| 连续螺旋折流板蒸发器壳侧流动换热数值模拟研究 |
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| 引用本文： | 陈贵冬,高强,曾敏,王秋旺.连续螺旋折流板蒸发器壳侧流动换热数值模拟研究[J].工程热物理学报,2011(1):104-106. |
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| 作者姓名： | 陈贵冬 高强 曾敏 王秋旺 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(No.50776068); 广东省产学研结合专项基金项目(No.2006D090304025) |
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| 摘 要： | 本文对相同几何尺寸的连续螺旋折流板蒸发器与传统弓形折流板蒸发器进行对比性的数值模拟研究,结果表明:在相同壳侧体积流量和折流板数条件下,连续螺旋折流板蒸发器的传热因子和摩擦因子约是弓形折流板的1/3和1/4;当以换热因子和摩擦因子比值评价蒸发器综合性能时,连续螺旋折流板蒸发器比弓形折流板蒸发器提高57%;当最小流通截面流...
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| 关 键 词： | 连续螺旋折流板 弓形折流板 数值模拟 蒸发器 |
NUMERICAL STUDIES ON SHELL-SIDE PERFORMANCE OF SHELL-AND-TUBE EVAPORATORS WITH CONTINUOUS HELICAL BAFFLES |
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| CHEN Gui-Dong GAO Qiang ZENG Min WANG Qiu-Wang.NUMERICAL STUDIES ON SHELL-SIDE PERFORMANCE OF SHELL-AND-TUBE EVAPORATORS WITH CONTINUOUS HELICAL BAFFLES[J].Journal of Engineering Thermophysics,2011(1):104-106. |
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| Authors: | CHEN Gui-Dong GAO Qiang ZENG Min WANG Qiu-Wang |
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| Institution: | CHEN Gui-Dong GAO Qiang ZENG Min WANG Qiu-Wang (State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | In the present study,the shell-side flow and heat transfer characteristics of shell-and-tube dry expansion evaporator with continuous helical baffles were studied by Computation Fluid Dynamic (CFD) method.The results indicated that,for the same volume flow rate,the j factors and f factors of evaporator with continuous helical baffles were only 1/3 and 1/4 of the evaporator with segmental baffles.However,the comprehensive performance j/f factor had 57%increases.If the maximal velocity ratio was higher than 2... |
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| Keywords: | continuous helical baffles segmental baffle CFD shell-and-tube evaporator |
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