什么是冷却塔？

一个冷却塔extracts heat out of process cooling water and pushes it into another medium, usually air, so that the process cooling water is cooled and ready to be recirculated.

冷却塔如何工作？

在塑料加工中，冷却过程从冷却塔的底部和各种设备中的一个或多个冷却电路（即加工机，模具，，，干燥剂干燥机，，，，水冷冷却器， ETC。）。该工艺吸收水并将热量远离设备，从而使工作温度保持在最佳加工所需的范围内。

这种温暖的“返回”水需要冷却，顾名思义，这就是冷却塔所做的。

“开放循环”冷却塔

蒸发冷却塔

最古老，最简单的冷却塔可通过蒸发有效地冷却水。温暖的返回水被泵入塔的顶部，然后流动或喷在一系列挡板上，以破坏水流以最大化其表面积。水量相对较少，水蒸发到空气中，以潜热能量的形式吸收大量的工艺热量。结果，剩余的水被冷却，然后自由流入塔的底部，准备再循环。

诱导草稿或“反流”冷却塔

为了加速蒸发和冷却过程，许多蒸发冷却塔配备了顶部的风扇，这些风扇从塔楼的底部吸取了空气，将其从挡板和水流中拉到。这样的冷却塔称为诱导式水箱或“反流”冷却塔，因为空气沿水的相反方向移动。实际上，Conair的所有蒸发冷却塔都采用逆流设计，包括：

Because evaporative cooling towers like these spray the cooling water into open air, they are called “Open Loop” systems. And, while there’s no doubt that evaporative and counterflow cooling towers like these do an excellent job, they do have several significant operating costs. First, evaporation costs water, since the process water lost to evaporation must be continually replenished, and this can be undesirable in areas where water is in limited supply or where utility costs (water and sewer) are high. Second, counterflow fans consume electricity—another utility for which processors may pay relatively high prices. And third, chemical treatment of process water is usually needed to prevent the buildup of mineral deposits in piping and process equipment that is exposed to cooling water.

“闭环”冷却塔

为了避免这些问题，塑料处理器可以转向冷却塔技术，这些技术几乎没有或根本没有水分损失。这些冷却塔的设计是“封闭环”，因为冷却水（或在某些情况下，诸如乙二醇冷却液等过程流体）永远不会暴露于环境环境中。

什么是流体冷却器？

The simplest of these is a basic fluid cooler. These coolers pump warm “returning” water through a大型热交换器——系统的管翅片板内举行resembles a large radiator. One or more fans draw air up and through the panels, absorbing heat. While fluid coolers provide some cooling capacity, they cannot generate “leaving” water temperatures as low as evaporative cooling towers can. So, their use may be limited unless supplemental cooling equipment, such as portable chillers, are used to lower process water temperature further.

什么是绝热塔？

这些塔式冷却器为处理工艺提供了几种选择，用于管理其工艺水冷却需求和公用事业成本。

像流体冷却器一样，充气塔冷却器使用闭合电路，循环过程流体通过鳍的热交换器，风扇在其中吸收环境空气以吸收热量并冷却流体以进行再循环。在凉爽的气候或相对较高的过程温度可接受时，风扇燃烧的空气可能会提供足够的冷却能力。

当需要更大的冷却能力时，Adiabiatic Tower冷却器可以通过将少量水喷到鳍片散热器面板前面的特殊蒸发面板上来提供。当空气流过这些湿面板时，它会蒸发，大大降低了空气的温度，因此它可以带走更多的工艺热量。这样，绝热的冷却塔就可以使水温几乎低于蒸发冷却塔的水温，而蒸发量很少。控制积极监测过程水温，并自动调整风扇速度和水流到湿面板，以平衡水和能量用途与过程冷却要求。

Conair提供了一系列的绝热冷却塔EarthSmart ESTW Series，具有17至195吨冷却能力的能力。

If you’ve got questions about process fluid cooling tower systems, Conair has answers. Just给我们留言或给我们打电话。