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21-731: Stelrad is a British-based manufacturer of central heating radiators . Its Elite radiator is the most popular radiator in the United Kingdom. Founded in 1936 as the Steel Radiators company in Southall , London . It now makes products for central heating systems. It opened a factory in Dalbeattie , Dumfries and Galloway , in 1961, which closed in 1998. It is situated off the A6022 in Swinton, between

42-472: A boiler, electric radiators produce heat from electricity at the location of the radiator. This heat may be transferred to a fluid (such as oil) inside the radiator. The oil circulates inside the radiator by convection, which distributes the heat from the heating element to the surface of the radiator. Smaller electric radiators have the advantage of being portable, as they do not need to be connected to pipework. Some electric radiators can also use hot water; this

63-416: A class of devices in which the source of heat is not directly exposed. As domestic safety and the supply from water heaters keep temperatures relatively low, radiation is inefficient in comparison to convection. Steam has the advantage of flowing through pipes under its own pressure without the need for pumping. For this reason, it was adopted earlier, before electric motors and pumps became available. Steam

84-437: A feature designed to heat towels before using them. For many years, European hotels have used them as combined towel- dryers/racks. The towel warmer is a bathroom heater suitable for both drying and heating towels and the environment. There are two versions: traditional ones that are plumbed like a radiator with water heated from a central boiler, and electric ones where an electrical resistance heats water or oil contained in

105-407: A few degrees above desired room temperature, minimizing convection . Underfloor heating is more expensive in new construction than less efficient systems. It also is generally difficult to retrofit into existing buildings. The Roman hypocaust employed a similar principle of operation. Skirting-board radiators are a form of heater which involves placing radiators inside a skirting board. Hot water

126-430: A horizontal section of the steam piping. Subsequently, steam picks up the water, forms a "slug" and hurls it at high velocity into a pipe fitting, creating a loud hammering noise and greatly stressing the pipe. This condition is usually caused by a poor condensate drainage strategy and is often caused by buildings settling and the resultant pooling of condensate in pipes and radiators that no longer tilt slightly back towards

147-504: A low water content so this combined with the excellent thermal conductivity qualities of the metal itself make aluminium radiators very responsive to changes in the temperature demand. A fan-assisted convector contains a heat exchanger fed by hot water from the heating system. A thermostatic switch energises an electric fan which blows air over the heat exchanger to circulate it in a room. Its advantages are small relative size and even distribution of heat. Disadvantages are fan noise and

168-539: A room. If the radiator is blocked either from above or below, this air movement is prevented, and the heater will not work. Baseboard heating systems are sometimes fitted with moveable covers to allow the resident to fine-tune heating by room, much like air registers in a central air system. Panel radiators are welded from flat or corrugated steel panels, and are usually hung from the wall. They are usually used with hot water systems, but electric versions are also available. The panels often have fins attached, which increases

189-452: Is a device that transfers heat to a medium primarily through thermal radiation . In practice, the term radiator is often applied to any number of devices in which a fluid circulates through exposed pipes (often with fins or other means of increasing surface area), notwithstanding that such devices tend to transfer heat mainly by convection and might logically be called convectors . The terms convection heater and convector refer to

210-404: Is also far easier to distribute than hot water throughout large, tall buildings like skyscrapers . However, the higher temperatures at which steam systems operate make them inherently less efficient, as unwanted heat loss is inevitably greater. Steam pipes and radiators are prone to producing banging sounds called steam hammer . The bang is created when some of the steam condenses into water in

231-620: Is particularity common for heated towel rails , where the radiator uses hot water when the central heating system is running but switches to electricity when heating the whole building is not required. Cast iron radiators may be used with hot water or steam systems. Traditional cast iron radiators are no longer common in new construction, replaced mostly with forced hot water baseboard or panel radiators, but they remain available. Hot-water baseboard convectors (often referred to as "fin-tube radiators") consist of copper pipes which have aluminum fins attached to increase their surface area. Conduction

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252-400: Is piped though the system, usually taken directly from the central heating system. Radiators can lower indoor humidity , which may contribute to dry skin, lower physical comfort, and shrinkage of wood flooring (for example) as a result of warming the air. However, a humidifier can be used to increase the humidity. Towel warmer A towel rails radiator or a heated towel rail is

273-445: Is used to transfer heat from the water circulated in the pipes into the metal radiators or convectors. Baseboard convectors are designed to heat the air in the room using convection to transfer heat from the radiators to the surrounding air. They do this by drawing cool air in at the bottom, warming the air as it passes over the radiator fins, and discharging the heated air at the top. This sets up convective loops of air movement within

294-545: Is used. In these cases, the dryer is heated by hot water in wintertime, and by electricity in the summer. A towel dryer, with high output, can also serve as a radiator in a small bathroom . Dryers come in a variety of appearances, including ladder types, turnable types, and others. Towel warmers dry towels more quickly. Towel warmers come in varied shapes. There are towel warmers of different sizes, from (50 by 70 centimetres (20 in × 28 in)) to those two metres (6 ft 7 in) in height. Insulating

315-488: The boiler . A hot-water radiator consists of a sealed hollow metal container filled with hot water from a boiler or other heating device by gravity feed, a pump, or natural convection . As it gives out heat, the hot water cools and sinks to the bottom of the radiator and is forced out of a pipe at the other end. Anti-hammer devices are often installed to prevent or minimize knocking in hot water radiator pipes. Unlike steam or hot water systems which receive heat from

336-400: The need for both a source of heat and a separate electrical supply. Also known as "radiant heat", underfloor heating uses a network of pipes, tubing or heating cables, buried in or attached beneath a floor to allow heat to rise into the room. Best results are achieved with conductive flooring materials such as tile. The large surface area of such room-sized radiators allows them to be kept just

357-448: The radiator and between the panels is by convection only, and must be unrestricted if the radiator is to reach its design performance. The heat output of panel radiators is regulated by controlling the flow of hot water, with either a manual or a thermostatic valve. Radiators can also be made from aluminium which is a very good conductor of heat and has better thermal conductivity compared to that of steel. Aluminium radiators tend to have

378-457: The railway stations of Swinton and Mexborough . It has a seventeen-acre site. The R&D site is in Belgium. Radiator (heating) Denison Olmsted of New Haven, Connecticut, appears to have been the earliest person to use the term 'radiator' to mean a heating appliance in an 1834 patent for a stove with a heat exchanger which then radiated heat. In the patent he wrote that his invention

399-402: The surface area and therefore the amount of heat that can be transferred into the air. Several panels may be stacked together to make one radiator, and the resulting radiator is referred to with a two-digit type number. The first digit is the number of panels, and the second is the number of sets of fins, for example a type 21 radiator has two panels with one set of fins in between. Air flow around

420-404: The unit. Towel dryers can be made from different metals such as, steel , stainless steel , or aluminum . In some types, brass or copper is used. The finish can be in chrome plating , polished steel, or lacquer . Dryers can be heated electrically (heating cartridge or heating cable ), or by circulating hot water (connected to the central heating ). Often, a combination of the methods

441-518: Was "a peculiar kind of apparatus, which I call a radiator". The heating radiator was invented by Franz San Galli in 1855, a Kingdom of Prussia -born Russian businessman living in St. Petersburg . In the late 1800s, companies, such as the American Radiator Company , promoted cast iron radiators over previous fabricated steel designs in order to lower costs and expand the market. A radiator

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