Bimetallic radiators ;which is better ;User selection

first radiators produced from two metal (bimetal) appeared in Europe more than sixty years ago.These radiators are quite cope with the assigned function of maintaining a comfortable temperature in the room during the cold season.Currently, the production of bimetallic radiators resumed in Russia, in the European market, in turn, is dominated by a variety of aluminum alloy radiators.

Bimetallic radiators have better

Bimetallic radiators are frame made of steel or copper hollow pipes (horizontal and vertical), inside which circulates the coolant.Outside on the pipes attached to the aluminum fins.Their method is attached by spot welding or special injection molding.Each radiator is connected to the other section steel nipples with heat-resistant (up to two hundred degrees) with rubber gaskets.

design bimetallic radiator

The Russian city apartments with central heating radiators of this type perfectly withstand pressures up to 25 atmospheres (pressure tests up to 37 atmospheres), and due to the high heat transfer perform their function much better than their predecessors iron.

Radiator - photo

outwardly distinguish bimetal and aluminum radiators is difficult.Verify your selection, you can just comparing the weight of these radiators.Bimetallic due to the iron core is heavier than its aluminum counterpart by about 60% and you make a purchase correctly.

device bimetallic radiator inside

Video - Bimetallic radiator

Positive aspects of the use of bimetallic radiators

• Bimetallic radiators panel type fit perfectly into any interior design (houses, offices, etc.), nottaking up much space.Exterior radiator side can be one if both the size and colors are diverse sections (staining may be independent).The absence of sharp edges and too hot panels makes aluminum radiators and steel suitable even for children's rooms.In addition, the market offers a model that set without using brackets vertically by ribs additionally present.
• Lifetime radiators from an alloy of two metals up to 25 years.
• Bimetallic suitable for all heating systems, including the central.As you know, the poor-quality heat transfer fluid in municipal heating systems adversely affects the radiators, reducing their lifetime, but from bimetal are not afraid of high acidity and low quality coolants due to high corrosion resistance of steel radiators.
• Bimetallic radiators - the standard of durability and reliability.Even if the system pressure reaches 35-37 atmospheres, it will not damage the battery.
• High heat - one of the main advantages of the bimetal radiators.
• heating temperature control by a thermostat lightning occurs practically because of the small cross section channels in the radiator.This factor allows to halve the amount of coolant used.
• Even if there is a need to repair a radiator sections, thanks to sophisticated design nipples work will take a minimum of time and effort.
• number required for heating radiator sections of the room is easy to calculate mathematically.This eliminates the unnecessary financial costs in the purchase, installation and operation of the radiators.

negative aspects of using bimetallic radiators

• As mentioned above, the bimetal radiators are suitable for use with low-quality heat transfer, but the latter significantly reduces the term of service of the radiator.
• main disadvantage bimetallic battery - different expansion coefficient of aluminum alloy and steel.After prolonged use can cause creaking and reducing the strength and durability of the radiator.
• When using radiators with poor heat transfer can be quickly clogged steel tubes, the occurrence of corrosion, reducing heat levels.
• By the contested disadvantage is the cost of the bimetal radiators.It is higher than that of radiators made of cast iron, steel and aluminum, but considering all the advantages, the price is fully justified.

How to calculate the number of radiator

sections Thanks to a simple mathematical formula, you can calculate and find out how many sections you need a radiator for heating.

Before the calculations required to find out the area of ​​the heated room and the radiator capacity.The second value indicated on the packaging with the product or offer in the price lists of the radiator manufacturers.

So, to find out the number of sections of the radiator (A), should be the floor area (S) multiplied by 100 and divided by the capacity of the radiator (P).

A = S × 100 ÷ P

At room area of ​​20 square meters and 180 watts of power radiator obtain:

A = 20 × 100 ÷ 180

A = 1111

radiator connection option in the apartment

Installation (assembly) of bimetallic radiators

heating system design includes a pipe and heat sink directly.Compound radiator and pipes produced by spot welding.Assemble plumbers or other qualified personnel in a short time without serious damage of wall partitions.Possible self-installation with the necessary tools, devices and ideas about the order of the operations.Installation instructions from the manufacturer usually comes with a bimetal radiators.

