密度锁启动过程中传热特性的实验研究

Experimental Research on Heat Transfer in Process of Starting Up of Density Lock

分别在无扰动以及扰动大小不同的实验情况下,对密度锁启动过程中的传热特性进行了实验研究。研究结果表明,密度锁能抑制热量下传。根据传热情况,密度锁内过渡区可分为强分层、弱分层和无分层3种情况。强分层和弱分层情况下,密度锁都能有效地阻止热量下传,且强分层向下传热量更小。而在无分层情况下热量连续不断地从密度锁传出,导致密度锁失效。

Experimental studies of heat transfer in the start up of density lock are carried out, respecitvely without disturbance and with different disturbances. The research indicates that, stratification can be divided into three types, i.e., strong stratification, weak stratification and no stratification. Both the former two cases can restrain heat transfer, moreover, the heat transfer in strong stratification is less than that in week stratification and the heat would directly go through the density lock continuously in the third case so that the density lock is invalid.