Aluminum Radiator

Key points in choosing Aluminum Radiator :

Radiators (aluminum, electric, steel, etc.) are one of the primary means of heating in residences, offices, and commercial buildings. The radiator water is heated via the central heating system (at the mechanical room) using boilers and the heated water is pumped to various parts of the building via the pipe system, finding its way into the radiators. After exchanging its heat water flows back to the mechanical room to re-heat. This cycle iterates indefinitely.

Radiators are best to be placed in locations that do not require exact temperature and humidity adjustments, as they can only heat the environment and lack the power to adjust ambient temperature or humidity. Further, they reduce the relative humidity of a room (although, nowadays a thermostatic valve on a radiator makes it possible to adjust ambient temperature).

Note: the accumulation of warm air under the ceiling means using radiators is only suitable if the floor-ceiling height does not exceed 3 meters. For higher ceilings, blowing heating devices (e.g. fan coils, splits, air washers, etc.) are recommended.

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As all products in damatajhiz.com are offered with original guarantee services, purchasing any brand of the aluminum radiators provided by damatajhiz.com means that the dear buyer will benefit from the discounts offered by brands such as Iran Radiator™, Butane™, Garmsaz™, Garm Iran™, and other manufacturers. (Visit www.damatajhiz.com for special sales of various aluminum radiators).

Based on the manufacturing process, Aluminum Radiators come in three categories:

1. Fully die-cast aluminum radiators
2. Extruded aluminum radiators
3. Die-cast extruded aluminum radiators

Advantages of Aluminum Radiator

1. Lighter weight due to the aluminum material
2. Durable and resistant to cracks or deformations
3. Environment-friendly (aluminum is a recyclable metal)
4. Higher thermal exchange efficiency compared to steel radiators
5. Resistant against rust for long durations of time even in humid environments such as bathrooms
6. The option to add or reduce radiator fins and accordingly, increase or reduce the heating capacity of a single radiator block (in fully die-cast or die-cast extruded types)
7. The option to replace damaged fins (if a fin is punctured or damaged, it is possible to replace only that specific part). However, in some cases, the costs of dismantling a radiator block and replacing a fin exceed that of buying a new radiator block.

In general, aluminum radiators are lighter, more stylish, and have a higher heat transfer coefficient compared to steel radiators. However, they are also more expensive.

More about Aluminum Radiators

• In a fully die-cast aluminum radiator, each fin is made of A413 aluminum alloy bars and has a specific heating capacity (based on the temperature difference between the feed hot water and ambient temperature of the radiator location). The desired temperature can be obtained by selecting the appropriate number of fins.
• Aluminum radiators have a larger contact surface with the ambient air compared to steel radiators. Moreover, they offer a better thermal conductivity due to their higher coefficient of thermal conductivity. A set of connected radiator fins is called a radiator block.
• Under normal conditions and with a temperature difference of 60 ℃ between the ambient air and radiator feed water, each square meter of the surface of an aluminum radiator produces approximately 670 kcal of heat per hour.

To calculate required number of radiator blades for each part of building, please consult with experts in DamaTajhiz Co. experts by declaring area and location of considered space.
For climates such as Tehran provided that cold air doesn’t excessively penetrate indoor and just one wall is subjected to outdoor cold air, following amounts are considered for each square meter of building area: about 85 Kcal for middle floors, about 95 Kcal for the first floor above parking, and about 120 Kcal for floors under roof. (20% is added to the above heating values for each additional wall in contact with outdoor cold air.)
Now required heating for each part of building can be calculated by multiplying its area by its required heating in Kcal.Finally, number of blades is calculated by dividing required heating number of each part to amount of heat generated by one radiator blade.
Fully diecast radiators are produced by the highest grade production method. Each blade is manufactured on diecast mold as an integrated part and after test, finishing and painting, blades are connected to each other and packaged and offered as 5- , 7- , and 10 blades blocks. (To use radiator blocks with different number of blades, additional blades could be added to a block on installment site.)

