The thermal properties of a phase change material (PCM), together with its environmental health risks and natural abundance are important aspects to consider when choosing one for a domestic application. In this work, a soybean oil derivative, which comes from one of the most abundant crops on Earth, is proposed as PCM. A heat transfer model was developed to compare the performance of the proposed PCM, under the same boundary and initial conditions, with other materials reported in literature that have well-known disadvantages in terms of flammability, renewability, abundance and environmental care. Results showed that its performance was as good as theirs. Nanocapsules of the PCM coated with TiO₂ were prepared and characterized physical, thermal and morphologically. Thermal studies were carried out in a device designed and constructed simulating a water heater, and a reduction of about 70% of the PCM phase thermal resistance due to the TiO₂ shell was observed. Furthermore, the calculated thermal energy stored in the device filled with nanoencapsulated PCM was 10.6% higher with respect to the blank, and the total cooling time of the water was increased by over 18% thanks to the PCM.

相变材料（PCM）的热特性及其环境健康风险和自然丰度是选择家用应用时要考虑的重要方面。在这项工作中，提出了一种来自地球上最丰富的作物之一的大豆油衍生物作为PCM。开发了一种传热模型，以比较所提出的PCM在相同边界和初始条件下的性能，以及文献中报道的在可燃性，可再生性，丰度和环境保护方面具有众所周知的缺点的其他材料。结果表明它的性能与他们的一样好。TiO ₂包覆的PCM纳米胶囊制备并表征了物理，热和形态。在模拟热水器的设备设计和制造中进行了热研究，观察到由于TiO ₂壳层，PCM相热阻降低了约70％。此外，计算出的存储在装有纳米胶囊PCM的设备中的热能相对于毛坯要高10.6％，并且由于PCM，水的总冷却时间增加了18％以上。