CAJ | 학술논문

研制了一套以不锈钢丝网为毛细芯的平板式蒸发器、风冷式冷凝器,以甲醇为工作工质的环路热管,并着重研究了其在不同热负荷条件下启动特性以及变工况条件下运行特征.实验结果表明,平板式LHP可以在1～10 W/cm2热流密度范围内顺利启动,并有良好的适应变热负荷能力,在改变工况的时候系统一般能在3 min内重新达到新平衡状态.系统在18～48 W热负荷条件下出现波幅和周期不等的温度波动现象.实验系统的热阻在0.29～3.2 ℃/W之间,热阻与热负荷、系统倾角以及工质充灌量有关,并重点研究了倾角以及充灌量对系统启动及其变工况运行的影响.
연제료일투이불수강사망위모세심적평판식증발기、풍랭식냉응기,이갑순위공작공질적배로열관,병착중연구료기재불동열부하조건하계동특성이급변공황조건하운행특정.실험결과표명,평판식LHP가이재1～10 W/cm2열류밀도범위내순리계동,병유량호적괄응변열부하능력,재개변공황적시후계통일반능재3 min내중신체도신평형상태.계통재18～48 W열부하조건하출현파폭화주기불등적온도파동현상.실험계통적열조재0.29～3.2 ℃/W지간,열조여열부하、계통경각이급공질충관량유관,병중점연구료경각이급충관량대계통계동급기변공황운행적영향.
Developed was a set of plate type evaporator and air cooled condenser with stainless steel wires serving as capillary cores,and loop heat pipes with methanol serving as the working medium. The emphasis was put on the study of their startup characteristics under different heat load conditions and their operating characteristics under off-design operating conditions. The test results show that the plate type of loop heat pipes can successfully start up at a heat flux density ranging from 1 W/cm2 to 10 W/cm2 and have a good capacity to accommodate themselves to a change in the heat load. During a transition from one operating condition to another,the system can usually come to a new balance state within 3 minutes. Under the condition of the heat load of 18 W to 48 W,a phenomenon of temperature fluctuations with unequal wave amplitudes and cycles will emerge in the system. The heat resistance of the experimental system is between 0.29 and 3.2 ℃/W. The heat resistance is related to heat load,system inclination angle and filling amount of the working medium. Special emphasis of the present study was put on an analysis of the influence of the above-mentioned inclination angle and filling amount on the startup of the system and its off-design operations.