- 1 What better aluminum radiators and bimetal
- 2 What better radiators: aluminum or bimetallic? Bimetallic radiators: Specifications
- 3 What better aluminum radiators and bimetal
- 3.1 We proceed to the comparison bimetallic and aluminum radiators
- 3.1.1 What is the each kind of radiators
- 3.1.2 Allowing more heat - bimetal and aluminum?
- 3.1.3 On the ability to withstand a lot of pressure (especially hammering)
- 3.1.4 What better Bimetallic radiators or aluminum with respect to the coolant
- 3.1.5 The maximum coolant temperature - in any radiators more?
- 3.1.6 What safer, stronger and more durable?
- 3.2 What are the radiators to which systems are more suitable
- 3.1 We proceed to the comparison bimetallic and aluminum radiators
What better aluminum radiators and bimetal
Heating equipment made by manufacturers of a variety of technologically advanced products. Everyone, sooner or later there is a need to replace the radiator, especially during the completion of the heating season. Products are presented in a huge range and a number of visual and technical characteristics. The greatest demand is for two main options: bimetallic and aluminum, which is similar in many respects the structure, but has some differences. Many people are interested in choosing what is best Bimetallic radiators or aluminum, and how they differ from each other. In this we will try to understand.
In order to make the right choice, you need to know what operating fluid pressure in the home heating system, since both options involve installation of a variety of settings. Each of them is calculated on the allowable number of atmospheres and withstand certain temperature. For this preliminary study comparative characteristics. Experts say that the bimetallic best used in large buildings with central heating and aluminum suitable for low-rise buildings. But often, many gardeners are limited budgetary means, and if the house is not expected to increase extreme temperatures, pressure does not change, then choose the option that is cheaper.
Experts know exactly what best radiators - aluminum or bimetal - video:
The reaction to the quality of the coolant
The primary coolant in buildings of any size and rise protrudes water. For aluminum radiators it is dangerous not so much as in the incoming e impurity composition because they provoke corrosive process development and accumulation of limescale. For aluminum radiators particularly critical pH of 8 and 8 units.
Aluminum is able to allocate a chemical element - hydrogen, which is fraught with ejection of plugs and valves. To avoid such problems need to periodically bleed the air from the battery.
The device biometallicheskom steel pipes less fastidious to the flowing water. Therefore, the susceptibility to corrosion of different smaller value. But it is impossible to get into the water of oxygen, since it also catalyzes the formation of rust. The advantage of high heat transfer. It is noted that the section 200 gives watts of thermal energy, one part of which is supplied by convection, the other - the radiation. Inner ribs contribute to high heat output that is incomparable with the other types.
Bimetallic radiators are suitable for private homes, where there is the possibility to adjust the periods of switching on / off the heating. The room is warmed just for 10 minutes.
The bimetallic radiator heat is given off sections. Steel core reduces the total heat transfer, so it is below. Thermal inertia is also not great.
To decide the question, what is better or aluminum radiators -bimetallicheskie, many consumers seek the advice of professionals, while studying the detailed features.
For example, aluminum has a more stylish equipment neat view. Such heat sinks are composed of several sections connected nipples. Structure produced by molding sections from aluminum alloy with addition of silicon to high pressure.
They differ in the method of manufacturing as:
- separate sections,
- Sectional (extrusion) connected by bolts.
In the latter embodiment, the sealing is made with silicone or other materials. Location on the inside fins increase gives heat given area of 0.5 m². Reliability is also determined by the manufacturer.
Extrusion method is marked low quality, cheap and easy to release products. It is considered to be more durable cast construction.
Production bimetallic radiator is performed using two types of metal - aluminum, and steel. Aluminum alloy is applied to rib body. Robust steel and aluminum graceful combine high reliability.
Core (inner portion) to which the hot water flows is made of copper or steel. From the outside panel is flat, in - ribbing. diameter pipe has a smaller size, which contributes to rapid clogging. Design, appearance, compact size have aesthetic, satisfying refined tastes of the consumer. All steel components are arranged inside the structure.
General characteristics and limitations
Aluminum elements characterized by pressure, temperature indicators, indicator heat. Modern aluminum equipment carries the pressure of 6-20 atm., Which is used in standard apartments and country houses. Withstands heating to a temperature of 130 degrees. The most rapid heating of the room due to the high heat. Possibility to install in a variety of areas, thanks to the aesthetic design.
