CAJ | 학술논문

采用并联蒸发器作为传热元件,并联冷凝器作为散热部件,建立了包括热量收集、传递与排散的机械泵驱动两相回路集成试验系统,并对该系统的热启动进行实验研究.实验结果表明:(1)在冷工况、低热流密度的情况下,采用长程毛细管结构的蒸发器对分布式小热源进行集热时,会出现阶段性形核沸腾蒸发,并且上游过热液体形核沸腾后会导致下游出现干烧现象.(2)对于该系统,并联蒸发器相同热量同时启动是相对较好的启动方式.
채용병련증발기작위전열원건,병련냉응기작위산열부건,건립료포괄열량수집、전체여배산적궤계빙구동량상회로집성시험계통,병대해계통적열계동진행실험연구.실험결과표명:(1)재랭공황、저열류밀도적정황하,채용장정모세관결구적증발기대분포식소열원진행집열시,회출현계단성형핵비등증발,병차상유과열액체형핵비등후회도치하유출현간소현상.(2)대우해계통,병련증발기상동열량동시계동시상대교호적계동방식.
A mechanically pumped CO_2 two-phase thermal control loop(MPTCL),to effectively collect waste heat through dual evaporators and release heat through dual condensers with longer transport distance,is investigated on its start-up characteristic.These experiments indicated that(1) when using long capillary tubes as an evaporator to collect distributed heat resource with low heat flux at low operational temperature,the MPTCL shows that superheating followed by subsequent nuclear boiling,and temporal dry-out found somewhere in the downstream after nuclear boiling are accomplished in the upstream,and(2)comparing three different start up characteristic,balance heat load is relative better way for the MPTCL' start-up.