as phase change materials for cold storage with enhanced thermal conductivity. Collagen addition stabilized the graphite suspensions in aqueous media without requirements for additional stabilizers or previous functionalization. Gelation at room temperatures prevented sedimentation of graphite particles. SEM of dried samples confirmed nearly random distribution of graphite particles. These gelled suspensions with enhanced thermal conductivity were tested for latent heat cold storage. The thermal response was retained upon repeated phase change cycles, and impedance spectroscopy was used to monitor these cycles. The response time upon phase change was somewhat longer than predicted by taking into account the values of thermal diffusivity and the estimated value of Stefan number, probably due to significant interfacial resistance to heat transfer, combined with discontinuities caused by volume expansion upon phase change. (C) 2012 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0306-2619
year published 2013
volume 104
beginning page 890
ending page 897
digital object identifier (doi) 10.1016/j.apenergy.2012.12.014
web of science category Energy & Fuels; Engineering, Chemical
subject category Energy & Fuels; Engineering
unique article identifier WOS:000316152700086
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 7.900
5 year journal impact factor 7.888
category normalized journal impact factor percentile 94.857
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg