Direct heating and indirect heating are the same in their state, but far-infrared heating is fundamentally different.
There are three forms of heating to provide heat to the heated object: direct (contact) heating represented by hot plates, indirect heating represented by hot air heating, and radiant heating represented by far infrared heaters. All can be considered surface heating. Heat is absorbed at the surface of the heated object and transmitted internally through thermal conduction. However, while direct heating and indirect heating have the same mode, far infrared heating is fundamentally different. 【Features】 [Far Infrared Heater] ○ The surface is made of ceramic materials. ○ When far infrared radiation ceramics are heated, they cause molecular vibrations and crystal lattice vibrations, emitting wavelengths of 3μ or more from the surface. ○ In contrast, the molecular vibrations of the heated object are at 3μ or more, so when it receives energy from the far infrared heater, thermal vibrations are excited. ○ The heating from the far infrared heater is efficiently absorbed and generates heat in organic materials like paints and plastics, as well as in polymers, and it is also very well absorbed by water, making it widely used for drying and curing. ○ The heat source for heating far infrared heaters is typically electric heaters using nichrome wire, but gas, steam, and oil are also used. For more details, please contact us or download the catalog.
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【Features】 [Far Infrared Heater] ○ The heater temperature ranges from 30 to 50°C for vacuum degassing, 100 to 500°C for annealing and moisture drying, 100 to 300°C for film heating, and 200 to 500°C for paint drying, generally used below 600°C. ○ The heater temperature can be freely controlled, allowing for temperature changes in the heating and holding sections, enabling uniform heating by varying the temperature in the width direction. [Near Infrared Heater] ○ The external structure is a quartz tube, which encloses inert gases such as halogen and xenon, with heating elements made of tungsten or carbon installed inside. ○ The filament (heating source) operates at a high temperature of around 1200 to 2000°C, providing strong power. ○ Due to the radiation wavelength being below 3μ, its absorption rate by the heated object is inferior to that of far infrared heaters, making it suitable for large-scale and high-power equipment. ○ It is widely used in countries where land and electricity costs are low. ○ Care must be taken as there are differences in absorption rates based on color. ○ The shape is tubular, and panel types cannot be produced, which may lead to temperature distribution issues during tact operation. ● For more details, please contact us or download the catalog.
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We are a specialized manufacturer of far infrared heaters and heating devices. We offer a wide variety of heaters suitable for industrial heating. For clean heating and tact operation or fixed furnaces, we have panel heaters; for continuous heating via conveyors, we provide straight heaters; for precise temperature control or heating small components, we offer ceramic heaters; and for insulation or low-temperature heating, we have space heaters. Far infrared heaters are useful for heating, curing, and drying.