China radiator

April 11, 2009

Aluminium radiators

Filed under: Aluminum Radiator, Radiator — admin @ 2:59 am

Aluminium radiators are quickly becoming the choice of architects, designers and homeowners alike, but what makes this abundant metal so appealing? Sara Hale of Walney radiators explains all

Today’s average family home is quite different from that of twenty or thirty years ago. Nowadays many houses are left empty as both parents work, children are at school and weekends are spent out and about. Furthermore, the current climate change means that winters aren’t as cold as they once were. These issues make a remarkable impact on our heating requirements.

Conventional central heating systems with stainless steel radiators are all well and good when people are at home more often than not and need a radiator that will retain heat for as long as possible. But these heating systems take time to get the house warm because of the amount of water that has to circulate in the system. The differences in the way people in today’s society live their lives have had an influence on what people want from their heating system. For this reason, there has been a significant increase in the amount of people choosing aluminium.

Aluminium possesses many properties that make it the perfect material for radiators. It is the most abundant metal in the earth’s crust, and the third most abundant element overall. It makes up about eight per cent of the earth’s solid surface and is therefore one of the few metals in which the availability of raw materials is literally unlimited.

One of the biggest advantages of aluminum radiators is their low water content. In fact, aluminum radiators hold eighty per cent less water than their conventional counterparts. This means that the water quickly heats up and circulates, so you can turn on your central heating when you get home and your house or apartment warms up immediately, being extremely responsive to thermostat changes. Vice versa, aluminium radiators cool down very quickly when you turn them off. In this way, the boiler needs to be turned on for a very short period of time only, converting to significant energy savings, excellent cost efficiency and lower bills for the homeowner.

Aluminium is also non-corrosive. This is due to the fact that once exposed to air, the surface of aluminum will quickly develop a thin, microscopic layer of oxide over its top, which will stop the metal from rusting. Aluminium radiators also undergo specific multi-phase treatments before the final coating, making the external and internal surfaces highly resistant to the corrosive action of the water in the system and the surrounding environment.

Aluminium weighs less than any other radiator material, making it easier to handle, transport and install; in fact they can be mounted on almost any wall. The higher output of this type of radiator, compared to cast iron and steel, means they can be slightly smaller, saving on running costs and space.

Choosing an aluminium radiator is also better for the environment. As well as wasting less energy when in use, aluminium collected for recycling can circulate in an almost endless cycle. The loss of metal from oxidation during smelting is negligible, averaging only a few percent of the total mass. The quality of the re-melted metal is so high that it can be used for the same product time and again. Aluminium radiators are also more eco-friendly to manufacture. This is due to the fact that aluminium designs are lead-free, compared to the copper brass designs historically used by the industry.

Aluminium radiators also look good too. The great thing about aluminium radiators is the infinite range of designs, finishes and colours available.

K8 is a range of aluminium products are constructed in extruded aluminium alloy, with a high thermal conductivity, superior to that of other metal or alloys normally used. The extruded alloy allows fast heating at a lower temperature of the heating system, at the same thermal output. Their features are unique in Italy, both from a technical and from an aesthetic view point. With 90 per cent less water content than traditional radiators, these products offer unrivalled water content.

The K8 range is unique because it is available in any RAL colour. They also are available in any size and therefore can easily replace the existing radiators without breaking any wall to reposition water piping, a consistent saving for whoever is installing them. 

Italian company, ProjectClima, is a relatively young company, creating the Adacto radiator which is a new way of approaching heating and not just in the home. The radiator is covered in aluminium tiles, offering the customer limitless design and colour choices. You change the colours yourself simply with the help of a screwdriver. The front covers can be drilled to offer the possibility of fixing accessories such as hangers, towel rails, etc.

The radiator is also unique in its connection system. ProjectClima has devised a new flexible hose that enables the radiators to be connected to the hydraulic system without the necessity of pipe centres, with an adjustable wall mounting system that lets you move the fixing point from the radiator itself.

