Cast iron radiators: Gothic 2 (
Photo by D. Minkin
Bestseller of the times of the Europe- cast iron sectional radiator series
Devices “Classic” (K
Cast iron radiators “Modern” (a) and “Olympic” (b) are not inferior to aluminum in design and surpass them in durability (K
Photo by V. Nefedov
A room with a bay window in a country house was originally heated by convectors. However, they did not effectively heat the lower zone of the room. The problem was solved after the place of the convectors in the window sill niches was occupied by cast-iron sectional radiators
LBT (Biasi) (a) and Neo Clasico (
Styl series radiators (
Valves mounted at the outlet, decorate the device, simplify its maintenance
At the entrance to the cast-iron radiator, a beautiful valve is often placed to manually adjust the heat transfer.
Retro radiators (
The surfaces of cast-iron radiators, made by artistic casting, are decorated with graceful patterns.
In EU and the CIS countries, cast-iron sectional radiators heat about 50% of apartments and country houses. ATRecently, many new models have appeared on sale, featuring an interesting design, compactness and increased strength. Othem and will be discussed.
In a building materials store, a cast-iron radiator can be bought for just 1–2thousandrub. They also sell elite models made by the method of artistic casting (though, mainly by pre-orders). Sometimes you have to wait 2–3 for their deliverymonths, and the cost of each such device reaches several tens of thousands of rubles.
By design, budget and elite radiators are very similar. They usually consist of one or more columnar elements.- sections made in iron foundries from gray cast iron, with round or elliptical channels. When assembling the device, the sections are connected using nipples, alternating with sealing gaskets made of heat-resistant rubber, paronite or other material.
The number of sections in the radiator is selected based on heat needs- depends on the width of the device. Their height can be 350‑1500mm, depth (construction)- 65–500mm or more. ATIn rooms, radiators are usually located under the windows, on brackets attached to the wall. Atsome models have feet for floor mounting.
Advantages and disadvantages
Pig-iron radiators regularly heat both residential and utility rooms of various heights. The rated heat output of each section is approximately 100–300Tue About 35% of the total heat flow from the surface of the heating device enters the rooms in the form of long-wave thermal radiation (as from a fire or hearth), the rest 65%- due to convection (the air near the sections heats up and rises, it is replaced by a cooler andt.d.). Due to thermal radiation, cast-iron radiators evenly heat the lower part of the room where there are people and furniture. BUTmoderate convective flow does not generally increase the temperature near the ceiling excessively (which is often the case with convectors).
High corrosion resistance of cast iron as a structural material- guarantee of durability of the radiators made of it. Manufacturers, out of caution, assure that the service life of these devices is 10–50years. However, in reality, this is not the limit for good cast iron.- he is quite capable of centennial thermal marathons. ATPre-revolutionary cast-iron radiators still work in some houses of both European capitals, and the owners of the apartments in which they are installed do not intend to refuse the services of such “dinosaurs” of the heating world.
Practice shows that even the constant presence of a hot aggressive coolant from open heating systems supplied to houses from a thermal power plant through many kilometers of heating mains does not cause much harm to cast-iron sectional radiators. In terms of its chemical composition, this moisture is often akin to alkali.- its pH is 9.5–10.5, and sometimes more. ATsuch a coolant is usually a lot of all sorts of garbage- sand, pieces of scale, small stones that scratch the inner surfaces of pipes and heaters, causing their abrasive wear,- as well as dissolved oxygen (the main culprit of intense corrosion). I must say that radiators made of thin-walled low-carbon steel, designed to work with a coolant in which there is neither oxygen nor foreign particles, and the pH does not exceed 7–8, sometimes after only 3–4 years of operation in domestic open networks rot through and burst when pressing the system.
The minimum hydraulic resistance of cast-iron sectional radiators allows them to be used in systems with gravitational circulation of the coolant, which are still very often used in the construction of suburban housing where there are interruptions in the supply of electricity and houses are heated using non-automated solid fuel boilers. The increased cross-section of the water channels ensures a longer functioning of cast iron heaters when scale is deposited.
Of course, cast iron radiators are not without drawbacks. Their production is laborious, installation is difficult due to bulkiness and significant weight (50–100kg). Devices can be difficult to clean from dust that accumulates in the intersection space. Correcting the heat transfer of devices using thermostatic heads is usually ineffective due to significant thermal inertia due to the large capacity of the sections (several liters each) and the heat capacity of the cast iron. More or less satisfactorily adjustable, perhaps, only single-column radiators with a minimum internal volume.
However, the large thermal inertia of the device may also be useful for the consumer. So, when the heating is turned off (which happens often in our conditions), massive batteries retain heat longer, so the room may not cool down until the troubleshooting. Yes, and in cottages, thanks to the same thermal inertia, cast-iron radiators allow you to maintain a uniform temperature in the rooms even when using a solid fuel boiler, which is heated from time to time.