The disadvantages are problematic due to water hammer in the installation of an apartment building system. But manufacturers are producing more expensive reinforced models that carry, including a power shower. Copper fittings and aluminum creates a chemical reaction within the gasification, which are cleaned specifically defined automatic air trap. Between sections may flow in between. Characterized by poor corrosion resistance.
Synthetic properties of steel and aluminum combines the biometallicheskaya structure which is determined by the parameters of pressure, corrosion, heat, design decision. More than 90 atmospheres withstand burst pressure design and the core is capable of withstanding in the coolant 20 to 40 atmospheres operating pressure. Due to the achieved heat transfer of the aluminum coating (170-190 W). Also, due to steel (and in some models the core is made of stainless steel), they have high anti-corrosion performance and durable. Exquisite design and diversity in some models able to satisfy the most demanding consumer. Equipment can last more than 20 years, while maintaining the aesthetic, technical indicators.
The disadvantages are:
- lower volume of coolant, which may lead to an accident situation and savings of boiler equipment;
- when disconnecting heating instantly cools the air in the room;
- high price.
It is important to note that there are variations of this type of equipment, depending on the manufacturing material. Steel pipes are cheaper than copper. The use of copper pipes designs possible in heating with copper elements. Between themselves, they are divided into monolithic and sectional. The monolithic inner tube has a fixed length, withstand up to 100 atm.
The most popular are considered to be sectioned. Their main advantage is that the section can be removed always by adjusting capacity. They are suitable for private homes and apartments. Water for heating in them passes fewer times than in other designs.
Based on this information, it is necessary to determine first of all with individual characteristics, while paying attention to the peculiarities of installation. Considered products are comfortable to install. Their weight can withstand even drywall. Installation with plastic pipes is carried out with a set of keys, form tools. Bimetallic not subject to deformation, much different from the soft aluminum. they are also considered to be more robust, durable, capable of withstanding high pressure. metals difference may create reaction, causing gassing as in the other type.
The higher thermal conductivity of aluminum radiators, the price is lower, less weight. They are preferably installed in a private home, where the boiler is at a constant low pressure and a lack of pressure surges. When this water is cleaner, with no impurities is constantly stable temperature. These batteries will work quality for a long time. Most modern equipment manufacturers, including domestic pay attention to qualitative composition and level of contamination in the water heating.
It deserves special attention the quality of integrity, which provides reliable seals and the lack of pockets, which do not accumulate gases and sludge that provokes the development of corrosion.
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What better radiators: aluminum or bimetallic? Bimetallic radiators: Specifications
No matter how we tried to avoid it, but sooner or later every one of us is faced with such a problem, as a replacement radiators in your home. And if before the question of what do you choose to install the radiator, simply did not arise, but today manufacturers of heating equipment produced batteries of different materials with different technical characteristics and design. This diversity leads to the fact that many are wondering what the best radiators: aluminum or bimetallic? In order to answer this question, let's take a closer look at the features and characteristics of the batteries manufactured as the aluminum and bimetal.
Technical characteristics of aluminum panels
Choosing what to buy - radiators, aluminum or bimetal, should focus not only on price but also on the technical characteristics. Thus, the spacing between the lower and upper collector for devices made from aluminum, ranges from 200 to 500 cm, and the working pressure as stated by the manufacturer, they can withstand in the range 6-16 atmospheres. The maximum possible flow temperature of 110 ° C. The weight of one section may be from 1 to 1.5 kg, and the capacity - 250-450 ml.
Properties of aluminum radiators
As the name implies, these heaters are made of aluminum. The properties of this metal determine the main characteristics of the batteries manufactured it. Aluminum - a metal with high thermal conductivity, whereby the heaters have a high emissivity, which occurs due to radiation and by convection. Additionally, the material allows ease of manufacture thereof radiators with low weight. A small amount of water circulating in the sections, you can quickly and easily adjust the temperature by means of special thermal heads.
As a battery manufactured from aluminum
In the production of radiators of aluminum to increase the strength of special additions of silicon introduced into molten metal. From the resulting composition produced as separate sections and manifolds. Aluminum radiators can be produced by two methods: extrusion and casting.
extrusion, or more simply - extrusion fabricated vertical parts batteries, which are then bonded to each other. Sam collector squeeze or pour from silumin alloy. Then all the parts manufacturers necessarily compressed, thereby firmly connecting them to each other. This is the cheapest method for manufacturing radiators of aluminum, but later they can not be upgraded or "narastit9raquo; during operation.
casting at elevated pressure is produced separate sections that can withstand pressure in the range of 6 to 16 atmospheres.
