板式换热器的特点与优化设计

板式换热器的广泛应用,加速了我国板式换热器行业的迅速发展,但我国板式换热器设计与发达国家之间仍存在着不小的差距。鉴于我国板式换热器在设计方面存在的不足,本文讨论了板式换热器的优化设计方法,分析了如何才能使板式换热器达到最佳的方法。     

板式换热器失效的主要原因及相关对策

板式换热器是一种结构紧凑、性能高效的换热器。但板式换热器的各种失效破坏也给使用者造成一定的经济损失,其原因是多方面的。本文分析了板式换热器失效的原因,以及提出了解决板式换热器失效的相关对策。     

印刷板式换热器在LNG工业领域的研究进展

介绍了印刷板式换热器的应用背景,综述了国内外印刷板式换热器研究现状及进展,总结了印刷板式换热器所存在的问题。分析表明国内外对印刷板式换热器的研究应用日益重视,在LNG工业中印刷板式换热器与传统的LNG气化器相比更紧凑、高效,具有广阔的应用前景。     

同系列板式换热器经济性选型

板式换热器是一种高效、节能、紧凑的设备,由于其传热系数大,传热阻力小等特点被广泛应用在各种工业,它的发展已经历140多年历史。为了满足各种工况下板式换热器的应用,各板式换热器厂家开发了同系列的板式换热器,同一工况下,同一系列的板式换热器都可以使用,本文通过实例选型过程分析同一系列板式换热器的经济性。     

板式换热器的研究进展

介绍了板式换热器的整体结构,总结了在设计计算中常取的无量纲参数,简要回顾了国内外板式换热器的发展历程,梳理总结了板式换热器在传热流动、结构设计优化、材料及失效方面的研究进展,并对板式换热器今后的发展方向进行展望。     

用于水产品解冻水能量回收的换热器选择

针对水产品解冻水能量回收问题,比较了管式和板式换热器的优、缺点,介绍了不同类型换热器的工作原理和应用领域,就换热器中的污垢和腐蚀两方面作了重点介绍,在此基础上对焊接式板式换热器做了简要介绍。最终选取板式换热器作为解冻水能量回收的换热器。     

板式换热器作为压缩机冷却器时的传热和流阻性能

这几十年,虽然我国科技和经济不断进步,但是很多专业的方面还与国外有很大的差距,例如板式换热器的制造,我们应该在板式换热器的性能优化上不断努力,并且针对特定板式换热器的使用情况进行深入研究记录,为实际生产提供一些理论指导,本文首先对板式换热器的构造、工作原理及特点进行了阐述,简单介绍了板式换热器的热力计算,并且实验研究了人字形波纹板式换热器传热与流阻性能。     

板式换热器在制冷技术中的应用与发展

介绍了板式换热器的结构与特点，分析了制冷系统对板式换热器的特点要求，介绍了制冷用板式换热器的及其特点，对板式换热器在制冷技术中的应用与怅进行了探讨。     

《石油化工设备设计选用手册》——《换热器》分册出版发行

《换热器》分册,包括管壳式换热器、空气冷却器、板式换热器、螺旋板式换热器、板翅式换热器、热管换热器等类型,介绍了各种换热器的功能、结构、工艺设计与选用等内容。本书可供从事石化设备换热器设计、     

中国自主研发首款铜合金板式换热器面世

2008年4月29日,“板式换热器的新蓝图——新型铜合金制板式换热器全国首发仪式”在上海举行,中国首款铜合金板式换热器在该仪式上正式推出。专家认为它的面世开拓了国内板式换热器市场。该产品充分利用了铜合金材料耐腐蚀、高导热、抑菌等自身优势,经济实用、技术可靠,     

乙烯高温换热器泄漏原因分析及对策

介绍了乙烯装置高温循环水换热器泄漏的基本状况,并就系统泄漏的原因从水侧和工艺侧状况进行了分析。通过采取有效的应对措施,控制了高温换热器的腐蚀、结垢加剧的趋势,找到了较好的高温循环水换热器的腐蚀、结垢控制手段。     

