August 12, 2017 18:06
Sooner or later, the owners of apartments, cottages, as well as specialists of warehouse, retail, office and other rooms face the problem of acquisition of radiators.Regardless of changing the battery is installed or a new heating system, but educated calculation of the required number of partitions of any type of radiators will create an optimal climate for residence or temporary stay of people in the room, as well as to provide an optimum temperature for the storage of goods.But before you get your radiator, you need to determine the size of the product and the type of metal, because the thermal conductivity of the material is not the same at all.
Content
radiators currently, the main material for the manufacture of radiators, a photo of which is presented in the article are the steel, iron and aluminum.Given that the different properties of the materials used in the manufacture of radiators affect the performance characteristics of the finished product is not the same, the diversity of batteries combined in 4 groups.
batteries, made of cast iron, are in high demand for several decades.However, unlike the old specimens, the current models are more aesthetic and allow succinctly fit them into the interior of a different style orientation without the use of protective screens.
Advantages:
Disadvantages:
Despite all the advantages and disadvantages of cast iron radiators are ideal for both stand-alone and for the central heating system.
huge variety of steel radiators, produced by domestic and foreign manufacturers, divided into:
Advantages:
Cons:
Steel radiators are most popular installation in private homes or rooms heated by an autonomous system.
Batteries of aluminum began to produce relatively recently.Compared with products of iron, steel, aluminum batteries differ quite attractive design in the most diverse performance.
Pros:
Cons:
Despite a number of positive and negative aspects, some operational characteristics of radiators made of aluminum depends on the method of manufacturing the product.
Currently, aluminum radiators are manufactured by:
A variety of aluminum radiators are the anodized products, the production of which is made of metal, held a better cleaning and subjected to anodic oxidation.Unlike simple aluminum, anodized radiators have a relatively high resistance to chemicals present in the central heating coolants.Furthermore, the compound did not separate sections carried by nipples and couplers, latched externally product that increases the strength of the battery before the sharp pressure surges in the system.However, there are anodized devices much more expensive than their counterparts, so are not popular among a large number of consumers.
Thus, it is not necessary to install aluminum radiators in rooms with central heating, and for uniform heating of premises, heated by an autonomous system, it is advisable to install a circulating pump.
With its ideal combination of steel and metal, bimetal radiators turn disadvantages used in the production of metals in the benefits of the finished structure, consisting of steel pipes for the movement of the coolant, which externally encased in aluminum.Along with aluminum devices, Bimetallic batteries are manufactured by molding and extrusion.
Pros:
Cons:
So, choose bimetallic radiators and other costs, taking into account the conditions of their future operation.For central heating systems is preferable to stop the choice on the cast-iron radiators and bimetal monolithic structure, while the batteries are suitable for stand-alone system, of any type of metal.We should not forget about the appropriate size of the radiator and liked the space reserved for the installation.
For correct calculation sections radiators need to know the thermal conductivity of a single section, which depends not only on the material, but also on the size of the finished product.This radiator dimensions are selected based on the following factors:
Given the size of the product at the stage of the calculation of the required number of sections, the buyer in advance insures itself against the inaccuracies in determining the amount of heat required for a particular room.
optimal radiator power is determined for each room separately, since the volume of heated air in various premises is unlikely to be the same.Depending on the desired degree of accuracy of the final result, selects one of the calculation methods.
Square According to SNIP, for heating 1 m need 100 watts of heat energy, so:
Number of sections = room area * 100 W / heat output of the selected radiator section (taken from the documentation included with the radiator).
example, for heating the room 3 m wide and 5 m long bimetallic radiator, the average power which section is 200 watts required: Number of sections = 15 * 100/200 = 7.5.Since the result is a fractional number, it shall be rounded to the nearest whole towards increase, ieheating room 15m² need 8 sections, which are divided into 2 radiator.
radiator Calculate the square belongs to a less laborious way, which leads to a rather approximate result.
Guided SNIP, warm-1 m³ per panel, brick houses without additional insulation measures require 41 watts, and in insulated buildings equipped with modern double-glazed windows, enough to 34 watts.The calculation is as follows:
Number of sections = room volume (area * height) * 41 W (or 34 W) / power radiator section.
For example, the amount of room, located in the old Khrushchev, is 37.5 m³ (3 * 5 * 2.5).The acquisition is considered as a cast-iron battery with a heat transfer section 100 watts.Based on their data, the number of sections = 37.5 * 41/100 = 15,375.Round the result, we obtain the desired value of 16 sections.
In contrast to the previous method of calculation, the determination of the number of sections in terms of giving a more accurate result, but not the most reliable.
method special is that when calculating the number of radiators are taken into account various factors that in one way or another affect the conservation of heat in the room.The calculation formula is as follows:
Required power radiator = Area * 100W (heat rate for 1 m²) * Ko * Ktep * CPL * Ktem * Ksten * Ktip * Kvys / power radiator section where:
example, floor space, located on the 3rd floor of a 5-storey house is 15 sqm with room height of 2.5 m. The outer insulation is made using cheap thermal insulation materials.The room has one window with triple glazing and, accordingly, one outer wall.sex ratio with the window opening - about 10%.In winter the temperature drops to -35 ° C.Radiator Power - 200 Watts.
required battery capacity = 15 * 100 * 0.85 * 1.0 * 0.8 * 1.5 * 0.8 * 1.0 / 200 = 6.12.
need for space heating radiator sections 7 200 watts.
Thus, the calculation of radiators with correction factors provides a more accurate result, which may well be less than the determination of the number of sections using approximate calculations.