1)Heat Exchanger With Helical Baffle螺旋折流板换热器
1.The shell-side flow pattern in the heat exchanger with helical baffle is quite different from that in the heat exchanger with conventional segment baffle.螺旋折流板换热器中壳程的流动方式与单弓形结构下具有很大的差别,在采用扇形板拼接而成的螺旋折流板结构中采用双螺旋结构来布置更多的折流板,减少流体在扇形板拼接处的漏流,使壳程流体流动更接近于平推流。
英文短句/例句
1.Study on Structure and Performance of Heat Exchanger with Helical Baffles;螺旋折流板换热器的结构及性能研究
2.EXPERIMENT ANALYSIS ON THE FLOW AND HEAT TRANSFER CHARACTERISTICS IN HELICAL BAFFLED SHELL- AND-TUBE HEAT EXCHANGERS螺旋折流板换热器流动与换热特性的试验分析
3.Numerical Simulation of the Flow and Heat Transfer of the Spiral Baffle Heat Exchangers螺旋折流板换热器流动与传热数值模拟
4.The Concise Spacial Resolution on Parameters of Heat Exchanger with Helical Baffle螺旋折流板换热器板参数的简明空间解析
5.Numerical Simulation of Flow in Shell Side of Shell-and-Tube Heat Exchangers with Helical Baffles螺旋折流板换热器壳侧流动的数值模拟
6.Comparison Experimental Study of Heat Transfer Performance of Heat Exchangers with Different Helical Baffles不同螺旋角螺旋折流板换热器传热性能对比实验
7.Research of heat transfer character of shell-and-tude heat exchangers with spiral fold baffles螺旋角度不同的螺旋折流板换热器壳程传热性能研究
8.Brief Introduction to Spiral Baffle Heat Exchanger and Method of Calculation of Relevant Dimensions螺旋折流板换热器简介及相关尺寸的算法
9.Research of Heat Exchanger Structure and Performance with Continuous Helical Shaped Baffles连续型螺旋折流板换热器结构及性能研究
10.Numerical Investigation on Heat Transfer and Flow Properties in Shell-side of Heat Exchanger With Continuous Helical Baffles连续螺旋折流板换热器壳侧传热与流动特性的数值研究
11.Experimental Study of Heat Transfer and Flow Resistance Characteristics for Shell-and-Tube Heat Exchangers with Continuous Helical Baffles连续螺旋折流板换热器传热与阻力性能实验研究
12.Research of Structure and Thermal Performance of Heat Exchangers with Continuous Helical Shaped Baffles连续型螺旋折流板换热器的结构及热工性能研究
13.Numerical Simulation and Discussion of the Enhanced Heat Transfer Mechanism in Continuous Spiral-Shaped Baffle Shell and Tube Heat Exchangers连续形螺旋折流板管壳式换热器强化传热机理的数值模拟
14.NUMERICAL STUDIES ON COMBINED MULTIPLE SHELL-PASS SHELL-AND-TUBE HEAT EXCHANGER WITH HELICAL BAFFLES组合式多壳程螺旋折流板管壳式换热器数值模拟研究
15.CALCULATION OF HEAT TRANSFER AND FLOW RESISTANCE OF SPIRAL PLATE HEAT EXCHANGERFOR GAS-LIQUID螺旋板式换热器气－液换热时流阻及传热计算
16.Simulation and experimental study on head loss of heat exchanger pipe with helical baffles螺旋折流板换热管水力损失数值模拟及实验
17.Studies on the Heat Transfer Enhancement at Novel Scheme of Coil-Strip-Baffle Heat Exchanger;新型螺旋折流片式换热器强化传热研究
18.Heat Transfer Characteristics and Flow Behaviors of the Spiral Plate Heat Exchanger;螺旋板式换热器的传热及流动特性研究
相关短句/例句
shell-and-tube heat exchangers with helical baffles螺旋折流板换热器