Except in extruded or profile radiators such as Alfam or Crystal radiators in which the number of their blades are fixed and cannot be reduced or increased, number of blades can be changed in other diecast on installment place. For example to have a 15 bladed radiator block , one 5 bladed radiator and a 10 bladed radiator are connected to each other or to have a 20 bladed radiator two 10 bladed radiators are connected to each other on installment time.

Production method for diecast- extruded radiators is a combination of two mentioned methods. Upper and lower parts of each blade is produced by diecast method and its middle part is produced by extrusion and next The upper, middle and lower parts are connected to each other.

Selecting the installation place for radiators:

• In winter,heat is transferred to indoor space of buildings by radiators but room temperature is usually constant and doesn’t increase because a great amount of generated heat is lost.
• Heat loss occurs by two ways. One of them is heat loss through interfaces such as wall, floor, roof and window and the other one is the penetration of cold air through window seam. In other words this heat loss is inevitable.
  Of course by using double glazing UPVC windows and thermostatic valve on radiator heat loss can be reduced but it cannot be completely eliminated.
• In spaces with high humidity, such as bathroom, usually aluminum radiator is used.
  Different types of aluminum radiators are mounted on wall under window and distance between every radiator block and floor is 10-12 cm.
  
  

Radiator selection and some points related to it:

1. Considering dimensions of installment place and its heat loss, you can select number of required radiator blades based on shape, dimensions, and heat generating capacity of each radiator model.
2. As usual we emphasize on precise calculation of thermal load of building by software and approval of calculation results by a HVAC engineer; in this case your expenses will be reduced.
3. Note: normal distance between forward and backward warm water pipes of aluminum radiators that come out of the wall behind the radiator is 50 cm but before selection of radiator model it is better to recheck this distance.
   Is distance between upper and lower pipes in your considered installment place 35, 50 or 60 cm?
4. It is necessary to install radiators on cold borders of building (under windows and near external walls)
5. Considering high cost of fuel on one hand and global warming on the other hand, applying thermostatic valves instead of conventional valves is a must or a smart and economic choice and reduces gas bill amount considerably and also has appreciable effect on mechanical room and heating package lifetime.
6. Installing an automatic bleeding valve facilitates bleeding and reduces water leakage to furniture and appliances.
7. Regular and on time bleeding is one of the most important principles of maintenance of heating equipment. Please note that bleeding should be done carefully every year at the beginning of cold season while water circulating pump of radiator is turned off.
8. In time of selecting aluminum radiators, please select a model that in addition to having proper sealing and shape, has similar products in market so that if in future you need to buy a number of blades, you can find them easily and with low cost.
9. The more is blade width, the more stylish and beautiful is radiator. Usually bladed aluminum radiator is provided in two widths: 6 and 8 cm. so it is better to use blades with 8 cm width.
10. Please note that minimum distance between radiator block and wall (5 cm) and floor (10 cm) be observed because not observing these distances results in significant heating loss.
11. As much as possible there should be nothing around radiators so that air circulates better and efficiency and thermal capacity of radiator is increased. Try to put all kinds of coverings and obstacles (such as curtain, furniture…) far from radiator.
12. Providing towel warmer radiators in spaces such as bathroom and toilet in addition to reducing humidity and increasing health factors in them, is good for drying damp towels and clothes. Additionally, by decorative designs available in market you can create a beautiful display in such places.

Some advantages of bleeding of heating circuit include:

• bleeding reduces risk of water leakage from system (radiators)
• bleeding results in longer lifetime of all equipment including boiler, pump, radiator, package….
• Bleeding increases heating efficiency of system and especially that of radiator blocks significantly and finally reduces gas expense.

Placing an Order and Warranties for Aluminum Radiator

• Offering best price guarantee for all products, the prices for Aluminum Radiator presented by DamaTajhiz are up-to-date and discount-included (see Best Price Guarantee at DamaTajhiz.com).
• At DamaTajhiz.com, we provide all the information you need, as well as guaranteed unbeatable prices, for several models of Aluminum Radiators from reliable manufacturers, with original warranties, to bring you the thrill of an ideal, intelligent purchase.

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4BTU = 1K cal