Technical characteristics and properties of aluminum radiators

By Admin | Heating And Heaters
16 April 2016

Many of those who have their own house somewhere in the country or within it, is used for space heating battery of aluminum.Because aluminum radiators specifications are quite suitable for this.Next, sort through their characteristics and consider why they are so good it is for detached houses and cottages.

Radiators specifications


  1. What types of aluminum radiators, and how they are produced
  2. What are the technical characteristics of aluminum radiators
  3. features popular manufacturers and models of aluminum radiators
  4. Table: Specifications popular models of aluminum radiators
  5. Advantages and disadvantages of aluminum radiators
  6. Video: Installation of aluminum radiators

What types of aluminum radiators, and how they are produced

in the manufacturing process of these radiators into the molten aluminum to achievestrength additives add special silicon.From the resulting mass produce either individual sections or the collector

s.Consider the two main methods of manufacture of these heating devices - is a method of molding and extrusion method.


This method assumes that all sections do separately.They pour silumin (so-called aluminum with the addition of silicon).The content of silicon supplements does not exceed 12% - this is enough to strength.Moulding takes place at elevated pressure.The result is a section of various shapes.They are able to withstand from 6 to 16 atmospheres.To water freely passed on radiators make enhanced water channels.And the battery is strong, it makes the walls thick enough.

Sectional radiators
Separate sections hold together in one radiator.

extrusion method

Extrusion - is squeezing (to put it more understandable language).This method involves the production of individual parts of the radiator.Then they are fastened together.However, the extrusion process makes only the vertical parts.By making them of aluminum with certain additives.But the collector of silumin alloy is poured.Although sometimes it is also done by extrusion, once a certain width.Further details of all pressed firmly connecting them.This method is cheap, but the battery made with it can not be improved during use.

Extruded heatsink
Remove section of the radiator can not be such as to put extra.

Batteries anodized type

This is a separate type of devices from refined aluminum of very high quality.They are subjected to anodic oxidation, change the structure of the metal, thanks to which it almost touches corrosion.Connect the individual parts are not nipples, as usual, and couplings mounted from the outside.This gives smoothness of the inside of the anodized heat sinks.Therefore, heat loss have better than ordinary batteries of aluminum.Operating pressure is maintained appliances anodized type - 50 or even 70 atmospheres, but they are quite expensive.

What are the technical characteristics of aluminum radiators

Distance between

are standard values ​​of 500, 200 and 350 millimeters.They are available in abundance in the construction market.But there are radiators with a distance between the axes other than the standard.It can range from 200 to 800 millimeters.

The distance between the axles
Most often you can find radiators with a distance between the centers of the upper and lower manifold 500 millimeters.Their height makes somewhere 580 millimeters.

Buying radiator, pre-measure the distance under a window sill - it was to be to put it.It is impossible to fit the radiator back to back - can not freely circulate warm air, so the convection heating is difficult.

Selection of the radiator height
between the floor and the battery is left a gap of 10 cm (you can, however, and more).The same gap must remain and the top - to the back of the sill.Well, from the wall to 3 cm have to retreat - then absolutely everything is in order.

See that in width, all sections fit in the allotted space for the radiator.And if it turned out that the height or width of the heater does not fit well, it is better to take a different, a little bit smaller.For example, when the distance between the axes 350 mm height of the battery is more than 100 millimeters.Be sure to consider this caveat when buying.

pressure and two of its kind

radiator taken to indicate in the passport of the operating pressure and test pressure.The latter is much higher.And sometimes even the maximum pressure point.Dilettantes not immediately understand that all these characteristics mean.

But everything is simple: pressure called the working - something at which the battery will be used.For aluminum radiators standard value - 10 - 15 atmospheres.

networks in the central heating pressure is usually 10 - 15 atmospheres, and heat the arteries and 30 atmospheres - are not uncommon.Therefore, the use of aluminum radiators for an apartment with central heating is not safe.

