【摘 要】
：
This study aims to develop a stable paraffin-based phase change material (PCM)/water emulsion for the solar heating storage applications.An n-Octacosane/water emulsion was prepared and some nano-parti
【机 构】
：
Department of Building Service Engineering,The Hong Kong Polytechnic University,Kowloon,Hong Kong,Ch
论文部分内容阅读
This study aims to develop a stable paraffin-based phase change material (PCM)/water emulsion for the solar heating storage applications.An n-Octacosane/water emulsion was prepared and some nano-partieles were dispersed in the emulsion as stabilizers to enhance the stability.The effects of different emulsification systems on the stability of emulsions were evaluated by the freeze-thaw method.There appeared to be a minimum effective concentration of both the emulsifier and the stabilizer to maintain the stable emulsion.Thermal analysis by differential scanning calorimeter (DSC) indicated that the degree of supercooling of the emulsion was low.
其他文献
Acid mine drainage (AMD) contains high concentration of metal ions, and it will be easily formed in the presence of Acidithiobacillus ferrooxidans(Li et al., 2009).Quorum sensing is a cell-to-cell com
The high temperature chloridizing roasting is one of useful methods to separate nonferrous metals from pyrite cinder and metallurgy slag.However, as one kind of main nonferrous metals in pyrite cinder
The increasing atmospheric CO2 concentration has led to concerns about global warming[1].Therefore,it is imperative for the societies to face with the serious demand for minimization of CO2 emission.S
This paper investigated preparation process of briquette by using starch and bentonite as composite binder.It also studied the impact of pulverized coal particle size, coking particle size, compacting
The mainstream technology for leaching gold from gold ore is still leaching in aqueous alkaline cyanide solution.However, when copper minerals are present in the gold ore, high levels of free cyanide
Bioleaching is based on the ability of microorganisms that can convert insoluble metals to soluble ones through the reactions of biological oxidation or complexation process (Watling et al., 2006;Tich
In this paper, direct contact membrane distillation (DCMD) was first used to recover water and to concentrate the acid and metal values in mining waste and process solutions, and solvent extraction (S
Li-ion batteries (LIBs) are attracting more and more attentions in terms of high energy/power density,environmental benignity and good safety[1-2].Comparison with LiFePO4, LiMnPO4 possesses a higher v
To meet the ever-increasing demand for high energy/power anodes in lithium ion batteries (LIBs),considerable attention has been focused on transition metal oxides (MO, M=Fe, Co, Ni, Mn, etc) [1-3].Mn3
本文开展高温熔融盐锯齿板相变换热器的二维非稳态数值模拟研究.在考虑自然对流的情况下,对比研究m-PCMs (multiple phase change material)排列方向、相变温差以及HTF(heat transfer fluid)进口工况对释热性能的影响.模拟结果表明,m-PCMs反向排列优于正向排列；进口温度(1.41＜Ste＜1.68)对释热影响不大,但是流速(91＜Re＜364)对