Features and specifications of bimetallic radiators

By Admin | Heating And Heaters
17 April 2016

About bimetallic radiators, we learned long ago - at the beginning of this century, gaining momentum.And they have already caught the fancy of our countrymen more traditional cast-iron battery.Not only that - they are now popular and aluminum radiators and steel.And all because of that strong bimetallic radiators have excellent characteristics.Want to know what - read on.

Specifications Bimetallic radiators


  1. Features and variety of bimetallic radiators
  2. detail about the characteristics of bimetallic radiators
  3. Now, about the shortcomings of the radiator bimetal
  4. How producers bimetallic radiators can betrust
  5. Table: Comparative characteristics of different manufacturers and models of bimetallic radiators
  6. How to calculate the required number of sections of the battery
  7. Video: Technical features of bimetallic radiators

Features and variety of bimetallic radiators

Each bimetallic heating battery istubular steel and aluminum panels.Whereby he

at is transferred very efficiently, without getting lost in vain.Hot water passing through core consisting of a steel pipe, rapidly heats the aluminum sheath and accordingly the air masses in the room.

curly Aluminium shell of this core is not only elegant and stylish looks, but also helps to better distribute the heat.In addition, through the use of aluminum battery gets very easy (especially when compared with the heavy iron analogues).This gives extra comfort during installation.And the intricate shape of the body looks great, and greatly increases the heat transfer.

The structure of bimetallic radiators
steel pipes constituting the core, very strong - they quietly withstand pressures of 20 to 40 atmospheres, and the temperature of hot water - and 110, and even 130 degrees Celsius.

Specific limits the operating pressure and temperature can be found by looking at the passport instrument.After all, it depends on the model, and from the one who has made this model.

Today at the store you can buy batteries bimetallic two varieties:

1. radiators, which are one hundred percent bimetallic.This means that they have a core of steel tube surrounded by an aluminum sheath.They are distinguished by high strength, leakage is excluded.These batteries are manufactured by Italian companies:

  • Global Style;
  • Royal Thermo BiLiner.

their works, and Russian producers - for example, the firm Santechprom BM.

2. Polubimetallicheskie - radiators, which only half are bimetallic.Formed of steel pipe only, vertical reinforcing channels.Wherein aluminum is partially in contact with water.Such half Bimetallic radiators give off heat to 10 percent better than the previous model.And they cost 20 percent less.

release them:

  • Russian manufacturer Rifar,
  • Chinese - Gordi,
  • Italian - Sira.

Experts have not yet come to unanimity, discussing which of the two types of radiators for central heating is best, what - for individual heating.Thus, the technical characteristics of the bimetallic radiator allow him not to be afraid of "chemistry" in the city water.But with increased water pressure will behave better than aluminum.In an experts agreed that if you have at home the old heating pipes (them more than 40 years), it is best to take the bimetallic battery.

Sectional or one-piece?

bulk of such radiator is composed of a number of sections.That is, first, each of the sections is done completely, and then connect them nipples.This is done in the factory, the total number of sections - even.

skilled quite a force, if necessary, to remove any excess, or add the missing section.

However, except for the sectional, are on sale and whole battery of bimetal.The core is made of steel pipes once the desired size.Then it was "wrapped" in a decorative coating of aluminum.This battery does not burst, even if the pressure reaches a hundred atmospheres.

detail about the characteristics of bimetallic radiators

Choosing radiator, you need to study a coveted passport model.And now - about what the important parameters are listed there.

heat dissipation

amounts of heat given radiator when the water temperature plus 70 degrees Celsius, measured in watts.The mean value of heat transfer from the battery of the bimetal - from 170 to 190 watts.It is just gorgeous.

Heat radiator bimetallic
Heat transfer takes place either by heating the air, and thanks to the special design of the radiator - by convection.

withstand the pressure at work

It is from 16 to 35 atmospheres, depending on the model and manufacturer.If the central heating system, the standard pressure is not greater than 14 atmospheres, and in the autonomous system - no more than about 10 atmospheres.To the battery does not burst when the pressure increases, usually the manufacturer specifies this option with the stock.


This distance (in millimeters), which is spaced on the upper reservoir of the radiator from the bottom.Typical values ​​are: 800, 500, 350, 300 and 200 millimeters.This diversity allows you to choose a battery that will fit well into the existing wiring of heating pipes.

most often in demand radiators with 50, 35 and 20 centimeters between the axles collectors.

coolant temperature limit

Basically bimetal radiators can withstand hot water up to 90 degrees.Sometimes the manufacturer is slightly disingenuous, promising that the boiling water 95 degrees will transcend batteries.It is not necessary to believe it - more than 90 0C none of the manufacturers are not issued.By this indicator should take a look - it depends on the coefficient of heat transfer.

reliability and lifetime

Given the characteristics of bimetallic radiators, for twenty years, you can safely use them.No service is not required.That's a pretty good time.

Easy installation

Section data radiators absolutely identical.This allows you to install them even to the left of suitable heating pipes, at least on the right.Where appropriate tube is connected to a radiator pipe.From the opposite end of the mounted cap, which completes the bleed screw (side) and another stopper (bottom).

