EVALUATION OF PROPERTIES ON PARAFFIN OIL-IN-WATER EMULSION AS PHASE CHANGE SLURRY
Paraffin is an easily available organic phase change material. Paraffin oil can be dispersed in form of small droplet in water as an oil-in-water emulsion. The binary fluid has a high heat capacity in the phase change temperature range of the used paraffin. The subject of the presented work here, is the evaluation of the potential of paraffin oil-in-water emulsion for cold energy storage application. The commercial paraffin blend (mixtures of different saturated alkanes) Rubitherm RT10 with a melting temperature of 10℃ was used to make emulsion. The following properties have been investigated of the emulsion:·distribution of droplet size and the dependence between supercooling and droplet size,·thermal properties as the latent heat of fusion, the phase change temperature range and optimal operation temperature rang in practical application and·rheological properties.A series of samples with weight percentages from 15 to 50 ％ have been prepared. The properties of the emulsion in dependence of the paraffin concentration have been studied. The results show that an emulsion with a paraffin concentration up to 50 weight percent is an attractive candidate for cold storage application due to its high heat capacity.
Li HUANG Clemens Pollerberg Christian D(o)tsch
Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT Osterfelder Straβe 3, 46047 Oberhausen, Germany
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）