超声波优化相变蓄冷材料的研究进展

目的 为通过超声波方式解决过冷度高、蓄冷时间慢、稳定性差及成核慢等问题提供一些研究思路.方法 阐述3种常见的超声波装置(外置式、内置式、壁式)及其特性,介绍近年来国内外学者将超声波技术应用于相变蓄冷材料的研究进展,总结超声波对过冷度、二次结晶、成核速率、生长速率及稳定性等方面的影响.结果 超声波既能改善相变蓄冷材料的缺点又不影响其潜热,是相变蓄冷领域的一门新技术.结论 在实验研究基础上,推导建立超声波优化性能模型、寻找更加优化的超声方法、加强超声波的应用以及超声波技术对高温蓄冷材料的影响是今后研究的重点.

Research Progress on Optimization of Phase Change Cool Storage Materials by Ultrasonic

The work aims to provide some research ideas for solving the problems of high undercooling, slow cool storage time, poor stability and slow nucleation by ultrasonic method. Three kinds of common ultrasonic devices (external type, built-in type and wall type) and their characteristics were described. The research progress of ultrasonic technology applied to phase change cool storage materials by scholars at home and abroad in recent years was introduced. The influence of ultrasonic on undercooling, secondary crystallization, nucleation rate, growth rate and stability were summarized. Ultrasonic waves can improve the shortcomings of phase change cold storage materials without affecting their latent heat. It was a new technology applied in the field of phase change cold storage. On the basis of experimental research, deducing the establishment of an ultrasonic optimized performance model, finding a more optimized ultrasonic method, strengthening the application research of ultrasonic, and researching the high-temperature cold storage material by ultrasonic technology are the focus of future research.