Understanding the physics of far-infrared heating
Far-infrared heating, based on radiant heat transfer, warms objects, surfaces, and people directly instead of heating the air, making it more energy-efficient and comfortable. High-emissivity materials and thermal re-radiation contribute to the effectiveness and even distribution of far-infrared heating systems. 4/101
In our last article, “Far-infrared heating in ancient cultures: mythology and folklore,” we explored the intuitive understanding of far-infrared heating and its benefits in ancient cultures. Now, let’s dive deeper into the science behind this innovative technology and uncover the physics of far-infrared heating.
Far-infrared heating is based on the principle of radiant heat transfer. Infrared radiation, which lies in the range of 3 to 100 micrometres on the electromagnetic spectrum, is emitted by a heat source, such as a far-infrared heating panel. This radiation travels through the air without directly heating it and is absorbed by objects, surfaces, and people in its path, causing them to warm up.
This method of heat transfer differs from conventional convection heating systems, which rely on heating the air in a room. The main advantage of radiant heating is that it is more energy-efficient and provides a more comfortable, even temperature throughout the space.
The key to understanding the physics of far-infrared heating is the concept of emissivity, which refers to a material’s ability to emit radiation. Infrared heaters use materials with high emissivity, such as carbon or ceramic elements, to maximize the amount of far-infrared radiation emitted. These materials are then enclosed in a heat panel, which is designed to optimize heat distribution and minimize heat loss.
As the far-infrared radiation is absorbed by objects in the room, they become secondary heat sources, radiating warmth back into the space. This process, known as thermal re-radiation, contributes to the efficient, even heating provided by far-infrared systems.
Now that we’ve explored the underlying physics of far-infrared heating, our next article in the “Far-Infrared 101: A Comprehensive Journey” series will focus on the technological advancements in far-infrared heating systems. In “Technological Advancements in Far-Infrared Heating Systems,” we will discuss the innovations that have led to the development of modern, energy-efficient, and user-friendly far-infrared heaters, such as those offered by Infracomfort. Stay tuned as we continue to delve into the fascinating world of far-infrared heating.