ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper deals with the preparation of silica microcapsules containing phase changeparaffin wax for thermal energy storage and the determination of their thermal properties. Thespherical microcapsule samples respectively containing two types of paraffin wax (with peak meltingtemperature of 29.3 °C (type P1) and 35.5 °C (type P2), and the fusion heat of 140 J/g (type P1) and153 J/g (type P2)) as core and chemically and thermally stable silica as shell, were prepared from O/Wemulsion systems in the presence of polyvinyl alcohol as stabilizer, and sorbitan monooleate andpoilyoxyethylene(20) sorbitan monooleate as emulsifiers. The silica shell formed via hydrolysis andcondensation from tetraethyl silicate with acetate acid as catalyst. The fusion heat of the two samplesis 101 J/g and 112 J/g respectively. Property of adaptable temperature of the as-made microcapsules ismeasured through a self-made cell model. The maximum difference between the temperature of thecell with PCM wallpaper and that of the cell with controlled wallpaper is about 1.1 °C
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.631.pdf
Permalink