We should also highlight anodized aluminum radiators, which are made of high quality metal. To increase the resistance to corrosion subjected to anodic oxidation, which changes the structure of the metal. For connection between the components are special couplings, dockable on the outer side, instead of the pin as usual. The inner side of the radiators is smooth, which contributes to their higher heat conductivity than that of conventional aluminum panels. Such heaters can withstand the operating pressure of 50 to 70 atmospheres, but the price is high enough.
Trying to understand what the best radiator, aluminum or bimetal, we note the following positive characteristics of batteries fabricated from aluminum.
- Ability to select from a variety of different models and colors, allowing you to create an individual and unique style of the house.
- Lightness and ease of transport and installation due to low weight.
- Excellent heat transfer, allowing to maintain a comfortable level of heat indoors even at a low temperature coolant.
- Affordable price range.
Despite the many advantages of aluminum radiators have a number of disadvantages. First, is the low stability of such devices to high pressure in the heating system and waterhammer and to mechanical stress. Furthermore, aluminum radiators can not be used if the heating system uses a glycol coolant.
Heaters of bimetal
Such radiators are made of two metals - aluminum and copper (steel), each of which has unique characteristics. With this battery such as steel resistant to corrosive processes, and as well as aluminum, have excellent heat-conducting properties.
Technical characteristics of the bimetal radiators
As demonstrated time and practice operating such heaters are excellent both in private homes and cottages with independent heating and in apartment buildings to the centralized heat supply. The modern bimetallic radiators have the following characteristics:
- spacing between technical collectors 200 to 500 mm;
- high resistance to pressure surges in the system, up to values of 30-40 atmospheres;
- The maximum possible flow temperature of 130 0 C;
- excellent levels of heat, in the range of 170 to 190 W;
- able to use almost any coolant, since the iron core does not enter into chemical reactions;
- small container of each section - from 0.1 to 0.3 liters;
- by weight of one section - from 1 kg and above.
Bimetallic heaters consist of a heating circuit (steel or copper pipes) through which heat medium circulates. This construction is set inside the outer housing, which is made of modern aluminum alloys. The outer shell is made in the form of one or more curved plates.
Battery, composite metal can be produced in two different ways.
Best bimetallic radiators manufactured by pressure casting of aluminum compound in the steel casing. They are durable, reliable, and have a higher level of heat.
A cheaper method of manufacture is that the steel core is set only in the vertical channels of the device. These radiators are called psevdobimetallicheskimi, and although a number of characteristics are superior to aluminum, but the strength and protection of the body have a fairly weak.
In search of an answer to the question of what is better radiators - aluminum or bimetal, we note the following advantages of the battery, composite metal.
- High resistance to various physical effects such as pressure differences and high temperatures in domestic heating systems.
- Resistance to corrosion and heat carriers of different chemical compositions.
- Narrow channels for coolant circulation contribute to the high efficiency of the device.
- The high level of heat transfer.
- The ease and simplicity of installation and future maintenance.
- Many different model and color solutions through which the battery can harmoniously fit into almost any interior style.
- Long service life. According to the manufacturer, up to 20 years.
The main drawback, which today have a bimetallic radiators - the price, which is the highest among the heaters of this type (from 400 rubles per section). However, it is compensated by a high level of reliability and long service life. Specialists involved service and heating systems in homes, note that one of the disadvantages of bimetallic monolithic panels with steel core is the corrosion (in the case if at the end of the heating season of drained water systems and there is simultaneous contact with both air and water ). In addition, the narrow channels for the circulation of coolant is often clogged and sealed.
Bi-metal or aluminum?
Man, do not engage in professional or building heating systems, can hardly be distinguished in appearance, aluminum and bimetal radiators, the difference is almost not visible. It's really difficult, because usually both types of these batteries look the same - as a flat rectangle, covered with enamel powder, white or colored. The entire surface of these heating devices is a heat exchanger and can be either monolithic or consist of sections, usually 6 to 12.
Today, manufacturers produce these heaters in a variety of models and design solutions, allowing them to build harmony in the interior of any premises.
