HEAT EXCHANGER DESIGN GOALS: Role of heat exchangers in chemical processing Basic concepts and terminology Types of heat exchangers Design methodology Sizing Design Rating

Molecular dynamics for continuous potentials Short history: The first MD simulation for a system interacting with a continuous potential (Lennard-Jones potential) was carried out by A. Rahman in1964. A. Rahman, Phys. Rev. 136, A405, (1964). Main differences between MD with continuous poentials and

.Unsteady, aperiodic motion in which all three velocity components fluctuate→ mixing matter, momentum, and energy. Decompose velocity into mean and fluctuating parts:

生物和环境 1神经的凋亡 Apoptosisi of Neuron 2.肌动蛋白 myosin的构象及作用机制 ture The Structure and Function of Myosin 3.钇激光器的发射特性 Yb Llaser Radiation Character 4.胰酶分泌素的分泌机制 The Secreting Mechanism of Cholecystokinin 5.钙离子在信号传导中的作用 The Function of Calcium in Signal Transduction 6.1,5-二磷酸核酮糖羧化酶的进化过程 The Evolution of Rubisco

HEAT EXCHANGER NETWORK SYNTHESIS 1: TARGETING OBJECTIVES: 1 Determine the minimum energy inputs required for a process 2Determine the minimum number of heat exchangers required to transfer this energy 3Develop a methodology for determining where these heat exchangers should be placed in the process

ENGINEERING ECONOMICS I TO INVEST, OR NOT TO INVEST, THAT IS THE QUESTION. (With apologies to William Shakespeare) Given one or more potential projects, how do we decide in which to invest, if any? What criteria do we use to evaluate potential projects?

HEAT EXCHANGER NETWORK SYNTHESIS 1: TARGETING OBJECTIVES: 1 Determine the minimum energy inputs required for a process 2Determine the minimum number of heat exchangers required to transfer this energy 3Develop a methodology for determining where these heat exchangers should be placed in the process

HEAT EXCHANGER DESIGN GOALS: Role of heat exchangers in chemical processing Basic concepts and terminology Types of heat exchangers Design methodology Sizing Design Rating

一、General”(常用)选项。 二、各项说明和应用实例 1、 Lock user in home directory(将用户锁定在主目录):如果选中则只允许用户访 问“主目录”以下的文件和目录(主目录即为根目录;如果不选中,则用户可一直 访问到主目录所在盘的实际根目录(比如“d”)下一当然,可能并没有读其下其 他文件目录或写等权限,但是仍建议一般选中此项。 2、Hide 'hidden'files'(隐藏“隐含”文件):在列表时不显示属性为“隐含”的文 件

第1章绪言 一、是否题 1.孤立体系的热力学能和熵都是一定值。(错△U=0,H=0,但△S,△G和 △A不一定等于0,如一体积等于2V的绝热刚性容器,被一理想的隔板一分为二,左 侧状态是T,P的理想气体,右侧是T温度的真空。当隔板抽去后,由于Q=W=0, △U=0,AT=0,H=0,故体系将在T,2V,0.5P状态下达到平衡, AS=-RIn(0.5P/P)=RIn2,= AH -TAS=RTIn 2, 44=AU-TAS=-RT In2) 2.封闭体系的体积为一常数。(错)