制冷学报2018，Vol.39Issue(2)：113-118,6.DOI:10.3969/j.issn.0253-4339.2018.02.113
常温并联式脉动热管启动及运行特性的实验研究
Experimental Study on Startup and Operating Characteristics of Parallel Type Pulsating Heat Pipe under Normal Temperature
摘要
Abstract
An experimental system that used a constant hot-water-heating heat pipe was constructed to study the performance of a paralleltype pulsating heat pipe under normal temperature.With methanol as the medium and a heat pipe diameter of 4 mm,the effects of different cooling forms,heating and cooling temperatures,and liquid filling volumes on the starting characteristics were studied.The influence of different diameters (2,4,6,8 mm) on the isothermal property was researched with methanol as the medium,and the heat-transfer capabilities with different heating lengths (20,25,30 cm) under methanol and R600a as working media were investigated.The results showed that a condenser section that used water cooling was better than natural air cooling for heat pipe start-up.A higher heating temperature and lower cooling temperature were advantageous for the heat pipe start-up.The start-up time of the heat pipe increased with the filling quantity.During the running period,the heat pipe had a good isothermal property in the longitudinal and transverse directions,and the isothermal property gradually decreased with an increase in the heat pipe diameter.With an increase in the heating temperature,the changing laws for the heat-transfer capability were different when the working media are methanol and R600a.Shortening the evaporation segment length could alleviate the adverse effects of overheating on the heat pipe.关键词
脉动热管/启动特性/等温性/传热量Key words
pulsating heat pipe/starting characteristic/temperature uniformity/heat transfer capability分类
能源科技引用本文复制引用
许登科,庞建勇,杜传梅,管二勇..常温并联式脉动热管启动及运行特性的实验研究[J].制冷学报,2018,39(2):113-118,6.基金项目
本文受安徽省高校自然科学研究重大项目(KJ2015ZI20)和国家安全监管总局安全生产重大事故防治关键技术科技项目(anhui-0003-2016AQ)资助.The project was supported by the Major Program University Science Research Project of Anhui Province(No.KJ2015ZD20) and the Key Technologies of Safety Accident Prevention and Control with State Administration of Work Safety Supervision (No.anhui-0003-2016AQ). （KJ2015ZI20）
