Study on the improvement of supercooling and thermal properties of erythritol-based phase change energy storage materials

Ultrasound and nanoparticles are used to control the supercooling degree of erythritol-based phase change material. The effects particle type, ultrasonic power initial temperature on crystallization (SD), progress instability nanofluids investigated. Meanwhile, preparation scheme that satisfy both high-quality thermal performance economic value is explored. results show when concentrations 0.05%, 0.1%, 0.2% 0.3%, respectively, SD added with C decreased by 27.34%, 27.16%, 22.52% 12.90% (24.39%, 19.91%, 5.49% 1.22%), compared those Cu (ZnO) at same concentration. High-quality can be obtained addition amounts C, Cu, ZnO 0.2%, respectively. A nanofluid good effect high (low) concentration introduced ultrasound input. At temperatures 130 °C, 120 110 °C 100 fluid would worse after adding nanoparticles. With 150W, time 30 min 0.5%, ET best property optimal sample in economy produced.