October 20, 2008

The definition of the Radiator

Filed under: Radiator — admin @ 11:00 pm
There are four meanings of the Radiator:
1.A heating device consisting of a series of connected pipes, typically inside an upright metal structure, through which steam or hot water is circulated so as to radiate heat into the surrounding space.
2.A cooling device, as in automotive engines, through which water or other fluids circulate as a coolant.
3.Physics. A body that emits radiation.
4.A transmitting antenna.Any of numerous devices, units, or surfaces that emit heat, mainly by radiation, to objects in the space in which they are installed. Because their heating is usually radiant, radiators are of necessity exposed to view. They often also heat by conduction to the adjacent thermally circulated air.Radiators are usually classified as cast-iron (or steel) or nonferrous. They may be directly fired by wood, coal, charcoal, oil, or gas (such as stoves, ranges, and unit space heaters). The heating medium may be steam, derived from a steam boiler, or hot water, derived from a water heater, circulated through the heat-emitting units.Electric heating elements may be substituted for fluid heating elements in all types of radiators, convectors, and unit ventilators. See also Hot-water heating system; Radiant heating; Steam heating., Aluminum radiator .

Architecture: radiator A heating unit usually exposed to view within the room or space to be heated; transfers heat by radiation to objects within visible range, and by conduction to the surrounding air, which in turn is circulated by natural convection; usually fed by steam or hot water.

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May 28, 2008

What is the radiator

Filed under: Radiator — admin @ 11:01 am

Radiators are: industrial cooling radiators, cooling radiators civilian, civilian thermal heating radiator

Industrial cooling radiators: major equipment used in heat, cooling, and other aspects of the environment

Civil radiator: The main application in the heat of civilian equipment. If cpu radiator, and so on

Civil heating radiator is: with winter heating cooling equipment to distinguish between material can be divided into: 1. Cast iron radiator 2. Steel radiator .3 non-ferrous metal radiator 4 composite radiator.

Now China’s main civilian application of heating radiators in the northern Yunnan-Guizhou Plateau and the Northwest Territories. Production base and more focused on: Jizhou city of Hebei Province. Qingxu areas in Shanxi Province.

May 4, 2008

Bleeding aluminum radiator

Filed under: Radiator — admin @ 10:25 pm

All “radiant” (ie. heat radiates from hot water) systems need to be bled, or purged of air, on occasion.

If there is air (or other gases such as Hydrogen) trapped inside the radiator, then the water cannot rise to the top, and only the bottom area gets hot. A bleed screw near the top of the radiator allows the trapped air to be ‘bled’ from the system, and thus restore correct operation. Often radiators located on upper floors will accumulate more air than ones on lower floors as the air will tend to rise to the topmost point in the system. These may have to be bled more often. Usually radiators are bled once or twice per season, or as needed. Another reason to exclude air is to minimise corrosion of the steel pressed radiators. Note that most central heating systems need a corrosion inhibitor added into the circulating hot water, so that the production of Hydrogen is minimised. This is created in untreated systems, by the action of the hot water on the iron in the absence of air (stripping off the oxygen atom to leave hydrogen as H2 when iron oxide is created). Note that if air is getting into the radiators frequently, this may be the sign of a leak somewhere, such as a dripping valve, or loose joint.

April 28, 2008

Radiator For Underfloor heating

Filed under: Radiator — admin @ 9:37 am

The current trend in radiant heating is towards underfloor heating, where radiator warm water is circulated under the entire floor of each room in a building. A network of pipes, tubing or heating cables is buried in the floor, and a gentle heat rises into the room. Because of the large area of this type of radiator, the floor only needs to be heated a few degrees above the desired room temperature, and as a result, convection is almost non-existent. These systems are reputed to have a high level of comfort, but are generally difficult to install into existing buildings. For best results, a floor covering that conducts heat well (such as tiles) should be used.

The hypocaust was a Roman heating system using a similar principle of operation.

April 13, 2008

Conventional radiator

Filed under: Radiator — admin @ 10:16 pm

A conventional hot-water radiator consists of a sealed hollow metal container, usually flat in shape. Hot water enters at the top of the radiator by way of pressure, from a pump elsewhere in the building, or by 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. The pipe either has a large surface area or attached fins to increase its surface area and therefore contact with surrounding air. The air near a radiator is then heated and produces a convection current in the room drawing in cold air to heat.

