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smooth tube bundles
相关语句
  光管管束
     STUDY ON WORN-OUT RESULTING FROM IMPACT OF FLY ASH PARTICLES ONTO SMOOTH TUBE BUNDLES WITH IN-LINE ARRANGEMENT
     飞灰颗粒撞击顺列光管管束的磨损研究
短句来源
  “smooth tube bundles”译为未确定词的双语例句
     AN EXPERIMENTAL STUDY OF BOILING HEAT TRANSFER ON SMOOTH TUBE BUNDLES
     光管管束的沸腾传热实验研究
短句来源
     Investigation indicated that heat transfer coefficient in shell side for helical baffle heat exchanger with lozenge tube bundles was 54%-108% higher, but flow resistance coefficient was 30% to 5% lower than that for helical baffles heat exchang-ers with smooth tube bundles.
     研究结果表明:在该试验条件下,菱形翅片管螺旋折流板换热器的壳侧传热膜系数比光滑管螺旋折流板换热器高54%~108%,具有较好的强化传热效果,而壳侧流动阻力系数则比光滑管螺旋折流板换热器低30%—5%。
短句来源
  相似匹配句对
     Application of Tube Charge in Smooth Blasting
     爆裂管在光面爆破中的应用
短句来源
     Development of Smooth and Soft Tube for Fishing
     钓鱼用光滑软胶管的研制
短句来源
     smooth pellets;
     空心、光滑的菌球。
短句来源
     Modular Tube
     组像管
短句来源
     TUBE HOUSING
     管式住宅
短句来源
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The researches were given to the influence,with the tube arrangement,the intertube space.the number of heating tubes.the difference of heat flux and the working liquids,on boiling heat transfer in a tube bundle. The experimental results showed that the performance of a PTRB bundle is slightly worse than that of a single PTRB tube for water and is nearly the same for ethanol. The increase of heating tubes results in a slight deterioration which is more obvious for the...

The researches were given to the influence,with the tube arrangement,the intertube space.the number of heating tubes.the difference of heat flux and the working liquids,on boiling heat transfer in a tube bundle. The experimental results showed that the performance of a PTRB bundle is slightly worse than that of a single PTRB tube for water and is nearly the same for ethanol. The increase of heating tubes results in a slight deterioration which is more obvious for the upper tubes and high heat fluxes with water. In general,the heat transfer coefficient of a PTRB bundle is 2 times higher than that of a smooth tube bundle.

实验研究了抑泡孔管管束的排列方式、管间距、加热管子根数、热负荷大小、沸腾工质物性等因素对抑泡孔管管束沸腾传热性能的影响规律。实验结果表明,抑泡孔管束与光管束、低肋管束的沸腾传热性能截然不同,而与机加工多孔管束和烧结粉末表面管束有某些相似之处。管束中的沸腾管数增加,有轻微恶化传热的趋势;高负荷时这种趋势更明显;管间距直径比的变化对管束特性影响不显著;乙醇为工质时,管束排列方式和热负荷大小等对沸腾传热的影响甚微。

This paper introduces the clarifying influence of the intertube spacing, the tube arrangement,the heat flux and the working fluid on boiling heat tra(?)sfer of smooth tube bundles. The tube bundles include the arrangements of twin tubes, triple tubes, seven tubes and thirteen tubes. The relative intertube spacing of the tube bundles is from 0. 9 to 3. 3. Experimental results show that the tube position and intertube spacting have no effect on boiling...

This paper introduces the clarifying influence of the intertube spacing, the tube arrangement,the heat flux and the working fluid on boiling heat tra(?)sfer of smooth tube bundles. The tube bundles include the arrangements of twin tubes, triple tubes, seven tubes and thirteen tubes. The relative intertube spacing of the tube bundles is from 0. 9 to 3. 3. Experimental results show that the tube position and intertube spacting have no effect on boiling curves for the region of fully-devoloped boiling. And they considerably affect the heat transfer coefficient for the transition region between natural convection and nucleate boiling. In general,the heat transfer coefficient in the transition region for the upper tubes can be enhanced by 0. 5 to 1. 5 times.

本文实验研究了管束间距、管排数、管束排列方式、热负荷大小和沸腾工质物性等因素对光管管束池沸腾传热的影响规律。实验包括有二排管束、三排管束、七管束、十三管束等,管束相对间距在0.9~3.3之间。实验结果表明,对于旺盛核池沸腾区域,管束中管间距的影响甚微,沸腾曲线基本上与光管时吻合;对于自然对流向核沸腾转折区域,管束各管间的影响较大,明显地使传热强化,一般可提高10~100%。

The condensation heat transfer of nonazeotropic mixtures R11/R113 on 3row horizontal smooth tubes and petalshaped fin tubes was studied under forced convective condition.Experimental results showed that,because of its special three dimensional structure,petalshaped fin could not only induce strong turbulence for flowing vapor and make the heat resistance of vapor film become smaller,but also bring the condensation surface tension into full play,and make the heat resistance of condensation film become smaller,thus obviously enhancing the condensation heat transfer of nonazeotropic mixtures on bundle.At the same heat flux,the average condensation heat transfer coefficient on petalshaped fin tube bundle is 3~5 times as large as that of smooth tube bundle....

The condensation heat transfer of nonazeotropic mixtures R11/R113 on 3row horizontal smooth tubes and petalshaped fin tubes was studied under forced convective condition.Experimental results showed that,because of its special three dimensional structure,petalshaped fin could not only induce strong turbulence for flowing vapor and make the heat resistance of vapor film become smaller,but also bring the condensation surface tension into full play,and make the heat resistance of condensation film become smaller,thus obviously enhancing the condensation heat transfer of nonazeotropic mixtures on bundle.At the same heat flux,the average condensation heat transfer coefficient on petalshaped fin tube bundle is 3~5 times as large as that of smooth tube bundle.

研究了强制对流条件下,非共沸混合工质R11/R113在三排水平直列光滑管及花瓣形翅片管束外的冷凝传热。实验结果表明:花瓣形翅片管由于具有特殊的三维翅片结构,既能激发流动的蒸气产生强烈地湍流,减小其气膜热阻,又能充分发挥冷凝液表面张力的作用,减少其液膜热阻,从而显著地强化了非共沸混合工质在管束外的冷凝传热。在相同热流率下,其管束平均冷凝传热系数是光滑管管束的3~5倍。

 
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