Heating circulation pumps principle of operation and types

Heating circulation pumps principle of operation and types In the category Heat Pumps Many people are interested in knowledge and learning about many subjects, this knowledge may be vital at some point in your life, attention enough, and dive into more detail more articles and learn more information about Heating circulation pumps principle of operation and types.

Heating circulation pumps, Solving the task of heating the House, need to take into account the number of square feet. If the area of the premises is calculated in their hundreds, not entities, if the building has several floors, the system of natural circulation of coolant does not cope with the tasks of heating. The pressure on these systems, as a rule, does not exceed 0.6 MPa, so you will be sure to put the pumps for heating.

They will increase the efficiency of the described processes. Best of all for these purposes suitable circulation devices-only they are able to make water circulation and provide the expected result.

Circulating pumps-principle of operation

On your device, pump circulation similar to drainage installation: casing made of stainless metal, has a ceramic rotor and shaft, fitted with a blade wheel.
Rotor electric motor actuates. This system takes away the water on one side and forcing in the pipeline on the other. Centrifugal force helps water to move through the system. The pump allows to overcome the resistance, which invariably occurs on separate sections of heating pipeline.
Circulating pumps are divided into two types:

  • Dry
  • Wet

Circulating pumps “dry” type

In the first type of rotor is not in contact with water, which is pumping the pump. His entire work surface is separated from the motor special protective rings. They are well polished and carefully fitted together.

Dry the circulation pumps are more effective, but at work creates a very strong noise. So often they are placed only in a separate, well isolated room.

Choosing a described model, you must consider the fact that when operating this unit creates air turbulence. Raised up particles of dust are easy to get into and damaging the o-rings, impair their integrity. Then the whole system fails. Therefore, the producers have taken care of protection between the rings of all time is the thinnest layer of water film. She plays the role of lubrication, prevents the destruction of the rings seal.

The individual elements of the design of the dry circulation pumps can be also divided into three types:

  • Console.
  • Vertical.
  • Block.

Console circulating pumps suction nozzle located on the outer side of the snail, and the pressure on housing in the radially opposite side.

Heating circulation pumps principle of operation and types

In vertical units pipes are located on the same axis. They are so called because the electric motor is positioned in a horizontal position, as in the first case, and in vertical.

The pumps of this type installed in the case if it is necessary to pump large amounts of water.

Circulating pumps “wet” type

This type of pump is different from the other models so that the rotor with the impeller in the liquid that the pump is pumping. In this part, where is the motor, rugged metal cups, which divides the rotor and starter.

Such a device is best suited for small heating systems. It produces less noise, requires no additional maintenance, it is much easier to repair, and if necessary, adjust the settings.
The only downside-the low efficiency. This is due to the fact that I can’t provide a sealing sleeve, which separates the stator and coolant. Therefore, when installing the heating system for private home use circulating pumps for heating grandfos with wet rotor and stator.

Models of the latest generation are “reasonable” Automation. It allows you to switch the windings and increase the productivity of the unit.

The most similar models are opting for stable or slightly changing water flow. Speed regulation helps to choose the optimal modes of operation, and thus saves costs of electricity that provides work of pumping equipment.

How to correctly set the circulation pump?

To circulation in the heating system was not broken, you must select the correct location for the pump. Need to find where in the absorption of water hydraulic pressure will always be redundant. There are several ways to artificially mimic this condition.

The first way-to raise expansion tank of 80 cm from the highest point of the pipeline. This can be done only if you have a good height of the room. It is advisable to install the expansion tank in the loft, but then it will have to additionally to insulate in winter.

The second way-to move up from the vessel with falling House and ever her where near worth the suction pipe of a circulating pump. As a result of this reshuffle creates ideal conditions for forced circulation.

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Heating circulation pumps principle of operation and types

Heating circulation pumps, Solving the task of heating the House, need to take into account the number of square feet. If the area of the premises is calculated in their hundreds, not entities, if the building has several floors, the system of natural circulation of coolant does not cope with the tasks of heating. The pressure on these systems, as a rule, does not exceed 0.6 MPa, so you will be sure to put the pumps for heating.

The third way-ever circulation pump to feed the pipeline, directly at the place of entry of the water vessel. But it can be done only in case when the model pump is able to withstand the highest temperature of the coolant.

And the last. It is important to correctly calculate the horsepower. If the heating system will cut the motor more power than necessary, pipes steadily will make noise. So you need to know before installation, which is the amount of water passing through a boiler for a minute, given the diameter of the existing pipe and the speed of the water. For this there are universal formulas that allow you to facilitate the selection of the pump.

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