Phase change material emulsions (PCMEs) can be prepared in which a paraffin type phase change material (PCM) is dispersed as small particles in water by the action of a surfactant. Using the latent heat of PCM particles in the PCME, the PCME can be used as an efficient heat storage and transport medium. PCM particles in the PCME are stabilized by the action of a surfactant, but they irreversibly coalesce over time. When the PCM particles change from liquid to solid, they can also show large supercooling because of their small size. These problems must be overcome for PCMEs to be used as efficient thermal media. In this study, PCM particles are emulsified with a high-melting-point fat containing a hydrophobic group consisting of single bonds, in an attempt to overcome these problems. The high-melting-point fat exists as fat shell around PCM. The stability and supercooling characteristics of the PCM particles are investigated. The amount of fat affects the stability of the emulsion. Adding 1.0–5.0 wt% fat is the optimum amount for stabilizing the emulsion. The fat promotes the nucleation of the PCM particles, and the degree of supercooling is suppressed to 3.0 K. Furthermore, the latent heat retained by the emulsion emulsified with fat is about 10% larger than the value obtained by multiplying the latent heat of the PCM by the content of the PCM. These features indicate that PCME prepared with high-melting point fat is suitable as high performance thermal energy storage medium for thermal energy storage and transport system.

可以制备相变材料乳液（PCME），其中通过表面活性剂的作用将石蜡型相变材料（PCM）分散成小颗粒在水中。利用PCME中PCM颗粒的潜热，可以将PCME用作有效的热量存储和传输介质。PCME中的PCM颗粒通过表面活性剂的作用得以稳定，但随着时间的推移它们会不可逆地聚结。当PCM颗粒从液体变为固体时，由于尺寸小，它们也可能显示出较大的过冷度。为了将PCME用作有效的热介质，必须克服这些问题。在这项研究中，PCM颗粒被高熔点脂肪乳化，该脂肪含有一个由单键组成的疏水基团，试图克服这些问题。高熔点脂肪以PCM周围的脂肪壳形式存在。研究了PCM颗粒的稳定性和过冷特性。脂肪的量影响乳液的稳定性。添加1.0–5.0 wt％的脂肪是稳定乳液的最佳量。脂肪促进了PCM颗粒的成核，并且过冷度被抑制到3.0K。此外，脂肪乳化后的脂肪乳化的潜热比乘以PCM的潜热所获得的值大大约10％。通过PCM的内容。这些特征表明，用高熔点脂肪制备的PCME适合作为用于热能存储和输送系统的高性能热能存储介质。0重量％的脂肪是稳定乳液的最佳量。脂肪促进了PCM颗粒的成核，并且过冷度被抑制到3.0K。此外，脂肪乳化后的脂肪乳化的潜热比乘以PCM的潜热所获得的值大大约10％。通过PCM的内容。这些特征表明，用高熔点脂肪制备的PCME适合作为用于热能存储和输送系统的高性能热能存储介质。0重量％的脂肪是稳定乳液的最佳量。脂肪促进了PCM颗粒的成核，并且过冷度被抑制到3.0K。此外，脂肪乳化后的脂肪乳化的潜热比乘以PCM的潜热所获得的值大大约10％。通过PCM的内容。这些特征表明，用高熔点脂肪制备的PCME适合用作热能储存和输送系统的高性能热能储存介质。由脂肪乳化的乳液所保留的潜热比通过将PCM的潜热乘以PCM的含量所获得的值大大约10％。这些特征表明，用高熔点脂肪制备的PCME适合用作热能储存和输送系统的高性能热能储存介质。由脂肪乳化的乳液所保留的潜热比通过将PCM的潜热乘以PCM的含量所获得的值大大约10％。这些特征表明，用高熔点脂肪制备的PCME适合作为用于热能存储和输送系统的高性能热能存储介质。