Air radiators use high-efficiency finned tubes as heat transfer elements, with steam and other fluids (heat transfer oil, water, etc.) as one working medium and air as the other. Through enhanced heat transfer of finned tubes, they achieve heating or cooling of the medium inside the tubes, or use the medium inside the tubes to heat or cool the air.
Since air radiators are the most suitable equipment for steam-gas and liquid-gas heat exchange, they have been widely used in various industrial and civil fields such as warm air heating, air conditioning, cooling, dehumidification, and drying. Main materials of finned tubes: copper series (copper tube copper fin), steel series (steel tube steel fin), steel-aluminum composite series (steel tube aluminum fin), stainless steel series, copper-aluminum laminated series. Main processing methods of finned tubes: mechanical winding followed by overall galvanizing (tin plating), bimetallic (steel-aluminum, copper-aluminum composite) sleeve rolling, finned tube galvanizing, and finned tube hydraulic expansion.
1. Can heat air to very high temperatures, up to 850°C, with the shell temperature only around 50°C.
2. High efficiency: can reach above 0.9.
3. Clean air, small volume.
4. Multiple types can be designed according to user needs.
5. Durable and long-lasting, with a service life of several decades when used in accordance with operating procedures.
6. Fast heating and cooling rates, up to 10°C/s, with quick and stable adjustment. There is no leading or lagging phenomenon of the controlled air temperature, which would cause temperature control drift, making it very suitable for automatic control.
7. Good mechanical performance: because the heating element is made of special alloy material, it has better mechanical performance and strength than any other heating element under the impact of high-pressure air flow. This is particularly advantageous for systems and accessory tests that require continuous long-term air heating.
