利用热能将湿物料中湿分（水分或其它溶剂）去除，以获得固体成品的操作。 概述：染料中 RNS 干燥；制药中药品干燥；生物制品中溶菌酶干燥；感光胶片干燥；石油化工 中催化剂干燥；化肥厂中尿素干燥；食品厂中糖、奶粉干燥;造纸厂的纸张干燥等等

第三章颗粒与流体之间的相对运动 前言:(本章:本质上讲:属于流体流动过程,从方法或手段上讲:属于非均相分离过程,下册讲的 蒸馏、吸收、萃取等单元操作都是均相分离过程) 1、相:体系中具有相同组成,相同物理性质和相同化学性质的均匀物质。相与相之间有明确的界面

第三章非稳态导热 3-1非稳态导热过程 3-2集总参数法 3-3一维非稳态导热的分析解

Natural Convection Where we’ ve been Up to now, have considered basic concepts of natural convection, the governing equations and laminar free convection on vertical surface Where were going Consider empirical correlations for natural convection Heat Transfer

Heat Exchangers. NTU-8 Method Where we’ ve been∴ Analysis of heat exchangers using log mean temperature difference (LMTD)

Heat Exchangers, LMTD Method Where we’ ve been. So far have focused on detailed heat transfer analysis of specific conditions, such as external heat transfer coefficient Where were going: Investigate methods for larger system level analysis that combine all these modes of heat transfer in heat exchangers

Viscous flow The Navier-Stokes Equations Nonlinear, second order, partial differential equations

What is Convective Heat Transfer? You have already experienced it. Difficulty lies in generalizing our experience; filtering it down to a few laws: learning how to apply these laws to systems we engineers design and use Here is what i want you to do:

高效生物反应器的特点： (1) 传质和传热性能好； (2) 结构密封、防杂菌污染； (3) 设备简单、维修方便；(4) 生产能力高 (5) 能耗低； (6)检测控制系统完善； (7) 易放大； (8)生产安全

概述(Introduction) 搅拌的用途: (1)使两种或多种互溶的液体分散; (2)不互溶的液体之间的分散与混合; (3)气体与液体的混合; (4)使固体颗粒悬浮于液体之中; (5)加速化学反应、传热、传质等过程的进行