The characteristics of heat transfer enhancement by spirally indented tube were investigated.
对冷凝器中采用螺纹槽管强化传热的方法进行了分析 ,提出了采用低翅片管或在螺纹槽管外侧采用适当的强化传热手段可以使冷凝器的传热效率得到提高。
Several problems of spirally indented tubes used in marine condenser are evaluated.
介绍了螺纹槽管用于船舶冷凝器中的几个问题。
In this paper,the results of experimental investigation on heat transfer and fluid pressure drop of spirally fluted tubes for steam condensation are reported and analyzed.
介绍了螺纹槽管传热与阻力特性的实验结果，并对结果进行了分析螺纹槽管由铜镍合金管（Ｂ３０）辗轧制成根据大量的实验数据，得到了计算对流换热系数、冷凝换热系数及阻力系数的经验关联式在实验范围内，关联式的计算精度分别为±１４％，±１３％和±２５％
The experimental results have important significance for the practical use of the spiral tube condenser.
所得实验结果对螺纹槽管冷凝器的实际应用有指导性意义。
The results of experiments showed that spirally fluted titanium-tube are better choice on heat transfer enhancement for the miniaturization of naval steam condensers.
实验结果表明，钛螺纹槽管是实现冷凝器小型化较为理想的强化管管型。
Tubing thread is available for API tubing threads and TM threads.
油管螺纹可采用API油管螺纹，或TM螺纹。
Side view of fillister head slotted screw with adjustable thread length.
螺纹长度可调整的槽头螺钉的侧面图。
Double Spiral Fluting Tap, a New Type Threading Tool
一种新型的螺纹工具——双螺旋槽丝锥
From the top of the air gap, thread the relief valve hose down and out the slot.
从气隙顶部，将安全阀软管螺纹旋下来，并拉出沟槽。
NPT tapered tube thread gauges
NPT锥管螺纹量规
a fastener with a tapered threaded shank and a slotted head.
由带螺纹的连杆和槽头组成的扣件。
twisted flutings
呈螺旋状环绕柱身的柱面凹槽饰纹
Apply pipe dope sparingly on pipe threads, never on valve threads.
在管道螺纹上涂敷螺纹油，但是不要在阀门螺纹上涂螺纹油。
Top view of fillister head screw. Selection box represents thread diameter.
槽头螺钉的俯视图。选择框代表螺纹直径。
Top view of posidriv screw. Selection box represents thread diameter.
十字槽螺钉的俯视图。选择框代表螺纹直径。
Side view of raised countersunk posidriv screw with adjustable thread length.
螺纹长度可调整的半埋头十字槽螺钉的侧面图。
Side view of countersunk slotted screw with adjustable thread length.
螺纹长度可调整的埋头一字槽螺钉的侧面图。
Side view of panhead posidriv screw with adjustable thread length.
螺纹长度可调整的平头十字槽螺钉的侧面图。
Side view of panhead slotted screw with adjustable thread length.
螺纹长度可调整的平头一字槽螺钉的侧面图。
Side view of countersunk posidriv screw with adjustable thread length.
螺纹长度可调整的埋头十字槽螺钉的侧面图。
