工业用谷电低温蓄冷是电力需求侧管理的一项有效措施,但现有蓄冷材料的过冷度太高,导致制冷机组的能效比太低。文中在Ba Cl2-H2O共晶盐水溶液中添加Ti O2纳米粒子,制备成悬浮稳定的Ti O2-BaC l2-H2O纳米流体蓄冷材料,在蓄冷装置中对Ti O2-Ba Cl2-H2O纳米流体与Ba Cl2-H2O共晶盐水溶液进行蓄冷和释冷对比实验,结果表明:Ti O2-Ba Cl2-H2O纳米流体的过冷度受到极大抑制;蓄冷时,Ti O2-Ba Cl2-H2O纳米流体冻结完成时间比Ba Cl2-H2O共晶盐水溶液大大提前,蓄冷率和蓄冷量均大幅度提高;释冷时,前者比后者的释冷速度快,单位时间内释放的冷量多。对蓄冷系统的传热分析表明,纳米流体有助于强化系统的总传热系数。在重庆啤酒厂的低温蓄冷系统中采用Ti O2-Ba Cl2-H2O纳米流体,其移峰填谷效果显著,投资回收期仅22个月,说明Ti O2-Ba Cl2-H2O纳米流体是一种很有潜力的工业用低温蓄冷材料。 Industrial low-temperature storage of valley electricity is an effective measure for DSM. However, the degree of subcooling of the existing cold storage materials is too high, resulting in the energy efficiency ratio of the refrigeration unit being too low. In this paper, Ti O2 nanoparticles were added into Ba Cl2-H2O eutectic salt solution to prepare suspension-stabilized Ti O2-BaC12-H2O nanofluids. The thermal storage properties of Ti O2-Ba Cl2-H2O nanofluid and Ba Cl2-H2O eutectic salt solution was compared and the results showed that the supercooling degree of Ti O2-Ba Cl2-H2O nanofluids was greatly inhibited. At the time of cold storage, the Ti O2-Ba Cl2-H2O nanofluid was frozen Compared with the Ba Cl2-H2O eutectic salt solution, the time was much earlier than that of the Ba Cl2-H2O eutectic brine solution, and both the storage rate and the storage rate increased significantly. When the temperature was released, the former was faster than the latter in releasing the cold and released more in unit time. Heat transfer analysis of the cold storage system shows that the nanofluids help to enhance the overall heat transfer coefficient of the system. The use of Ti O2-Ba Cl2-H2O nanofluid in the low-temperature storage system of Chongqing Brewery has significant effect of shifting the grain filling and the payback period is only 22 months, which shows that the Ti O2-Ba Cl2-H2O nanofluid is a very effective Potential for low temperature industrial cold storage materials.