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以常压去离子水为工质，对自然循环工况下上升加热段内单相水的摩擦阻力及对流传热特性进行了实验研究。
The friction and convective heat transfer of single phase water flow in a vertical heated tube at natural circulation condition were experimentally investigated.
加热炉燃烧控制技术，就是在各种燃烧工况条件下，找到合理的最佳空燃比，以提高炉温控制精度和加热速度。
The combustion control techniques for reheating furnace are in order to search the optimal air fuel ratio, to improve the control precision of the temperature and the velocity.
原油加热炉在变工况下运行会严重降低效率。
Operating under variable conditions will affect the efficiency of the crude oil heater seriously.
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