大型换热器抽芯工装设计

针对乙烯装置大型换热器现场检修中抽芯及除焦困难 ,设计了一套抽芯及除焦工装 ,经使用效果良好 ,为大型换热器的工厂化检修提供了有效途径     

Multi-period design of heat exchanger networks

Heat exchanger networks are an integral part of chemical processes as they recover available heat and reduce utility consumption, thereby improving the overall economics of an industrial plant. This paper focuses on heat exchanger network design for multi-period operation wherein the operating conditions of a process may vary with time. A typical example is the hydrotreating process in petroleum refineries where the operators increase reactor temperature to compensate for catalyst deactivation. Superstructure based multi-period models for heat exchanger network design have been proposed previously employing deterministic optimisation algorithms, e.g. (0005 and 0180). Stochastic optimisation algorithms have also been applied for the design of flexible heat exchanger networks recently (0110 and 0115). The present work develops an optimisation approach using simulated annealing for design of heat exchanger networks for multi-period operation. A comparison of the new optimisation approach with previous deterministic optimisation based design approaches is presented to illustrate the utilisation of simulated annealing in design of optimal heat exchanger network configurations for multi-period operation.     

Devise of a W serpentine shape tube heat exchanger in a hard chromium electroplating process

In a hard chromium electroplating process, a heat exchanger is employed to remove the heat produced from the high current intensity in an electroplating bath.Normally, a conventional U shape heat exchanger is installed in the bath, but it provides low heat removal.Thus, this study designs a novel W serpentine shape heat exchanger with identical heat transfer area to the conventional one for increasing heat removal performance.The performance of the heat exchange is tested with various flow velocities in a cross-section in range of 1.6 to 2.4 m·s~(-1).Mathematical models of this process have been formulated in order to simulate and evaluate the heat exchanger performance.The results show that the developed models give a good prediction of the plating solution and cooling water temperature, and the novel heat exchanger provides better results at any flow velocity.In addition, the W serpentine shape heat exchanger has been implemented in a real hard chromium electroplating plant.Actual data collected have shown that the new design gives higher heat removal performance compared with the U shape heat exchanger with identical heat transfer area; it removes more heat out of the process than the conventional one of about 23%.     

Modeling for industrial heat exchanger type steam reformer

In a heat exchanger type steam methane reformer, the temperature profiles and mole fractions along the axial distance from the top of the reformer can be predicted by using the channel model, considering radiation heat transfer. The cross-section of the reformer tube was divided into several channels as concentric circles and then heat transfer and mass transfer at the interfaces between adjacent channels were considered. Because the steam reformer is operated at high temperature, the radiation and convection were combined into one heat transfer coefficient to simplify the transfer analysis. This model predicts the industrial plant data very well; therefore, it may be used with confidence to design the industrial heat exchanger type reformer.     

利用夹点技术分析优化甲基叔戊基醚装置换热网络

利用Aspen Plus软件计算出冷流股和热流股的焓变,冷热流股的焓变分别为1.4W和-1.2W,然后运用夹点技术对甲基叔戊基醚固定床装置换热网络进行优化分析.计算结果表明,优化后的换热网络节能效果较好.通过小试数据,可以推断中试乃至工业化装置的换热网络节能情况.     

浅析热管换热器性能特点

简要介绍了热管换热器的发展现状。目前，由于热管换热器投资少、传热效果好和设备体积小，因而得到了广泛的应用。着重地介绍了几种热管换热器的性能特点，其中包括标准热管、重力热管、重力辅助热管和旋转热管，并且对其的性能进行了分析。利用热管换热器，不但可以缓解我国能源供需矛盾，而且还可带来较高的经济效益。     

核电厂排污系统非再生热交换器设计

所设计的非再生热交换器应用于某核电厂工程1号机组的排污水冷却,其管侧和壳侧分别承受7.5 MPa和0.8 MPa的压力,一旦失效其危害性较大.以RCC-M《压水堆核电厂核电机械设备设计和建造规则》为依据,通过对该设备的材料、设计、制造、检验和压力试验等环节的控制,确保该设备能安全稳定地运行.     

内压缩流程空分的换热与精馏研究

分析和讨论了内压缩空分设备的氧氮两组分、氧氮氩三组分及氧氩两组分和氮氩两组分的相平衡,精馏部分的上塔、下塔、粗氩塔、精氩塔的精馏以及高压主换热器、低压主换热器、过冷器及主冷凝蒸发器等换热设备。希望能促进空气分离设备在理论方面的发展。     

沉浸竖板式低温海水换热器的设计与应用分析

沉浸竖板式换热器适用于低温海水在换热过程中换热器表面结冰等工况。介绍了该换热器的结构和工作过程,给出了计算其海水侧、载冷剂侧传热膜系数及其结构尺寸的公式。针对一20 kW热负荷的实例进行了具体的设计计算,并分析了实际应用中需考虑的因素。