If set up improperly, radiators, and their supply and return pipes, can make loud banging noises like someone hammering on the pipes. This is due to either the pipes rubbing on surrounding surfaces while expanding and contracting due to heat changes or to sudden fluctuations of the supplied water pressure. Proper mounting of the radiators and supply pipes will reduce expansion noises, while upward-mounted stub ends with a trapped bubble of air (not interfering with flow, as would an un-bled radiator) will provide a cushion against pressure fluctuations, an anti-hammer device.

Stereotypical cast iron radiators (as pictured) are no longer common in new construction, replaced mostly with copper pipes which have aluminum fins to increase their surface area. In the U.K., modern domestic radiators tend to be of sheet steel construction (often with steel fins), though copper/aluminium is often found in industrial Air Handling System heat exchangers.

The radiator was invented in 1855 by Franz SanGalli. He was the first to produce a system of central heating and patented his invention in Germany and the US.

There are many designs and varieties of radiators, from conventional to modern style. Radiators are sometimes seen as an art form, much like sculpture.

All “radiant” (ie. heat radiates from hot water) systems need to be bled, or purged of air, on occasion.

If there is air (or other gases such as Hydrogen) trapped inside the radiator, then the water cannot rise to the top, and only the bottom area gets hot. A bleed screw near the top of the radiator allows the trapped air to be ‘bled’ from the system, and thus restore correct operation. Often radiators located on upper floors will accumulate more air than ones on lower floors as the air will tend to rise to the topmost point in the system. These may have to be bled more often. Usually radiators are bled once or twice per season, or as needed. Another reason to exclude air is to minimise corrosion of the steel pressed radiators. Note that most central heating systems need a corrosion inhibitor added into the circulating hot water, so that the production of Hydrogen is minimised. This is created in untreated systems, by the action of the hot water on the iron in the absence of air (stripping off the oxygen atom to leave hydrogen as H2 when iron oxide is created). Note that if air is getting into the radiators frequently, this may be the sign of a leak somewhere, such as a dripping valve, or loose joint.

April 6, 2008

Conventional radiators

Filed under: Radiator — admin @ 8:41 pm

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. The pipe either has a large surface area or attached fins to increase its surface area and therefore contact with surrounding air. The air near a radiator is then heated and produces a convection current in the room drawing in cold air to heat.

If set up improperly, radiators, and their supply and return pipes, can make loud banging noises like someone hammering on the pipes. This is due to either the pipes rubbing on surrounding surfaces while expanding and contracting due to heat changes or to sudden fluctuations of the supplied water pressure. Proper mounting of the radiators and supply pipes will reduce expansion noises, while upward-mounted stub ends with a trapped bubble of air (not interfering with flow, as would an un-bled radiator) will provide a cushion against pressure fluctuations, an anti-hammer device.

Stereotypical cast iron radiators (as pictured) are no longer common in new construction, replaced mostly with copper pipes which have aluminum fins to increase their surface area. In the U.K., modern domestic radiators tend to be of sheet steel construction (often with steel fins), though copper/aluminium is often found in industrial Air Handling System heat exchangers.

The radiator was invented in 1855 by Franz SanGalli. He was the first to produce a system of central heating and patented his invention in Germany and the US.

There are many designs and varieties of aluminum radiators, from conventional to modern style. Radiators are sometimes seen as an art form, much like sculpture. pneumatic cylinder

March 21, 2008

Radiator

Filed under: Aluminum Radiator, Radiator — admin @ 5:25 am

Radiators and convectors are types of heat exchangers designed to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and electronics.

One might expect the term aluminum die casting to apply to devices which transfer heat primarily by thermal radiation (see: infrared heating), while a device which relied primarily on natural or forced convection would be called a “convector”. In practice, the term “radiator” refers to any of a number of devices in which a liquid 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 term “convector” refers to a class of devices in which the source of heat is not directly exposed.plastic granulator

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