摘要
在外界条件相同时,对"黑匣子"保温部分进行三维数值模拟,得出水箱表面热流随加热时间的变化规律;三类保温材料水温升高至沸点的时间和水箱表面热流的变化规律。结果表明:随着加热时间的延长,水箱表面的热流上升,平均每秒上升0.52W;对三类保温材料,其厚度每增大1mm,水温升至沸点的时间延长81.1s、92s和109.3s,水开始沸腾时水箱表面的热流分别下降11.8W、9.34W和5.16W。
A three- dimensional numerical simulation of tile ＂black box＂ thermal insulation section was conducted under the same external conditions, which gets the variation of the surface heat flux of water tank with the change of heating time, and the variation of the time that the water temperature ri- ses to the boiling point and t^e variation of the surface heat flux of the water tank when the thickness of the three thermal insulation materials was different. The results show that with the extension of the heating time the surface heat flux of water tank increases with average 0. 52W per second; when the thickness of the three kinds of thermal insulation material increases every lmm, the water boiling time prolongs 81. Is, 92s and 109. 3s, and the surface heat flux of water tank decreases 11.8W, 9. 34W and 5. 16W respectively when water begins to boil.
出处
《冶金能源》
2012年第5期24-27,共4页
Energy For Metallurgical Industry
关键词
“黑匣子”
数值模拟
热量传递
水蒸发
＂black box＂ numerical simulation heat transfer water evaporate
