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The Science of Infrared Heat

Introduction to Infrared Heat

Infrared heat, first discovered by Sir William Herschel during the Industrial Revolution, is a form of electromagnetic radiation. Unlike conventional heaters, it transfers warmth directly to objects and materials without heating the surrounding air. This unique method of transferring energy has led to various applications in modern-day heating systems.

How Infrared Heaters Work

Infrared heaters emit electromagnetic waves which are then absorbed directly by objects and people. These waves then create molecular vibrations, generating thermal energy that we feel as heat. Similar to how sunlight warms our skin, infrared heaters provide direct warmth without emitting harmful UV rays.

Understanding Wavelengths and the Light Spectrum

Infrared radiation lies between visible light and microwaves on the electromagnetic spectrum, with wavelengths ranging from 700 nanometres (nm) to 1 millimetre (mm). It is categorised into three subtypes:

  • Near-infrared (700 nm – 1400 nm): Near-infrared radiation is closest to visible light in the spectrum. It is often used in industrial processes, such as drying and curing, due to its ability to penetrate materials deeply and provide intense, localised heat.

  • Mid-infrared (1400 nm – 3000 nm): Mid-infrared radiation is typically used in applications requiring moderate heat levels, such as in some heating appliances and medical therapies. Its balance between penetration and heat intensity makes it versatile for various uses.

  • Far-infrared (3000 nm – 1 mm): Far-infrared radiation, with the longest wavelengths, is known for its gentle and even heat distribution. This subtype is widely used in residential and commercial infrared heaters, as well as in therapeutic devices like infrared saunas, where it provides a soothing, deep warmth that can help relieve muscle tension and promote relaxation.

By understanding these different wavelengths, we can appreciate how infrared technology can be tailored to meet specific heating needs, whether it's for comfort, industrial processes, or health and wellness applications. The ability to harness infrared radiation in this way underscores its potential as a forward-thinking solution in energy-efficient and environmentally friendly heating.

Learn More: Check out our blog for a detailed explanation of the difference between FAR, MID and NEAR Infrared Heat? Discover the best option for your needs today!

    Now that we know about the different types of Infrared - see how our FAR infrared heating solutions work and how they can help you in your home or commercial space

    Contact

    If you require any further information or have any questions, then please contact us and speak to one of our specialist technical team who will be happy to help. Call us on 01204 520544 or email us at info@infraredheatingsupplies.com.