As aluminum or bi-metal batteries have figured-rib structure, it should be noted that the surface practically does not accumulate dust exchangers themselves. The reason is that both types of radiators during operation not only radiate heat but also operate the convection heating of the room in which the set, and therefore a dust blown streams of warm air rising. However, convection has some unpleasant nuances, namely: air dried over the rooms, and the walls are poorly warmed. That's why experts recommend installing in a residential area combined heating system.
The main difference of bimetallic radiators of aluminum is more than a long life, which compensates for the relatively high price of such batteries.
In addition, in favor of the bimetallic devices say following their characteristics.
- Higher durability and reliability because they base is made of steel.
- Resistance to chemically different coolants.
- The ability to endure fluctuations and pressure surges in the heating system.
Another difference bimetallic radiators from aluminum is their weight. Thus, aluminum batteries much easier radiators bimetal, consisting of the same number of sections. It should also be noted that aluminum has better thermal conductivity and heat dissipation.
Comparing each other heaters of aluminum and bimetal, we can form an opinion about what is best radiators - aluminum or bimetal. The latter have, in all the positive characteristics of the first, also highly resistant to mechanical stress and corrosion. It is important to note that the scope of their use are different. Experts recommend the use of aluminum radiators in the private and low-rise buildings with autonomous heating system,
but the bimetallic batteries are perfect for connecting to the central heating system and autonomous.
Each type of radiators made of a particular material has its undeniable advantages, which may be manifested in full only at their correct installation and operation. Radiators made of aluminum is set when the low pressure in the system must provide the best possible heat transfer. In all other cases it is better to set the bimetallic device.
What better aluminum radiators and bimetal
That ended with grief in half the heating season, after which the issue of changing batteries rose to the fore. Leaky ancient cast iron radiators is time to send a well-deserved rest, putting instead something more modern. Private developers, the installation of heating, too, are often unable to determine the type of radiators. After hearing a shop, praising the most popular models, uninformed buyer is at a loss. And what better radiators - aluminum or bimetal, he did not. Perhaps a look at the matter objectively?
We proceed to the comparison bimetallic and aluminum radiators
What is the each kind of radiators
1. Aluminum radiators, neat and elegant, are composed of several sections connected nipples. Gaskets are available between the sections provide the desired tightness. Ribs located on the inside, can significantly increase the area of heat impact to 0.5 square meters. Radiators made in two ways. Extrusion method provides a cheap and light products are not of the highest quality (this method in Europe is not in use). More expensive but more durable radiators are made by casting.
One of the types of aluminum radiators.
2. Bimetal radiators are made of two different metals. The housing is equipped with fins made of aluminum alloy. Inside this body there is a core of tubes through which coolant flows (hot water from the heating system). These tubes are made from either steel or copper (the latter we almost never occur). Their diameter is smaller than that of the aluminum models, so the greater the likelihood of clogging.
Appearance bimetallic radiator is very aesthetic and design meets the most sophisticated demands. All steel components are hidden inside it.
Allowing more heat - bimetal and aluminum?
If you compare the heat, the aluminum battery immediately welling forth. They have one section is able to provide more than 200 watts of heat energy. Moreover, half of the heat is given in the form of radiation and the other half - way of convection. Owing to the ribs protruding from the inner side sections, the heat efficiency is still increasing. So in that sense there is no equal to aluminum. Note that it is also a minimal thermal inertia. Batteries included - and 10 minutes later, the heat in the room. In a private house this allows a good save.
Consider now the bimetallic devices. Release of heat from one section depends on the model and manufacturer. It is somewhat lower than the all-aluminum radiator. After the core of the steel reduces the total heat transfer, which may be one-fifth less than the aluminum radiator of the same dimensions.
As a method for heat recovery, it also includes a convection and thermal radiation. And the thermal inertia at them too small.
On the ability to withstand a lot of pressure (especially hammering)
Here aluminum disappoint - the figures of its working pressure is not very impressive. Only from 6 to 16 (some models to 20) atmospheres, which may not be enough to withstand pressure surges in a central heating. A surge of salvation and do not be - the battery burst like an empty walnut shells, and will be in the apartment a big hot flood. Therefore it is not worth the risk - in high-rise buildings do not put aluminum radiators.
Bimetallic pattern having a solid steel core inside, the pressure of high pressure to be prepared. From 20 to 40 atmospheres - it is quite good. Even if the valve at the pump station will be in an accident on the track is closed or opened lightning they are not damaged. It bimetallic radiators are most reliable in unstable pressure in the system when the likely occurrence of water hammer.
