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Heating

August 12, 2017 18:05

The scheme and the features of a closed heating system with forced circulation , video

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How to organize heating concrete structures, the master decides for himself.If it is a private dwelling house, the most occurring heating option - a closed system with forced circulation.Compared to open it possesses a number of significant advantages, and is therefore more common regardless of the structure dimensions, its purpose, and the complexity of the circuit configuration of the components parameters.

What is a closed heating system with forced circulation, which has the advantages of what features such a scheme - all these questions will be answered in this article.

Open System

But before considering its specificity, should understand the terminology.It is because of ignorance of some nuances of people who have no professional training, often confused in definitions.The fact is that not everyone understands the fundamental difference between a closed system (SWS) heating and open (OS).

Forced displacement of coolant (its circulation) can be arranged in one and the other.To avoid further substitution of concepts, you should immediately respond to a number of questions.

What is the difference between ES and OS?Any fluid expands when heated.Since the coolant is water (at least - antifreeze or analogues thereof), it is necessary to somehow compensate for the increase in pressure in the pipes, otherwise avoid depressurization system.For this purpose, the expansion tank circuit is included.The OS it open type, and pressure is controlled atmosphere.

Closed heating system

In a closed circuit is completely sealed, and the expansion of the compensation corresponds to its internal diaphragm (membrane).

What is the meaning of forced circulation?fluid movement is not due to the pressure difference between the output and the input of the heat source (as they say, samotokom), and carried out the pump, which is one of the components of the circuit.

comparing different systems, you can see that each has pluses and minuses, although the AP with forced circulation of the merits of a lot more.Its major drawback in only one - "binding" to the prom / voltage.If it is turned off and the boiler pump "stand up."

Note!When choosing this heating option it is necessary to foresee, how to organize an alternative e-mail / logistics.Therefore, the cost estimates should immediately include the cost of purchasing a stand-alone power supply.

Composition

circuit As can be seen from the figure, its main parts are:




  • 1 - heat source (any type of boiler);
  • 6 - membrane tank;

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  • radiators and piping;
  • 9 - the water pump.

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Note!The pump is advisable to install the boiler inlet (at the end of the route).In this case, it will have to pump chilled coolant, and therefore the life of the product will increase somewhat.

Additional elements - valve, valves, sensors (pressure, temperature) and several others.The need to install them is determined by the design features of the boiler and the specifics of the mounted circuit (its schema).

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principle

system is easy to understand his work in drawing.The direction of movement of coolant shown by arrows.

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The output of the boiler water is heated to the desired temperature of the pipe system passes through the battery installed in the circuit, giving it thermal energy.Since the system is closed, the fluid is returned.This ensures circulation and pump.The heat exchanger is made of cooled coolant, and it goes back to the loop.This process is continuous, and all the parameters of the system are controlled by the automation of the boiler.In principle, nothing complicated.

Species closed system

Since the peculiarities of the different schemes not directly related to the subject of this paper, we mention only some of the main differences.

-pipe

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As can be seen from the figure, all the radiators are included in the circuit in series (so-called "from Leningrad").The disadvantage is that the last in a chain of the battery will be significantly colder than the first.Therefore, these circuits are mounted in relatively small buildings.The obvious advantage - less consumption of materials (primarily pipe).

-pipe

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This arrangement allows a more uniform heating of all the rooms, without exception.But the cost of its installation is somewhat higher.However, it is a heating circuit the unit is considered to be the most acceptable to a private home, especially if there are quite a few rooms and 2 - 3 floors.

There are a number of other features such as closed systems - for wiring pipes (vertical, horizontal), the installation of the membrane tank (read more in the accumulator) and so on.But this is a separate topic, and who are interested in a particular embodiment, will be able to familiarize yourself on our website.We sum up all the above.

What opportunities does the AP with forced circulation

use as a coolant not only water, but also low-freezing liquids.This is important in cases where, for example, for heating the boiler involved not only residential houses, but also other (auxiliary) buildings located on the plot.Or for suburban buildings, if the owners are away, and the line e / de-energized supply.Use as same antifreeze coolant reduces the risk of the defrost system.

Connecting several additional circuits.

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great length pipes.The main thing - to choose the right power the boiler and pump.But the use of systems with natural circulation in houses with several rooms (floors) is less effective.

In systems with circulation pump can be mounted in a pipe of smaller section than the natural, and their lower costs.

high speed circuit warming.In this regard, with the analog samotokom more inert.

sealed membrane tank drastically reduces the likelihood of "zavozdushnivaniya" system.

Maximum heat dissipation due to the speed of movement of the liquid.It is for the time spent in the tubes does not cool down to such an extent as in the EC system.As a consequence, its secondary heating energy spent less.

Here, perhaps, and all you need to know in general terms about the heating system of the closed type with forced circulation of coolant.

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