But for your own home pressure in the boiler of domestic production is usually only 1.4 atmospheres.Sometimes it indicate in bars - these two units are similar.For boilers from Germany working pressure higher - about 10 bar.Here it is already possible to use aluminum radiators.

pressure, called the Compression often know even more important than the working pressure.After the summer (when the water was drained from the batteries) before starting the heating system should first check whether this is the sealed system.For this purpose it is pressurized, that is tested at elevated pressure which is higher than the operating, and a half times or even more.So standard crimping pressure reaches 20, 25 or 30 atmospheres.This procedure is typical for district heating networks.

Significant differences in operating pressure for private homes and apartment buildings explained simply.It shows the pressure level to which the water is able to reach the top.For example, one atmosphere (otherwise, one bar) pushes the water up to 10 meters.Housing three floors of this will be enough, but for a four - a little.But the utility is not always supplied with water by a press statement.Sometimes it rolls so that burst even the most durable and expensive batteries.

So it is best to buy heaters with a supply pressure.They not only can well withstand the pressure of the hot water in the heating system, but also will live a long time.Such a provision would also serve as a pressure guarantee more resistance and long-term health of your batteries.

Different manufacturers indicate in the passport of the different pressure units.As mentioned earlier, one bar corresponds to one atmosphere.And if the pressure specified in megapascals (MPa), then transfer it to the atmosphere, we multiply this value by 10. For example, 1.2 MPa corresponds to 12 atmospheres.

be aware of thermal parameters

One half given away aluminum panels heat - this heat rays.The remaining heat - convection, the image while moving air layers from the bottom of the radiator up.Due to the ribbed surface of the inside of the heat transfer sections obtained substantial.

Heat transfer
aluminum radiator heating the room in two ways - direct heat radiation and convection.

heat transfer coefficient is specified in watts.Its yield, as a rule, for one section.Take, for example, a battery with a distance of 500 millimeters between the axles.Heat transfer section it will be from 100 to 150 watts.Multiply by the number of sections - that's you and the total value of which being the main and thermal calculations.

must know that high heat corresponds to a lower inertia radiators.This helps to save finances, so in terms of profitability is aluminum battery lead.They left behind the classic cast iron, and fashioned bimetal.After release of heat from them above, and inertia - less.It is necessary to heat the water at the temperature, respectively, and the boiler wear slower.

little about

design radiators made of aluminum alloy, though not blinding luxury and high cost, often embody interesting design solutions.Therefore, they fit perfectly in a variety of interiors of modern apartments and houses.That people do not choose expensive fashion trends, and aluminum radiators, passed the test of time.Those not let you down in the hour, and the house will be decorated.

The life of aluminum radiators

Typically, manufacturers ensure that the battery will last about 10 years Aluminium - 20. Famous brands rasschedrivayutsya sometimes a quarter century.As stated warranty period will take place, it does not follow immediately carry batteries in the trash.Just periodically inspect them carefully peering to the slightest flaws.

Main specifications of aluminum radiators are:

  • distance between the upper and lower manifold (axle) - from 200 to 500 cm;
  • pressure (working) - from 6 to 16 atm;
  • power (heat) - from 82 to 212 watts;
  • mass of one section - from 1 to 1.47 kg;
  • capacity of one section - from 250 to 460 ml;
  • limit coolant temperature - 110 degrees;
  • guarantee - from 10 to 15 years.

features popular manufacturers and models of aluminum radiators

Manufacturer FARAL hails from Italy

To us it supplies two types of batteries FARAL Green HP and FARAL Trio HP.They have a distance between axes 50 and 30 centimeters, and a depth of - 9 and 8.5 centimeters.The number of sections in the collection is from three to sixteen.These sections are attached to each other with steel nipples.To put the gasket sealing.

Before leaving the plant undergoes a battery by applying pressure to them (excess) at 24 atmospheres.This check allows radiators perfect to withstand the operating pressure of 16 atmospheres.

Radiators KalidoR also Italian - firm Radiatori 2000 SpA

production is located in the city of Bergamo and is used in the manufacture of batteries most modern technology.Therefore, the characteristics of aluminum radiators made by this company are great.For example, there may be mentioned a good heat transfer and low susceptibility to corrosion.Durable their color, which makes using the method anaphoresis, which ends epoxy-polyester spray.Plant Tests performed at a pressure of 24 atmospheres, corresponding to the working pressure of 16 atmospheres.

