文档介绍：主要设计任务:
绘图
计算
绘图
计算
能源与环境系统工程专业2011级课程设计
主要设计任务:
Xchanger suite换热器设计软件
地点: 东配楼四层
时间: 2014-2015学年春季学期前两周
负责人:杜文静
能源与环境系统工程专业2011级课程设计
Spiral heat exchanger螺旋板式热交换器
Chapter pact Heat Exchanger
紧凑式换热器
紧凑性是指换热器的单位体积中包含的传热面积的大小,单位m2/m3 (标准700 m2/m3 )
常见紧凑式换热器:
螺旋板,板式,板翅式,翅片管式,热管式等。
Chapter pact Heat Exchanger
主要结构部件:
螺旋形传热板,头盖,隔板,连接管,切向接管,垫片,定距柱,支座等。
Chapter pact Heat Exchanger
structure and working principle 基本构造和工作原理
Advantage: high heat transfer coefficient, small temperature difference, compact, easy manufacture and installation.
Low pressure drop, so the high design velocity can be adopt,
Water velocity 2m/s, gas velocity 20m/s.
High heat transfer coefficient could be 50~100% higher than that of the shell-and-tube. K is around 5000~1500 w/m2k.
Long flow path, which is of benefit to low temperature energy recovering. The minimum outlet temperature difference is around 3 centigrade.
Self cleaning.
Discussion
Chapter pact Heat Exchanger
structure and working principle 基本构造和工作原理
Disadvantage: maximum size is limited. Maximum pressure (~), field repair is difficult due to construction features.
公称压力<
公称直径<2200mm
Chapter pact Heat Exchanger