The types of heat exchangers. The principle of operation of heat exchangers

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2018-03-22 11:33:11

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Not so long ago almost all heat exchangers had countryboy design, in which the environment flock to each other, moving through the tubes. The last elements placed one in the other. But today such a device the heat exchanger is a thing of the past. Such devices are quite cumbersome, however, operate quite effectively. Among their disadvantages include high consumption of the heated medium. Considering the types of heat exchangers, you should notice that now replace the above devices come new - plate speed units.

Working Principle of a plate heat exchanger

types of heat exchangers

Considering the types of heat exchangers, it is necessary to pay particular attention to the lamellar variety of such devices. Structurally, these devices are different from shell and tube predecessor. The surface area of the exchange of energy is increasing due to the impressive length of the coil, which will certainly cause a more impressive size of the device. If we are talking about a new heat exchanger, the object is achieved by a method of increasing the number of plates that have the same area. Modern types of heat exchangers have the same capacity, but in size they are 3 times smaller than shell and tube models. New devices provide an impressive flow rate of the heated medium, which is used for hot water supply. This led to the fact that the unit got its second name - it is a high-speed heat exchanger. These devices are composed of selling and supply nozzles used for connection of the heating medium, as the latter acts a coolant.

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Device and features

plate heat exchangers

The device has output and input connections of the heated medium. You may notice in the design of the stationary plate, which is located in the front. For the flow of water in the apparatus has holes in it. Will not operate the heat exchanger without sealing strip, which is represented by a ring and the heat exchange plate. There is the design of the rear movable plate and the upper guides. The instrument is equipped with a back support, a pin and a spacer, which is located on the contour of the plate.

The Described types of heat exchangers are used for heating of simple construction with pipes which are arranged on opposite sides of the device. Between the plates, which are on the two guides clamped a number of plates with a seal between them. On the plates to increase the surface of exchange is a raised corrugation. In some models, connection pipes are located on one side of the device, they are on the front plate, which, however, has no effect on the operation plate of the device. Plate heat exchangers work on the principle, which involves filling the space between the plates heated by the environment.

For more information about work

heat exchanger price

The shape of the spacers determines the order of filling in the same Department they open the water path, in another of the sections is the absorption of heat. In the operation of the devices of each section, in addition to last and first, you notice a rather intensive heat exchange through the plates on both sides. Medium flow through the section, heading toward each other. The heating medium enters the top and leaves through the bottom nozzle. As for heat, it should be the opposite direction of the heating medium.

Types of heat exchangers

oven with heat exchanger

In the market you can find today, and a cast iron heat exchanger, but there are other devices that are made of other materials. The variety of such devices are presented in wide range. Their use is not limited to one industry, the units operate today everywhere: in metallurgy, chemical industry, energy, thermal points, heating systems, air conditioning and ventilation.

Differences in the method of heat transfer

gas heat exchanger

If you want to install the stove with the heat exchanger, it is necessary initially to understand the varieties described in the article devices. So, they can be distinguished also on the method of heat transfer, in this respect, they can be superficial and mixing. In the first case, heat transfer occurs between different environments through the walls, made of special heat-conductive material. The contours remain completely sealed. If you are interested in the equipment surface, then you should know that there are regenerative and recuperative devices. In the latter case, the temperature exchange between the heat transfer occurs through the thin walls of the contours, whereas the flow has the same direction. In the second case, the flow direction may change. If you decided to install gas heat exchanger, it is necessary to pay attention to the mixing of types of devices. Heat transfer in them is a method of mixing two media, but devices of this typeused less frequently of the above.

Types of heat exchangers by region

iron coil

When the owner of a private or vacation home decides to install a furnace with a heat exchanger, it most often chooses countryboy system, which is composed of a bundle of tubes connected to the grid by welding and soldering. Another kind of – plate heat exchangers, which were discussed above, they have a heat exchange area provided in the form of plates. The last are interconnected with heat-resistant seals. Concentric coils are used for installation of cast heat exchangers, the working environment is moved on a curved pipe and the space between the pipes.

It is Impossible to overlook and helical devices, which are represented by thin metal sheets. Them in the manufacturing process rolled up in a spiral. The presented list is not exhaustive, among the most common, you can allocate and air and water appliances.

The heat Exchanger, the price of which can reach 7,000 rubles, presented today in a wide variety. To list all types of such units is simply impossible, so the above was only the most popular. The leader among them is plate.

Varieties of plate appliances

Plate heat Exchangers is presented for sale in a wide range, they can be collapsible, brazed, welded and polyarnyj. About the first species, it was higher, but as for the soldered variety, it is composed of corrugated metal plates made of stainless steel. These elements are joined together using brazing under vacuum conditions with the use of Nickel or copper solder.

Conclusion

Heat Exchanger (the price shown above) can be welded. Such devices are intended for operation in conditions of high temperatures and extreme pressure. They are used in installations whose parameters do not allow the use of sealing elements.


Article in other languages:

BE: https://tostpost.com/be/hatn-tul-nasc/19956-v-dy-ceplaabmenn-ka-pryncyp-pracy-ceplaabmennyh-aparata.html

DE: https://tostpost.com/de/gem-tlichkeit/19963-arten-von-w-rmetauschern-funktionsweise-w-rmetauscher.html

ES: https://tostpost.com/es/la-comodidad-del-hogar/19979-tipos-de-intercambiadores-de-calor-el-principio-de-funcionamiento-de-l.html

KK: https://tostpost.com/kk/domashniy-uyut/19950-zhylu-almastyr-yshtardy-t-rler-zh-mys-steu-princip-zhylu-almasu-appara.html

PL: https://tostpost.com/pl/komfort-domu/19927-rodzaje-wymiennik-w-ciep-a-zasada-dzia-ania-wymiennik-w-ciep-a-urz-dze.html

PT: https://tostpost.com/pt/o-aconchego-do-lar/19925-tipos-de-trocadores-de-calor-o-princ-pio-de-funcionamento-dos-permutad.html

TR: https://tostpost.com/tr/domashniy-uyut/19957-t-rl-s-e-anj-rleri-al-ma-prensibi-s-de-i-tiriciler.html

UK: https://tostpost.com/uk/domashn-y-zatishok/19948-vidi-teploobm-nnik-v-princip-roboti-teploobm-nnih-aparat-v.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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