For the normal living conditions of people in houses and apartments, they should be equipped with a heating system, which can be both centralized and autonomous. If in small in the area of ​​structures, water in heating systems circulates naturally, then in multi -storey buildings it is necessary to use forced circulation. It is for these purposes that special NAOs are used, which are also called circulation. In addition, their use will significantly reduce heating costs. At first glance, it may seem that this unit has a complex design and is not easy to operate, in fact, the pump for heating looks like a conventional drainage installation. Its housing is made of stainless metal, and a pump from a rotor and a shaft with a blade wheel consists. This device works from the electric motor with which the rotor is set in motion and the shaft rotates. The principle of operation of the pump is elementary, since it is based on centrifugal force. Depending on the features of the work, circulation pumps are of two types. The dry pump is characterized in that its rotor has no contact with water. Its internal elements are separated from the electric motor using special dense protective rings. Such pumps are considered the most effective in the issue of water circulation, but they have a lot of disadvantages. The dry pump works very noisy, so it is recommended to install it in a separate closed room. In addition, it can create air vortex flows that pick up even the slightest particles of dust and dirt. This leads to the fact that stuffed rings can be polluted and fail. Dry pumps can have various designs, which is why they are divided into three types: block, console and vertical. The second type of circulation pump is wet. The entire unit is completely immersed in the water, which it pumps, and the electric motor is in a sealed shell. Such pumps are very easy to operate and repair, do not create noise during operation and can be automated. In this case, the unit can increase performance due to stepped adjustment. But such a pump also has one significant drawback - low efficiency. This is due to the fact that many elements of the device are sealed. Of course, when choosing a circulation pump, their advantages and disadvantages must be taken into account, but the main criterion in this case is the area and number of storeys of the structure. Kaç kez tekrar ettim - canlı bir futbol yayını izlemek istiyorsanız, o zaman egb üzerinden yapın, çünkü https://mostbet-azerbaycan.top/mostbet-ios-a-yukl-m/  Müşterilerin sahada neler olup bittiğini anlayabilmeleri için video yayın işlevine ve interneti zayıf olanlar için bir maç merkezine sahip olmasıyla övünüyor.