Paraffin-based phase-change nano-emulsion as well as preparation method and application thereof

Abstract

The invention discloses a paraffin-based phase-change nano-emulsion and a preparation method and application thereof.The preparation method comprises the steps that 10-30 parts of a paraffin phase-change energy storage material is prepared, 5-15 parts of a surfactant and 1-3 parts of a nucleating agent are added, the mixture is heated to 70-80 DEG C and mixed to be uniform, and an emulsion oil-phase material is prepared; under the stirring condition, 50-100 parts of deionized water or distilled water is added into the emulsion oil phase material, the temperature is kept at 70-80 DEG C, and emulsion is obtained; and cooling the emulsion to 25 DEG C to obtain the paraffin-based phase change nano-emulsion. The paraffin-based phase-change nano-emulsion provided by the invention is good in stability, small in supercooling degree, high in phase-change latent heat and wide in working temperature range, and can be used as a high-efficiency heat-dissipation cooling working medium; correspondingly, the invention provides a preparation method of the paraffin-based phase-change nano-emulsion which is simple in process, low in cost and easy to industrially amplify, and the phase-change nano-emulsion is applied to a thermal management system of a photovoltaic module, so that the surface temperature of the photovoltaic module is reduced, the photoelectric conversion efficiency of the photovoltaic module is improved, and waste heat is recycled. 本发明公开了一种石蜡基相变纳米乳液及其制备方法与应用，其中，制备方法包括步骤：配置10‑30份的石蜡相变储能材料，加入5‑15份的表面活性剂和1‑3份的成核剂，加热至70‑80℃混合均匀，制得乳液油相材料；在搅拌条件下，将50‑100份的去离子水或蒸馏水加入到所述乳液油相材料中并保持温度为70‑80℃，得到乳化液；将所述乳化液冷却至25℃后，得到石蜡基相变纳米乳液。本发明提供了一种稳定性好、过冷度小、相变潜热高、工作温度广，可用作高效散热冷却工质的石蜡基相变纳米乳液；相应地，提供一种工序简单、成本低廉、易于工业放大的该石蜡基相变纳米乳液的制备方法，并将相变纳米乳液应用于光伏组件的热管理系统中，降低其表面温度，提高其光电转化效率，回收利用余热。