作　　者： ; ;

机构地区： 西安交通大学

出　　处： 《动力工程》 1993年第4期6-10,共5页

摘　　要： 本文对井下蒸汽发生器圆柱形燃烧室壁面采用环形间隙水冷却的传热特性进行了实验研究.获得了燃烧室外壁面温度及对流放热系数等参数随轴向位置的变化规律;发现壁面平均热负荷不随冷却水流量而变化.分析了环形间隙出口大节流条件下的间隙内汽化机理,确定了不发生汽化的极限冷却水流量. The heat transfer characteristics of annular cooled cylintrical combustion chambers of under-ground steam generators were studied experimentally. The regular pattern that parameters such as combustion chamber's outer-wall temperature and convection heat transfer coefficients vary with axial positions was obtained.The vapourizing mechanism in the annular chamber under large throttling condition at the exit of the annular chamber was studied and herewith the limiting cooling water flow for preventing vapourizition deteri-mined.Figs 8.

关 键 词： 蒸汽发生器 传热 汽化 锅炉 燃烧器

领　　域： [动力工程及工程热物理]