What to consider when choosing radiators for an apartment
All engineering networks have their own technological lifespan, and the heating system of a city apartment is no exception. To change it is necessary not only risers of the central heat supply, but also end devices of system - radiators of water heating. A trip to the nearest building supermarket or walks on the Internet only complicates the problem of choice: all such devices, if you believe in advertising, seem ideal.
We recommend that you begin with the technical characteristics of the product, since the remaining attractive qualities of your purchase can be found in a variety of models from leading manufacturers.
- First of all, try to calculate the performance of devices responsible for comfort and warmth in your home. It is not difficult to do this. According to the standards for our standard apartments, the thermal power of the device must provide 100 W per square meter of area. The heat output of one section( P) of the heating radiator is indicated in the technical certificate( say 0.185 kW), the yardage( S) of your living space is known( let it be 21 sq.m).Next, a simple formula: N = Px100 / S, i.e.for a full heating of the room, you need 185x100 / 21 = 11 sections of the selected radiator.
- Now it is clear that the heat transfer coefficient of the sectional device plays an important role, and it must be fought for.
- Corrosion resistance of the material of internal surfaces in contact with the coolant. According to this indicator, the basic materials of heating devices can be arranged in a descending line in the following way: cast iron - steel - aluminum.
- Choosing a radiator for an apartment makes you think about its heat transfer, in fact, the main indicator of the performance of any heating device. The coefficient of thermal conductivity of materials from the previous point is directly opposite, and therefore the question is transferred to the design sphere.
Selection of material and design of the heating radiator
Forced to consider only some of the disadvantages of various end devices of the urban heating system. Cast iron radiators for heating .Initially, a high rate of thermal inertia, a lack of reactivity to the regulation and control systems. Low thermal conductivity of the metal: up to 80% of the heat is transmitted by radiation, which, when the temperature of the working fluid decreases, negatively affects the heat transfer. Convective heat transfer practically does not work.
Steel panel. Thermally conductive properties are close to cast iron, while corrosive properties leave much to be desired. The inevitable precipitation of corrosion products and lime slagging of the conductive channels over time simply clog the supply pipes of these units.
Aluminum radiators for the apartment. In addition to the known weak corrosion resistance in an aggressive environment, there is one more drawback. Working pressure 10-15 atmospheres such radiators still hold, but at the maximum pressure of 30-35 atm can creep and give leakage at the docking nodes. Bimetal heating radiators .The devices are relatively new, but they have already won the sympathy of consumers. Technical characteristics of these models, we considered in a separate article, here we simply pay attention to the price factor. The average cost of comparable heat output of aluminum, cast iron and bimetallic sections is 300/370/600 rubles. The difference is, and yet. ..
Which radiator for the apartment we recommend
The analysis of the radiator market, customer testimonials and own experience allow us to give an optional message for the correct choice of modern heating equipment for your apartment:
- type: bimetallic with two convolution wings;
- manufacturer: from the rating of tested models;
- heat transfer section: 180-195 kW;
- overall depth: 80-100 mm;
- center distance: 450-500
- number of sections: based on the calculation.
Try, install such, perhaps, declared 50 years in your home will be warm and cozy, and we will rejoice together with you.
