When the thermal load is high, steam lock in the collecting header and fluctuating flow in the parallel tubes make the water circulation safety of the waste heat boiler decrease. 热负荷较高时,汽塞和流量脉动也会导致高温取热炉水循环可靠性下降。
This paper describes the preparation and properties of AIN_xO_y solar energy selectively absorbing films for vacuum collecting tubes. 叙述真空管集热器用的太阳能高温选择性吸收膜氮氧化铝(AlNxOy)的制备及性能。
Collecting tubes were showed as like line, brush and sac like dilatation on IVP in 2 cases 3 kidneys. IVP2例3肾显示收集管呈线状、刷子状、囊状扩张。