The heat radiators can be classified by material as:
1. Cast iron radiator (cast iron);
2. Steel radiator (steel tube)
3. Copper-aluminum radiator (copper for water way, external packed with aluminum profile) ;
4. Aluminum radiator (casting aluminum, including aluminum profile);
5. Plastic radiator (plastic) with lower heating radiation ability by 20%, and pressure 0.2MPa;
6. Electric radiator (transfer oil and stainless steel heat pipe) with low heat radiation;
Radiators can also be classified by shape as:
Pole model, steel tube radiator;
Wing model, aluminum and copper-aluminum radiator;
Radiation model, steel radiator, most are in
Convection model, most are complex radiator.
Radiation principle, in physical aspect, matter is composed of molecule and molecule is composed of atom and electron; when the electron in atom vibrates by stimulation, it will produce alternately variable electric field and magnetic field and generate electromagnetic wave spreading to space, which is called radiation. Different stimulation methods will produce electromagnetic waves with different lengths, which will have different effects on matters. Electromagnetic wave that caused by self temperature or heat movement will be called as heat radiation. The heat radiation and heat has different methods in conduction and convection, both of which require direct contact with cold and hot matter or through inter-medium, while radiation does not require contact with matter for heat transfer, which just like that sun can radiate to ground passing through wide space. However, the process of heat exchange of radiation also has two transfers of energy formats, i.e., part of the internal energy of matter (such as power energy) will transfer into electromagnetic wave, and when the electromagnetic wave reaches to the surface of another matter and is absorbed, the electromagnetic wave energy will transfer into internal energy (such as heat energy).
Component and Heat Dissipation Flux of Radiator
·Cast aluminum radiator is applicable to double-pipe heating system and single-pipe heating system for central heating, and also to small boiler heat system.
·The recycling water and supplement water in system shall have proper treatment, and shall not be directly connected with big boiler; big boiler central heat and city planning heat shall be connected through heat exchanger.
Heat Dissipation Flux of Radiator
National Standard GB/T13754—1992
·It regularizes hot water as heat medium, inlet water at 95℃, outlet water at 70℃, average temperature at (95 ℃ +70 ℃ ) /2=82.5 ℃, room temperature at 18 ℃, and temperature difference △T=82.5 ℃ －18 ℃ ＝64.5 ℃
·Heat dissipation flux is one of the important technical parameters of radiator, and each radiator has standard heat dissipation flux (i.e. the heat dissipation flux when △Ｔ＝64.5 ℃) when leaves factory. But the heat medium provided by project is different, we shall provide the heat medium condition required by the project, such as inlet water temperature, outlet water temperature and room temperature, so as to calculate the temperature difference △Ｔ, and then calculate the heat dissipation flux at different temperature difference. △Ｔ=(inlet water temperature + outlet temperature)/2-room temperature=standard temperature.
European Standard EN442-1：1995
·Inlet water at 80 ℃, outlet water at 65 ℃, room temperature at 20 ℃, and the corresponding temperature difference △Ｔ= 50 ℃ . The heat dissipation flux of European standard is that under temperature difference △Ｔ= 50 ℃.
·(1) calculate according to the formula of radiator and temperature difference in thermal engineering inspection report of radiator. Ｑ＝ｍ×△TN e.g. the thermal engineering calculation formula in 74×60 inspection report (10 poles); Ｑ＝5.8259×△Ｔ１．２８２９
·When inlet water is at 95℃, outlet water is at 70 ℃, and room temperature is 18 ℃; △Ｔ＝（95 ℃ ＋70 ℃ ）／2－18 ℃ ＝64.5 ℃
1. Processing mode: automatic production and introduce the production mode of Japan Toyota.
2. Quality Control: professional quality control and technical department, three times pressure tests, full inspection before ex-factory, passed ISO/TS9001：20028Quality System Certification and gained EU CE authentification.
3. What certificates for molding powder
It must gain such authentification of EU EN71-3, hthalate(99/815/ec) and Rohs(2002/95/ec) and ASTM F963-03
4. Our advantages and slogan in the same industry:
Our products have been passed salt spray test and aging test and we consider more about humanization and safety and we believe we will do better in such industry;
Our slogan: no the best, but better!
Salt Spray Tester
Acid Acetic acid Solution 20%
Sulfuric acid Solution 30%
Phosphoric acid Solution 30%
Lactic acid Solution 10%
Alkaline Sodium carbonate Solution 10%
Ammonia Solution 10%
Solution Aromatic Mixture (four months) equal to seven years