2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16
One of the important elements of the heating system is the radiator. Its function is expressed in conducting heat in housing, as well as buildings for other purposes. The heat transfer of a radiator depends on radiation and convection. The latter process is natural and independent. It is characteristic of gases and liquids.
For reference
Natural convection is not as effective, therefore forced convection is most often used to increase the heat transfer coefficient in modern systems. This process is carried out using a circulation pump.
Section capacity
If you are interested in the power of an aluminum heating radiator section, then you should read the documents for the device. If the volume is 0.5 liters, then manufacturers usually declare this parameter at 180 W or less. If the temperature of the heat carrier water varies from 65 to 70˚С, then in reality the thermal power of one section of the aluminumthe radiator will be smaller and will be approximately 140 W.
When getting acquainted with the characteristics of the battery, buyers quite often pay attention to the heat transfer conversion formula: ∆t 70°C=160/200 W. The difference between the average air temperature and the average temperature in the heating system is called ∆t. This suggests that for a ∆t of 70˚C, the room air temperature can be 20˚C, and the average temperature in the heating system should be 100˚C, while the return will be 80˚C in the return.
But such figures are quite difficult to achieve in reality. Therefore, taking the power of 1 section of an aluminum radiator, you will have to determine the heat transfer, taking into account the ∆t value of 50°C. As an example, consider the middle battery section with the following dimensions: 100 x 600 x 80 mm. It is capable of heating approximately 1.5 m2 area, which corresponds to a heat output of 140 to 160 watts. When choosing the right number of sections for a room, the condition and location of the walls should be taken into account. If the room is corner, and one of the walls freezes through, this fact should be taken into account.
Additionally about power. Calculation of the number of sections
Knowing the power of one section of an aluminum radiator, you can determine the number of elements. In this case, you need to use the following formula: K \u003d S100 / P. In it, the letter K indicates the number of sections. S is the area of the room, and the power of one section is indicated by the letter P. If we take into account the average power, which is 150 W, and the area of \u200b\u200bthe room is 25 m2, then the calculation will look like this: 25 x100 / 150. This will make it clear that 16 sections are needed for efficient heating of a room with the mentioned parameters. Using this formula, you can calculate the volume of the required number of sections to accommodate a particular area.
About the power of radiator sections for 500 and 350 mm
One section per 500 mm is the standard part of a conventional battery, which is most often found in apartments and houses, as well as offices. Some manufacturers mention in documents that the power of one section of an aluminum radiator can range from 180 to 230 watts. The more expensive the products of a particular manufacturer, the higher the heat dissipation of the battery will be. That is why chasing cheap Chinese batteries is not worth it. In addition, they have a short service life.
On sale you can also find a reduced battery, which will come in handy in a limited space. This applies to walls with large windows or areas with narrow pockets. The power of one section of the aluminum radiator in this case will be lower, since the coolant used is supplied in a smaller volume, and the battery area is smaller. The described value here ranges from 120 to 160 watts. The final value will depend on the manufacturer. Choosing the right radiator is essential. After all, if its power is insufficient, then it will be cold in the apartment, and if you hang a battery with a large number of sections, then you will waste electricity and gas in vain. However, the last factor is relevant only for private houses with appropriate heating systems.
Main Features
Choosing aluminum radiators, you can count on their efficiency and low weight. The latter will not cause inconvenience during installation and dismantling. To control the temperature, such batteries have a regulator.
To install the device, the master does not need to have special knowledge and skills. The specific thermal power of one section of an aluminum radiator, according to experience, is the largest among similar devices. Such batteries are very original and presentable, so they can be used not only in ordinary apartments, but also in luxury homes.
Negative reviews
Before you choose an aluminum radiator, you should read the opinions of consumers, which are not always positive. For example, some buyers note that water leaks are sometimes noted at intersection joints. The distribution of heat in such batteries is uneven. It focuses on the ribbed surface.
Customers also don't like the fact that the convection return is very low. Such a battery can last not long - up to 15 years. But some manufacturers have corrected this shortcoming by increasing the warranty to 25 years. Buyers quite often refuse aluminum radiators also for the reason that they are chemically active, so corrosion is a serious enemy for these devices. But manufacturers are introducing anti-corrosion protection into the production process.processing, covering the surface with a layer of oxide film.
Production Features
When you know the power of a 500 mm aluminum radiator section, it is important to ask about other characteristics, for example, how the battery is made. Such devices are made by casting or extrusion technology. The first method provides that all sections are made separately. As a result, the device turns out to be quite durable, since among the components there are silicon additives (about 12% of the total volume).
The casting process is carried out under high pressure. This method contributes to the fact that radiators can be made in a variety of shapes. Such batteries withstand operating pressure from 6 to 16 atmospheres. The water channels are somewhat widened to allow the water to flow as freely as possible. The walls are strong, as they have a rather impressive thickness.
The power of 1 section of a 500 mm aluminum radiator is not all that you should know about such a device if you plan to purchase it. For example, the manufacturing method affects the final characteristics. Battery production can be carried out by extrusion. This method involves the use of extrusion. All radiator components are made separately and then fastened together.
The collector is poured from silumin, all parts are well pressed and firmly connected. The extrusion method is cheaper than casting, but the radiator cannot be improved during operation.
Features of anodized aluminum heatsinks
What is the power of the aluminum radiator section, you now know. But before buying a heating device, it is important to ask what technology the battery was made of. If you have an anodized aluminum radiator in front of you, then you should know that the material undergoes better cleaning during the production process. This allows you to slightly change the structure of the metal. Anodized radiators, unlike pure aluminum ones, are almost not afraid of corrosion. Individual parts are connected to each other by couplings, and not by means of nipples. These couplings are located on the outside of the heater.
Anodized type aluminum batteries are smooth inside, which contributes to higher heat dissipation rates. In addition, such devices are able to withstand higher operating pressures. It can reach 70 atmospheres. However, annotated aluminum heatsinks are more expensive than plain ones. However, the latter have worse performance.
Features reviews
When you know the power of one section of an aluminum radiator, but you still do not know whether it is worth buying such a heater, you should familiarize yourself with the opinions of consumers about the features of operation. For example, such batteries are recommended to be washed with running water once a year. Before using it is importantmake sure the radiator is installed correctly and mated to the system with quick connectors.
It is impossible to install such devices in the same base with a boiler that has a built-in copper heat exchanger. Consumers emphasize that when copper and aluminum come into contact, a galvanic couple is formed. In this case, copper acts as a strong metal that attracts aluminum ions, turning it into a foil over time. The masters emphasize that this law does not apply to systems made of polypropylene or metal-plastic pipes. There is no direct contact between copper and aluminum.
Conclusion
Aluminum radiators are very common today. They can be made by pressing metal. The internal surfaces are highly smooth, which was achieved by coating the material with a special protective film.
Outside products are treated with powder paint. Water must enter the radiators, which undergoes preliminary purification. This will prevent oxidation. However, some modern manufacturers offer aluminum radiators that are pre-treated with a polymer composition. This reduces the risk of corrosion.
When choosing, however, it is important to pay attention to some technical characteristics. One of them is power. Knowing this parameter, characteristic of one section, you can calculate the number of elements in the battery for a comfortable stay in the room.
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