如何令热不触摸它

流体交叉流体中,流体之一通常是液体,而其他流体几乎总是空气体。本文章中不包括这种热交换器

本图shows counter-flowing fluids.  The blue color represents the fluid at the colder temperature.  The red color represents the fluid at the hotter temperature.  The gold is the blue fluid which has gained temperature from the red fluid or the red fluid which has lost temperature to the blue fluid.  Note that the temperature of the hotter fluid as it leaves the heat exchanger may be equal to the temperature of the colder fluid after it is warmed, or it may be different.  Among the deciding factors is how long the two fluids remained in contact with each other, separated only by the chamber walls in the heat exchanger.

热交换器材料组成可能由不同的金属组成,但从未使用过塑料和木料,热交换器的目的是从流体向流体传输热量,所用材料对热流的抗药性必须低,无热金属也是如此隔热.使用的具体材料取决于流体特征,特别是腐蚀性。例如,对每一种腐蚀性流体而言,不同类型的不锈钢可选取

Little or no maintenance is required (limited only to filtering the fluids to prevent sediment buildup inside the device) unless the fluids contained corrode through one of the plates.  If that occurs, the best thing is to replace the unit.  If one plate fails or a connection fails, you can be certain without any additional analysis that more failures are on the way.  So, just break down and replace the unit.  If you have a maintenance contract with a reputable maintenance contractor, they will replace the unit at their prescribed times to minimize their cost to repair the unit.  For example, while performing other tasks, your contractor may deem it timely to replace the heat exchanger.  This is a wise practice not only because it saves money, but it may also save you downtime.  There is no getting around that old adage, "Time is Money," so just replace it.

The useful life is the number of years the item will provide satisfactory performance without significant repairs.  When an item is at the end of its useful life, it will cease to perform optimally without frequent repairs.  When cost analyses are being performed on two or more choices, the initial cost of the item, the cost to install the item, all the maintenance costs associated with the item, and the cost to replace the items at the same interval must be analyzed.  The period of analysis is usually taken to be the minimum time it takes for the longest life item to be replaced at least once.  If utility costs are known, they also must be counted in the analysis.  In the case of plate-type heat exchangers, since there are no moving parts, depending on whether or not there are corrosive materials involved, the useful life of this type of heat exchanger can be taken as 25 years.

三种基本类型由构造定义 。 框架热交换器和板有框架板定位 。 板块与空格器隔开, 整组用螺栓绑定 。 因此它是框架. 和.板板块 。 下一类型构造是焊接板, 并最后折叠板块 。 每种构造配置都相同, 流水量将保持前文提到的状态 。 不同的流压决定不同的构造 。 每种类型都有自己的功能集 。

框架板服务于光滑地板加热系统、太阳能加热系统、雪融系统、家用热水系统(如加热水和另一个过程的废热)游泳池热水机、室外锅炉机、冷却塔隔离器、高压破解器、一些冷媒系统以及商业应用自由冷却器。焊接板主要在加工厂运行功能。

所有热交换器大小基于数项因素,包括但不限于:两种流体温度差、允许变化时间长度、流体流速、空间需求以及任何费用相关问题

某些装置的额外特有信息,请咨询维护承包商、工程师或制造商代表有关维护频率问题。设计问题未回答请咨询工程师