Crane, named for its inventor - Majewski - a very convenient device.At the beginning of the heating season is often a problem with the "airing" of the system - due to the air remaining in the pipes, the batteries are cold.Bleed screw allows you to bleed the air from the radiator once without turning off the entire riser.What's good - you can do it on their own, without the help of induced masters.

addition to the above, also produced with pipes and radiators located on the lower side.These valve connected to a thermostat that controls the temperature of the air in the room.Sockets, plugs and bleed screw supplied each bimetallic radiator.It also relies, and a set of brackets to install the panels on the wall.

Now, about the shortcomings of the bimetal radiators

The most significant drawback of these batteries can be called their high cost.They are much more expensive than conventional cast iron radiators.However, products from bimetal much neater look, fitting well into the modern interior.And life expectancy, they outperform other types of batteries.

not good and that when exposed to water, and the air at the same time the core steel tubes can start "eat" corrosion.And this happens when during repairs or accident drained the water from the heating system.And rust from pipes and anti-freeze, which often is present in the heating systems of small houses.In this case, from the bimetallic cell battery should be abandoned - it is better to take a one-piece, or all aluminum.

acceptable and that option - radiators with copper core and aluminum body.The oxide film on copper tubes strong enough - it will save them from corrosion.You can instead of the copper core and the stainless steel used - also a good option.

Specifications bimetallic radiator some manufacturers

1. reliable and high quality, but expensive batteries making Italian company Global Style.Moreover, the technical characteristics of bimetallic radiators made by this company can be called perfect.Russian buyers have long appreciated the battery, knowing that they are endorsed by experts from the Institute of plumbing and designed for Russian conditions.For the second line of the three models saw the light.Ten or twenty-year warranty provided by the manufacturer.

large coefficient of heat transfer (no worse than the models of semi bimetal) are famous for Global Style Extra batteries and Global Style Plus.They are beautiful and durable, but expensive.Models simpler and cheaper slightly worse transfer heat and less elegant, but also look good.They are neat and small, and have a very decent performance.An even number of sections, painted in warm shades of white, from 6 to 14.

2. Italian company Sira makes the battery more than half a century.Her "horse" - the floor bimetallic products with high emissivity.Radiators company produces three varieties.Enough boring square shaped products, batteries with beautifully contoured smoothly rounded corners and a model called "Gladiator."

Sira Gladiator
last form is quite unusual and creative.

Odd section batteries (can be from 4 to 10) are painted in warm shades of white.Warranty - 20 years.The factories of the company are not only in Italy.Some of them are located in China :).

3. Russian company Rifar (Orenburg region) makes the battery relatively recently - since 2002.But in the domestic market, it has already gained sympathy and successfully entered the CIS level.Its products - seven types of radiators polubimetalla.Especially popular model of "Monolith" (a new development, which has a patent) and "Rifar Flex" (has the possibility of bending under the bay windows).

Bright white sections of these radiators are supplied in batches of 4 to 14 pieces.Rifar guarantees trouble-free product life for 10-25 years.In stock usually has three major models.The rest of the range is available to order.

Table: Comparative characteristics of different manufacturers and models of bimetallic radiators

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

STYLE 350STYLE 500STYLE PLUS 350STYLE PLUS 500 350 500 350 500 425/80/80575/80/80425/80/95575/80/95 35 125168140185 0,160,20,170,19 1,561,971,51,94 110

BiLiner Inox 500BiLiner 500 500 574/80/87 20 171 0,2 2,01 90

TENRAD 350TENRAD 500 350500 400/80/77550/80/77 24 120161 0,150,22 1,221,44 120


RIFAR Forza 350RIFAR Forza 500RIFAR MONOLIT 350RIFAR MONOLIT 500 350 500 350 500 415/90/80570/100/80415/100/80577/100/80 2020100100 136202136194 0,180,200,180,20 1,361,841,52,0 135

Gordi 350Gordi 500 350500 412/80/80572/80/80 30 160181 0,210,3 1,41,7 110

Gladiator 200Gladiator 350Gladiator 500 200 350 500 275/80/80423/80/80 30 90140185 0,10,130,42 0,650,851,6 110

How to calculate the required number of sections of the battery

For example, consider Russia and its middle lane and the usual panel high-rise building.Multiply the area of ​​the room is 100 watts, and then divide that number by the amount of heat released by one section.

If the center distance is 500 mm, the calculation would be a breeze.Divide in half the area of ​​the room - and everything.For example, a room of 12 square meters.We have 6 sections with heat output of 180 to 190 watts.10 percent have to throw on the last or the first floor, corner room large window (more than two meters square) and thin walls (less than 250 millimeters).

The cottage, built in the country, will have to tinker with the calculations.First, we find out coefficients of thermal conductivity of each material from which the house is built.This is not only a wall but also the roof and floor.To do this, preferred to invite a professional from a reliable company.The skilled artisan and calculate everything accurately, and the battery will advise is suitable for your home, and do not require extra money.

Video: Technical features of bimetallic radiators

  • reviews bimetallic heating radiators and their use

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