This parameter is important in case if you choose radiators apartment with central heating system. If you choose data radiators private home, this option is not a disadvantage for aluminum radiators, t. To. In the local heating system is not excessive pressure.
What better Bimetallic radiators or aluminum with respect to the coolant
Aluminum gladly enter into a variety of chemical reactions, so the water in the central heating for him - just a "treasure." It in fact contains many chemical additives that may soon be almost anything and stay away from the walls of the battery - corrosion eats them. Once the pH of the hot water flowing in the system exceeds 8 units - expect trouble. But keep an eye on this indicator is not possible with centralized heating. And in the course of chemical reactions aluminum extracts hydrogen that is a fire hazard. Therefore absolutely must constantly play off of these air batteries.
The steel pipe in the middle of the bimetallic radiator less demanding on the quality of water flowing through them. Because steel is not so chemically active as aluminum alloys. Corrosion, of course, until it gets, but not so soon. In addition, manufacturers coat it with a special protective layer. A stainless steel is sometimes used, but this is quite expensive. But in any case, a bimetal radiator is protected from too active chemical coolant. The only danger - getting the oxygen in the water. That's when the steel starts to rust, and very quickly.
The maximum coolant temperature - in any radiators more?
The question is natural - often our batteries "burning fire" so that never will touch. So, the aluminum can withstand hot water up to 110 degrees - is the average. For bimetallic articles the figure somewhat higher - 130 degrees. Therefore, they are winning.
What safer, stronger and more durable?
Once again, the leader pulled out of two metal radiators - because they combine the best qualities of each. Such devices serve 15-20 years, no less (of course, we are talking about the quality products of reliable brands). Aluminum their counterparts, usually distinguished by half shorter service life - up to 10 years.
Aluminum and bimetal comfortable enough to install, as are lightweight (compared with the same cast iron). even drywall can withstand such a low weight - very powerful no brackets needed for attaching them. If plastic pipe for installation needs only a set of keys and fittings. Yet bimetallic battery easier to mount - for steel pipes can not undergo deformation, unlike aluminum - soft metal.
Price bimetallic radiators by one-fifth, or even one-third higher than that of devices made of aluminum. This is quite a significant difference. It is for this reason have not yet so widespread in our apartments bimetal products - not everyone is available. Bimetallic devices have a higher flow resistance than aluminum. Therefore, the energy to pump the hot water need. That is higher than the cost of operation.
And again, about four-fifths of the radiators of this type are brought to us from China. This, of course, does not mean that each of them is certainly bad, but sometimes makes you wonder.
What are the radiators to which systems are more suitable
1. Now, review and compare the main characteristics of the radiators, and you can make conclusions. To begin, find out which is best radiators - aluminum or bimetal - for apartments in high-rise building. It uses a central heating system.
- The pressure in the system can vary dramatically, reaching the transcendent values. Hydroblows possible.
- Temperature is also not stable, sometimes greatly changing during the heating season and even days.
- The composition of the coolant is not very clean. It has a chemical impurities and abrasive particles. One can hardly speak of a pH of not more than 8 units.
For all these reasons, you can forget about the aluminum panels. Because it destroys their central heating system. If electrochemical corrosion will not eat, then the pressure will finish temperature. A water hammer will do the latter, "control shot". Therefore, choosing the two types of radiators (aluminum or bimetal) only on the last stop.
2. Now consider the heating system installed in a private home. Good operating boiler produces constant slight pressure not exceeding 1.4 - 10 atmospheres, depending on the boiler and system. Pressure surges, and the more water hammer, is not observed. Water temperature is also stable, and its purity is not in doubt. It will not have any chemical additives, and the pH value can always be measured.
Therefore, in such an autonomous heating system and can put aluminum radiators - these devices will work just fine. They will cost inexpensive, have excellent heat dissipation design them attractive. In stores you can pick up the battery, made in Europe. It is preferable to choose a model made by casting. Bimetallic battery is also suitable for those who live in their own home. If there is a desire and enough money, you can put them.
Just remember that a lot of fakes on the market. And if the model (whether aluminum or bimetal) differs suspiciously low price, it is already possible to guard. Not to be trapped, make sure that on each section, and on the package (high quality and full color) was the manufacturer's markings.