换流器

Examinations of steady status and analysis of dynamic experiments have been conducted on Band-Tube evaporator and Parallel-Flow condenser using R134a refrigerant. The steady examination show that the model error was under the allowable error, The inlet mass and enthalpy disturb experiments indicate that the subsection model ,be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status.

在进行仿真试验时，以使用R134a作制冷剂的管带式蒸发器和平行流式冷凝器为对象，完成了稳态仿真计算、试验和动态仿真分析，稳态计算结果和试验数据对比表明，其误差在允许范围内；进口质量和焓值的扰动试验结果表明：本文所建的区段式换热器仿真模型，能很好的反映换热器性能参数的动态变化，与系统热动力学理论和冷凝器、蒸发器的实际工作过程基本一致。

The status of the flow in manifold systems will directly affect the efficiency and security of an exchanger. With the help of discrete model, the characteristic of the flow in manifold systems will be got.

流体在并联管组换热器中的流动状况将直接影响到换热器运行的效率和安全性，通过离散模型计算方法可得到流动工质在并联管组内的流动特性。

After rational predigestion of the heat exchanger of the thermoelectric generator''s physical model in this paper,by using the Fluent software,adopting the SIMPLE arithmetic and k-εmodel,the 3D inner flow of the heat exchanger of the thermoelectric system was simulated numerically.

本文在对温差发电系统的冷端换热器的物理模型进行了合理的简化处理后，应用Fluent通用软件，采用Simple算法和标准k-ε湍流模型，对温差发电系统的冷却端换热器内的流场进行了三维数值分析。

The experiment acquired pressure distribution and circulating rate under three fluidizing velocity (3.5m/s、4.5m/s、5.5m/s) and different media load. An experimental equation was acquired between circulating rate and the distribution of the pressure. And the relation between the circulating rate and the opening rate of the valve connecting the returner and the EHE was carefully discussed as well as the relation between the pressure of the EHE and the flow rate of the fluidizing air.

得到三种流化风速下（3.5m/s、4.5m/s、5.5m/s）不同装料量所对应的主床床体压力分布和物料循环量，得到循环量与压力的分布和流化风速的本实验台上的经验公式，并通过测量返料器通向外置换热器机械阀开度和返料量的关系，得到旋风分离器中下落物料进入换热器和直接进入主床的比例关系，同时测得换热器中压力和送风量的关系。

Structure characteristics of the shell-side of the shell-and-tube heat exchanger and laws of fluid flow and heat transfer are researched deeply, and ""sideling flow"" in the shell-side is researched especially.

相对于现有壳程流体横向流、纵向流和螺旋流的流动状态，换热器壳程流体的倾斜流动状态兼有壳程流体横向流动和纵向流动所具有的传热和阻降性能的双重优势，从而发展了管壳式换热器壳程结构设计理念。

Through experimental methods,an experimental study has been performed of the dynamic characteristics of heat exchangers with continuous spiral baffle plate s,which have water and oil to serve as heat exchange working media.

建立了可进行壳管式换热器动态特性试验研究系统，通过试验研究的方法对水-油为换热工质的连续螺旋折流板管壳式换热器动态特性进行了试验研究，进口流量扰动为等百分比流量特性，研究了4种流量扰动方式下水和油出口温度的动态响应。

For these reasons, aiming at the low temperature separate method of light hydrocarbon recovery, the simple and accurate SRK state equation has been used to calculate the components thermodynamic characters of natural gas. This paper simulates the units process of the light hydrocarbon recovey process such as flow mixer/spilliter, flash, pump, valve, compressor, expander, distillation and heat exchange etc., and give examples to contrast calculation for each unit process.

为此，针对轻烃回收低温分离法工艺，以简单、准确的SRK状态方程为热力学计算基础模型，对轻烃回收工艺中的流股混合器、流股分割器、等温闪蒸器、绝热闪蒸器、泵、节流阀、压缩机、膨胀机、精馏过程及换热器等单元过程进行了模拟，并对各单元过程进行了实例对比计算。

Large air separation plant 40000m3/h, This plant adopts molecular sieve system to adsorb CO2, C2H2, moisture and CnHm in air to pre-purify air, by use of air booster compressor, to pressurize some of purified feed air by two sections, pressurized air to warm up high pressure liquid oxygen in high pressure coil heat exchanger to ambient temperature and delivere out off cold box to coal gasification, some pressurizrd air by first section is drawn from middle part of coil heat exchanger and expanded in medium pressure expander then led into lower column, other part of pressurized air by second section is drawn from cold end of coil heat exchanger and led into lower column after throttling, un-pressurized feed air is cooled by return gas in plate fin heat exchanger and led into lower column.

产品描述：采用常温分子筛空气预净化系统吸附空气中的CO2、C2H2、水份和一些碳氢化合物，使用单独的空气增压压缩机将部分净化后的原料空气分为两段增压，增压后的空气在高压绕管式换热器中将经液氧泵加压的高压液氧汽化并复热至常温送出冷箱直接供煤气化工序使用，第一段增压后的空气，部分从绕管式换热器中部抽出经电机制动的中压透平膨胀机膨胀后送入下塔，另一部分经第二段增压后从绕管换热器的冷端抽出节流后送入下塔，未经增压的原料空气在板翅式换热器中被低压返流气体冷却后进入下塔。

The economical advantage of multi-stream heat exchangers network over traditional two-stream heat exchangers network is illustrated through calculations.

3论文中对多流股换热网络和普通的双流股换热网络综合方法进行实例计算分析，说明应用多流股换热器的优势。

The feasibility of proposed GA/SA approach for HENS with multi-stream heat exchangers is demonstrated successfully through varying scale synthesis problems.3 The economical advantage of multi-stream heat exchangers network over traditional two-stream heat exchangers network is illustrated through calculations.

作为工程实例，本文将GA/SA综合多流股换热器网络程序应用于辽阳石化分公司的原油预热换热器网络的改造，所提出的换热网络满足了厂方的改造要求，降低了操作费用，可以带来较高的经济效益。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了