Radiators are obtained strong, are very long and have a beautiful design.

Others "Italians" - a battery of ROVALL Group Sira Group

its popular models: TANGO, OPERA, ALUX, JAZZ, BLUES, SWING.For the manufacture of radiators Extruded aluminum tubes are taken.The battery has a wide range of colors, and their surface is specially treated.For Russian tests are conducted at a pressure of 30 atmospheres (accordingly, the working pressure - 20 atmospheres).

Using special technology, the company makes it possible to vary the height of the cells in the range of 20 to 250 centimeters.Therefore, they can be installed in any niche.

popular manufacturer - Fondital

He is also from Italy.But its battery Calidor Super is designed specifically for the countries of the CIS and Russia, so perfectly fits the natural environment of these countries.At its manufacturing comply with Russian standards (GOST R RU.9001.5.1.9009) and European standard (EN 442).Pour the radiators of aluminum alloy under pressure.The maximum resistance to pressure from within - 50 atmospheres.

increased diameter water channel does not clog radiators from not very clean water, and thick walls provide the necessary strength.

Table: Specifications popular models of aluminum radiators

* All values ​​are given in Table 1 for the section and are taken from the official websites of manufacturers.

** The specified thermal capacity at 70 0C.

Brand country Manuf. Model th Dist between axes, mm Dimensions H / W / D (section), mm Maxim.Operating pressure bar. Thermal power V volume of water in the section,


GREEN HP 350GREEN HP 500TRIO HP 350TRIO HP 500 350 500 350 500 430/80/ 80580/80/80430/80/95580/80/95 16 136180151212 0,260,330,40,5 1,121,481,231,58
Radiatori 2000 SpA


350R500R 350500 430/80/95577/80/95 16 144199 0,430,58 1,41,6


ALUX 200ALUX 350ALUX 500 200 350 500 245/80/100395/80/100545/80/100 92 20 155179 0,11 0,110,23 0,830,821,31


Calidor Super 350 / 100Calidor Super 500/100 350500 407/80/97557/80/97 16 144,193 0,240,30 1,31,32


Alum 350Alum 500 350500 415/80/90565/80/90 20 139183 0,190,27 1,21,45

Advantages and disadvantages of aluminum radiators

positive qualities

  • aluminum battery is very economical.
  • Their light weight does not cause inconveniences during assembly and disassembly.
  • There is a controller for controlling the temperature.
  • installation of heating devices is straightforward.
  • highest heat transfer coefficient.
  • These radiators look very presentable and original, so can be used in ordinary homes, and luxury rooms.

Negative points

  • on intersectional junctions possible water leakage.
  • heat is distributed very unevenly, mainly focusing on the ribbed surface of the sections.
  • Convection heat loss is very low.
  • they serve is not very long - up to fifteen years.However, some manufacturers have fixed it - they have increased the guarantee to twenty and twenty-five years.
  • possible formation of gases.
  • Aluminum is distinguished by high reactivity, so corrosion is its powerful enemy.To protect the battery from this enemy, manufacturers spend a special anti-corrosion treatment of the batteries.Or cover them with a layer of oxide film.

activity of aluminum in chemical terms - this is probably the main disadvantage of this material batteries.Therefore, when hot water circulating in a central heating system, there are chemical impurities as a result of a chemical reaction occurs accelerated degeneration of the walls of the radiator.And aluminum radiators are very sensitive to the instability of the pressure in the heating system.

Because of these drawbacks, such radiators are best used only in heating systems.There's something you really be sure that in a neutral hot water flowing through the radiators, there will be no "chemistry», pH coolant will be neutral, and the pressure in the system does not soar to limitless quantities.But in the flat radiators of aluminum is dangerous to install - even a ban is available from the relevant authorities.

Video: Installation of aluminum radiators

  • Reviews of aluminum radiators, their advantages and disadvantages

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How to Choose Radiators
How to choose the radiators, depending on the heating system and the basic parameters