As practice shows, a bimetallic radiators most successfully combined polypropylene pipes (reinforced with fiberglass or aluminum).When using pipes with deep aluminum reinforcement, use of the shaver and stripping process becomes unnecessary.This significantly reduces the time of installation of radiators.Less popular pipes for radiator connection from the bimetal due to leaks and appears frequently clog are iron (steel) and metal-plastic pipes in combination with collet.

Installation of bimetallic radiators produced at the place of the old dismantled after the preparation of the working area, including the removal of pipes from the riser, marking the place of the installation of a new heat sink and drilling holes for brackets.

Mounting brackets

- The distance from the bottom of the radiator to the floor taking in the range of 60-120 mm.If the radiator is installed above or below this height, the heat exchange rate decreases.In this case from the rear wall of the radiator to leave about 20 mm, and on top of the radiator to the sill should be less than 50 mm to improve the ease of installation and convection.

- traditional radiators are mounted horizontally beneath the window in the center.At the same time if you already have in the room radiators, their level must strictly comply.

After marking (with construction levels) on the wall of drilled holes for the brackets and fix the last dowel-nails and cement mortar.Brackets should be placed so that the hooks are freely passed between the horizontal collectors.In this case, the heat sink housing will be securely fastened to the wall.

Before mounting the bimetallic radiator equipped with everything you need: bleed screw (to remove excess air from the system) on top, and adapters Fittings in place of a radiator with the pipes connection.Next

water standpipe equipped with special cranes and installation of pipes produced (with a bend or without it), connecting the radiator and riser.

radiators Connection diagrams may be different:

- traditional one-way circuit or side connection .In this embodiment, the feed pipe into the coolant radiator, is connected to the nozzle located on top of the radiator.Accordingly, the outlet pipe is mounted to the lower radiator pipe.Heat losses with this method of connection is not more than two percent.

traditional layout of radiator connection

- Lower scheme .Practice, when the heating system is hidden or mounted in floor covering.Outlet pipe and feeding the coolant connected at opposite sides of the radiator, the lower nozzles.Heat losses reach 12%.

Bottom connection radiators

- diagonal circuit for radiators with a large number of sections.Coolant supply pipe is connected to the upper pipe and outlet pipe connected with the other hand, from the bottom.

diagonal wiring diagram radiators

Once connected, the system is filled with coolant.To this end, the stabilizing valve is closed by 2/3 to prevent water hammer.

Recommended use

Bimetallic radiators with decorative cover (two layers of heat-resistant paint) can not be cleaned with abrasive materials and powders.The color is recommended that no more than once in ten years.At the same time paint the thermostat is strictly prohibited.

Video - Removing the old radiator and installing bimetal

Bimetallic radiators, which is better

Bimetallic radiators on the Russian market are fully certified, but they differ not only by the company and the manufacturer of the country, there are small, but very important nuances, tothat you should pay attention when buying.

Price - one of the most important aspects for which consumers pay attention.But before you judge the quality of the goods for its price, it should be to figure out what constitutes the cost of the radiator.

most inexpensive bimetal radiators from presented by manufacturers from China and Russia.Price of one section does not exceed four hundred rubles.Low cost due to the simplified design, material savings in the production of goods.The operating pressure of the radiator just below the analogues produced in other countries, but the appearance is not perfect.

Compared bimetallic radiators of the price range from 400 to 600 rubles for each section, we meet two producers from Italy (Global, Sira) and another brand of Russia - RIFAR.Radiators these firms appear to be more aesthetically pleasing and attractive coated off-white or cream-colored shades.Some models are equipped with a thermostat or air vent.Different ways of installation and some of the nuances of production (center distance, equipment, etc.) is insignificant impact on performance (capacity) and reliability of the radiator.But all of them have proved to be on the positive side in happy consumers.

The special series RIFAR MONOLIT presented models of radiators, specially designed for operation at an operating pressure of up to one hundred atmospheres.If necessary, choose the radiator is not straight but rounded, should assess the quality and design series RIFAR FLEX .If your choice fell on the radiator with a core made of copper, having a high resistance to corrosion, the models of heaters represented the firm PILIGRIM .