• Posted Ulyana Tarasova
  • Date: 17 December 2012 at 9:52 am

How to intelligently select the heating battery in a house or apartment. Comparative characteristics of radiators

How to intelligently select the heating battery in a house or apartment. Comparative characteristics of radiators.

Getting to repair in his apartment, or starting finishing work in a private house, there is definitely a question of choosing and replacing radiators. If earlier with a questionhow to choose a radiatorit was all simple: either as standard cast-iron or welded from a pipe of circular cross-section, now with a huge number of proposals it is already worth considering this issue.

Initially, radiators are designed to maintain a certain comfortable temperature in a heated room. Taking into account our Russian climatic conditions, this is at least 3 months in the southern regions and 8-9 months in the regions of the Far North. And, based on the fact that the radiators are installed indoors, i.e.are an integral part of our interior, many people approach the choice of radiators purely from an aesthetic point of view.

And this is, on the one hand, the right approach, but there are many parameters that must be considered when askinghow to choose a radiator. And if you do not, you can get a lot of trouble. After all, for example, in high-rise buildings in the heating system there is a very large pressure and well, just a very dirty heat carrier. Imagine what will happen if the radiator breaks?

When choosing a radiator, there are several parameters to consider.

  1. Working pressure in the heating system;
  2. The quality of the coolant (its purity);
  3. Heat carrier temperature;
  4. Design of radiators.

Advantages and disadvantages of different types of batteries

Now in our market there are several types of radiators -aluminum sectional radiators,bimetallic sectionalsteel panel batteriesand well known to all -cast-iron(slightly modified). Each of these species has its advantages and disadvantages. In this regard, we consider in stages each species.

1.     Aluminum sectional heating batteries.

Aluminum Battery

The positive aspects of their application:

- made of aluminum, a material having a very good thermal conductivity. As a result, they very quickly take heat from the coolant and just as quickly give it to the environment;

- have a relatively small mass;

- due to the large area of ​​the fins have a very good heat transfer;

- the shape of the fins favors the creation of convection currents;

- have a very good aesthetic appearance and reasonable price;

- sections of various sizes in height are produced (center holes from 300 to 800 mm);

- easily assembled from sections into a battery of the required length, which favors their adaptation to any premises.

Along with a very large list of positive moments, there are also negative ones:

- aluminum batteries do not withstand very high pressure (working pressure up to 6 atmospheres, maximum pressure during pressure testing - 16 atmospheres);

- especially destructive for aluminum batteries, water hammer and sudden pressure changes, which are very often in the heating systems of high-rise buildings;

- Aluminum batteries are very sensitive to the purity of the coolant and its chemical composition. With increased acidity, a strong process of internal corrosion begins, even despite modern methods of anticorrosion treatment in the manufacture.

2.     Bimetallic sectional heating batteries.

Bimetallic heating radiators in appearance almost do not differ from aluminum radiators. Their main difference in the internal structure. In fact, bimetal batteries are metal batteries, lined with aluminum. The heat carrier flows through metal channels and transfers heat energy to aluminum and then to the environment.

Bimetallic heating radiators

The positive aspects of their application:

- as well as aluminum radiators have an excellent aesthetic appearance;

- have a good heat transfer;

- withstand a great working pressure (up to 35 atm, pressure of crimping - up to 52 atm.);

- Due to the metal core are not sensitive to the heat carrier of poor quality;

- produced by sections and with different interaxial distances, which allows them to adapt to the installation conditions;

- have a long service life (up to 20 years).

The only drawback of these radiators (batteries) of heating (in my opinion) is their high price. Compared with aluminum radiators, they are 15-25% more expensive. 

3.     Steel panel radiators.

This type of heater is a two stamped sheet (thickness from 1.1 to 1.25 mm), welded to each other. The stamping form allows to obtain internal passages through which the coolant flows. Height of sections from 250 mm. up to 900 mm., with a length of 400 mm. up to 3000 mm.

Panel radiators for heating

The positive aspects of their application:

- the best price from the entire segment of heaters on the market;

- simplicity of design;

- good heat dissipation due to the large area of ​​the battery;

The disadvantages include:

- they are afraid of the poor quality of the coolant (corrosion begins);

- operate at relatively low pressure (working pressure 6-8.5 atm.);

- standard sizes are made, and as a result it is impossible to increase or decrease the area of ​​the section without replacing the entire battery.

4.     Cast iron radiators.

Cast iron heating radiators probably know everything, since they were practically the only batteries in recent times.Cast iron is a very practical material that is little sensitive to the quality of the coolant, which withstands high system pressures. Currently, radiators (batteries) with a more modern design have appeared.

Cast iron heating radiators

Positive moments:

- due to the large mass, they have a large heat capacity and remain warm for a very long time, even after turning off the heating;

- work at a coolant temperature up to 130˚;

- adapted to the aggressive environment of the coolant;

- withstand high pressure (working - 9 atm, pressure testing -16 atm.);

- relatively low cost;

- durability of operation (up to 50 years).

The disadvantages include the following:

- do not withstand water hammering, as a consequence of brittleness of cast iron;

- before installation it is necessary to paint and broach;

- coloring is required after a certain time of use;

- very large mass of the radiator in assembled form;

- not a very decent design.

Thus, analyzing all the pros and cons of the presented radiators, and answering the question how to choose heating radiators, we can draw the following conclusion:

For a private house with an autonomous heating system and controlled coolant with aesthetic,practical side and to save money definitely fit aluminum radiators.

If you plan to use radiators in a multi-storey building with a centralized heating system, it is better to overpay a little and purchase bimetallic batteries so that they are not afraid for rupture and internal corrosion of sections.

If it is necessary to heat the garage, warehouse or office space, the purchase of steel panel radiators is the best choice.

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