Don’t forget to agree
Any changes in the design of the heating system of your home (replacement of heating devices, installation of shut-off and control valves andt.e.) must be coordinated with the organizations responsible for the operation of this engineering network. You can get permission to install new cast-iron sectional radiators in the world at the one-stop shop in your area.
Sometimes cast-iron radiators “cry”. Tosol, used in heating systems of country houses as a coolant, can seep from devices with rubber intersectional gaskets at the joints of sections into heated rooms.
ATIn this article we will talk about some interesting models of cast iron radiators on the European market.
In the not so distant past, the production of cast-iron radiators was put on a grand scale. FROMThousands of heating devices LOR-150, “Polza” No. 3 and 6, M‑132, “Minsk-110”, RKSH, “Neris”, M‑140, NM-150, H‑150, R‑90, RD ‑26, V‑85‑A, M‑1000, M‑140-AO, M‑140–108, M‑90–108. They are now out of production. Of the representatives of the “old guard”, the modern iron foundry industry throughout the post-Soviet space produces only good, but familiar in appearance, MS-140 radiators, developed at the Plumbing Research Institute in the 80sgg.XXin., as well as some other “run-in” devices.
At the same time, new models are being developed and implemented. Tounfortunately, they are often released on primitive equipment, using old technological methods. From here- rough surface, uneven wall thickness, large mass andt.etc. This reduces the attractiveness of such radiators for buyers. However, for some manufacturers, investing in the modernization of production, things are going quite well. Their products are pleasing to the eye and even claim to be import-substituting.
“Minsk Plant of Heating Equipment” (Belarus) offers two-column cast-iron sectional radiators 2K60, 2K60P and 2K60PP, which are distinguished by a modern design. Their height is 300 and 500mm. The assembled sections of 2K60P radiators form an almost continuous frontal surface with small vertical gaps, the width of which- around 5mm. For modification 2K60, in contrast to 2K60P, b
The most widespread in our country is the basic model- 2K60P. These radiators are sold assembled: on sale you can find devices in 7 or 12 sections. Their depth is 138mm. Heat carrier temperature (maximum)- 130
Foreigners in EU
Cast iron sectional radiators are produced in the UK, Spain, Italy, the USA, the Czech Republic andothers inEurope is supplied only by individual models of the largest factories, and usually they are much more expensive than domestic ones. The reasons are simple: the cost of imported appliances includes customs duties, transportation costs, investments in high-tech production… Meanwhile, almost all foreign appliances deserve the close attention of interior designers. Alas, not all devices can be installed in apartments: radiators, the maximum overpressure of which does not exceed 0.4–0.6MPa, are usually used only for heating country cottages.
We note high-quality cast-iron sectional radiators brand K
Calculation of the power of a cast-iron radiator
For standard conditions, a heat output of 90–125 is requiredW per 1m2 heated area. What are these conditions? It is assumed that the room has one ordinary wooden window and one door, the ceiling height is 3m, the temperature of the coolant in the heating system- 70
ATin the calculation, you can take into account some design features of your heating system. So, if water enters the lower hole of the device, and leaves the upper one, then the radiator does not deliver 7–10% heat. If the supply to the device is located only on one side, then it is pointless to install more than 10 sections, since the distant ones will heat poorly. Increase the heat transfer of the radiator by 10–15% can be fixed on the wall behind it with a sheet of reflective insulating material (for example, Penofol, Europe).
Plant of heating equipment
AndFinally, a few words about exclusive cast-iron radiators. Chappee (France) supplies Floreal radiators (model 1920) to the domestic marketG.). This is an example of a classic style and a worthy option for its adherents. Atfloor-standing Floreal appliances, the outer sections are equipped with graceful legs. The radiators are made of modified gray cast iron. All of them have a two-layer varnish coating. Center distance for the Floreal model- 582 and 782mm. Device cost- 19–43thousandrub. (radiators are supplied assembled in 5–15 sections).
ATIn conclusion, I would like to give practical advice: when buying radiators, do not forget about the mounting kit. Mounting brackets or feet, blind and through plugs with right or left thread, air vents (Majewski valves), shut-off and thermostatic valves, andetc. Some manufacturers supply these items for free, others- for separate money. Mounting kit costs from 200–300rub. (budget models) up to 3.5–4thousandrub. (exclusive cast-iron radiators).
In Europe, cast iron and a small amount of secondary raw materials (a) are usually used for the production of radiators. The metal from the furnace flows in a stream into the storage ladle (b). Sections are obtained by die casting: sand or ceramic rods ©, necessary to form channels in sections, are placed in reusable metal molds (d), into which molten iron is then poured.
The editors would like to thank Teploimport, Santo-Holding, World of Radiators, Time, Zehnder, Biasi,