1.Three-dimensional numerical simulation was performed for the laminar fluid flow and heat transfer in the shell side of an experimentally tested shell-and-tube heat exchangers with helical baffles on the basis of porous medium and distributed resistance assumptions.证明了该方法能有效地模拟螺旋折流板换热器的流动和换热特性。
2.Three-dimensional numerical simulation was performed for the fluid flow and heat transfer in the shell side of shell-and-tube heat exchangers with helical baffles on the basis of porous medium and distributed resistance assumptions.采用多孔介质、分布阻力模型、阶梯逼近技术对螺旋折流板换热器壳侧的流动进行了三维数值模拟,湍流方程组的求解采用了改进的k-ε模型和壁面函数法。
3)Heat exchangers with helical baffles螺旋折流板换热器
1.The influence of inserting block plates on the performance of heat transfer and pressure drop in shell-and-tube heat exchangers with helical baffles was studied experimentally, with the identical number of tubes, identical shell inner diameter and identical flow rates of hot and cold fluids.本文分别对螺旋角为１０°和１５°的管壳式螺旋折流板换热器加与不加阻流板进行了换热与阻力性能实验。
4)shell-and-tube heat exchangers with continuous baffles连续螺旋折流板换热器
1.The ANN technique was adopted to predict the pressure drop of shell-and-tube heat exchangers with continuous baffles.采用人工神经网络技术(ANN)对连续螺旋折流板换热器的沿程压降进行了辨识及预测,开发了4-3-1 型人工神经网络结构及计算程序,人工神经网络的预测结果与实验数据良好。
5)heat exchanger pipe with continuous helical baffles螺旋折流板换热管
1.A heat exchanger pipe with continuous helical baffles was proposed.提出了一种连续螺旋折流板换热管,对其内部流场进行了数值模拟,并进行了物理模型实验验证。
6)Spiral baffle tubular heat exchanger螺旋折流板列管式换热器
延伸阅读
通用机械：螺旋板换热器由两张平行的金属板卷制成两个螺旋形信道﹐冷﹑热流体之间通过螺旋板壁进行换热的换热器。 结构型式 螺旋板换热器有可拆的和不可拆的两种型式。不可拆式螺旋板换热器的结构比较简单﹐螺旋信道的两端全部焊死。可拆式螺旋板换热器(见图 可拆式螺旋板换热器 )除螺旋信道两端的密封结构以外﹐其它与不可拆式完全相同。为达到机械清洗的目的﹐可拆式螺旋信道﹐一端敞开﹐用平板盖和垫片密封﹐以防止流体漏到大气中或同一信道内的流体短路。为了提高螺旋板的承压能力﹐在板与板之间用定距柱支撑。筒体上的流体进出口有法向接管和切向接管两种。中国普遍使用切向接管﹐它的流体阻力小﹐杂质容易被冲出。使用回转支座比较方便﹐可使换热器立放或卧放。换热的A﹑B流体分别流过螺旋板的两侧﹐其中的一种流体沿螺旋信道由外向内﹐至中心出口流出﹔而另一种流体则沿螺旋信道由中心进口﹐由内向外流出。两种流体呈纯逆流方式流动。螺旋板换热器最大结构尺寸为﹕板宽1800毫米﹐外径1700毫米﹐传热面积250米2﹐板与板之间的距离20毫米。允许最高操作压力可达 2.5兆帕。工作温度由选用的材料而定﹐材料大多用碳钢﹑不锈钢﹑铝﹑铜和钛。 应用 螺旋板换热器应用广泛。在中国﹐中小型合成氨厂的变换热交换器和合成塔下部的热交换器已先后用螺旋板换热器取代管壳式换热器。烧碱厂的电解液加热器和浓碱液的冷却器﹐采用螺旋板换热器所用的设备费仅为管壳式换热器的1/3。此外﹐这种换热器用于塔顶冷凝﹑淬火油冷却﹑发烟硫酸冷却和脂肪酸冷却等都有良好的效果。这种设备用于蒸汽的冷凝和无相变的对流传热效果最佳﹐也可用于沸腾传热。 特点 螺旋板换热器的特点是﹕ 传热效能好。弯曲的螺旋信道和定距柱﹐有利于增强流体的湍流状态。信道内流体阻力小﹐可提高设计流速﹐有种于提高传热系数。对于水-水换热﹐传热系数可达1.8～3.5千瓦每平方米每摄氏度〔kW/(ｍ2 ‧℃)〕。 有自清洗作用。单信道内的流体通过信道内杂质沉积处时﹐流速会相对提高﹐容易把杂质冲掉。 不可拆式结构的密封性能好﹐适用于剧毒﹑易燃﹑易爆或贵重流体的换热。 相邻信道内的流体呈纯逆流方式流动﹐可得到最大的对数平均温差﹐有利于小温差传热﹐适用于回收低温位热能。结构较紧凑。单位设备体积内的传热面积可达150米2/米3。 由于螺旋信道本身的弹性自由膨胀﹐温差应力小。 价格低廉。能否选用螺旋板换热器的关键是堵塞问题﹐尽管它有自清洗作用﹐但由于设计或操作不当也会发生堵塞﹐这时即使用可拆式结构也难于用机械方法清洗。采用水﹑气或蒸汽吹洗﹐操作方便效果更好。螺旋板换热器最大的缺点是检修困难﹐如发生内圈螺旋板破裂﹐便会使整台设备报废。
