制冷技术2024，Vol.44Issue(5)：21-27,7.DOI:10.3969/j.issn.2095-4468.2024.05.104
压缩式制冷循环R134a水合物蓄冷系统仿真研究
Simulation Study on R134a Hydrate Cold Storage System of Compression Refrigeration Cycle
摘要
Abstract
A R134a hydrate cold storage test bench based on a compression refrigeration cycle is established to study the cold storage performance of hydrates with different initial temperatures(Ti)and pressures(pi)in the reactor.Matlab simulation method is used to analyze the influence of different experimental parameters.The results show that reducing Ti will shorten the precooling time of hydrate formation.When pi is 150 kPa,the precooling time of Ti at 288.15 K is 19.8 min lower than that at 289.15 K.pi is proportional to the formation temperature and cold storage capacity of hydrate.When Ti is 293.15 K,the cold storage capacity of pi at 150 kPa,200 kPa and 250 kPa is 598.05 kJ,693.06 kJ and 728.63 kJ,respectively,but the growth rate decreases from 15.9%to 5.1%.By changing the ambient temperature(Te)from 283.15 K to 308.15 K,the average rate of cold storage in the system decreases by 7.8%.The change of condenser wind speed will affect the ratio of cold storage capacity to power consumption.The simulation results show that when Te is 288.15 K,293.15 K,298.15 K and 303.15 K,the optimal wind speed is 2.75 m/s,3.00 m/s,3.25 m/s and 3.50 m/s,respectively.关键词
R134a水合物/蓄冷系统/模型/优化Key words
R134a hydrate/Cold thermal energy storage/Model/Optimization分类
通用工业技术引用本文复制引用
郭郁,谢应明,邹俊华,杨振,俞秀娟..压缩式制冷循环R134a水合物蓄冷系统仿真研究[J].制冷技术,2024,44(5):21-27,7.基金项目
国家自然科学基金(No.50806050). （No.50806050）
