Infrared light consists of electromagnetic rays just outside the visible spectrum of colors, near microwave energy. Infrared is a key feature in devices such television remotes, but among its uses, infrared can also be an effective heating agent.
Household Heat
Heating a house during the cold months can be expensive. Many stores sell infrared heating units that run off an ordinary electrical circuit. Instead of heating electrical coils, water, oil or other substances to radiate heat through the room, they emit infrared heat. Manufacturers of these devices claim that infrared heat is more economical and will significantly lower household heating costs. However, according to the University of Missouri, they are no more efficient than using small space heaters that usually cost 1/10 the price. Both infrared heaters and space heaters may reduce costs, however, since they typically heat only one area of the house at a time. Some heaters may require their own electrical circuit that is not shared with other devices so as to not blow a fuse.
Grilling
According to a May 2005 article in "MoneySense" magazine, infrared grills are growing in popularity. At least 1/3 of commercial grilling products use infrared heat as part of the cooking heat source. Infrared grills can heat up more quickly than conventional grilling technology. You can cook a steak in just minutes on an infrared grill as they can heat up to 1600 degrees Fahrenheit in only 3 minutes. Another advantage is that the grills operate better in colder months than propane-based grills that often suffer from poor gas circulation. Additionally, the quick and high heat makes it easier to sear food, opening doors for new recipes and more contrasting flavors.
Far Infrared Therapy
Far Infrared therapy (FIR) is a method for treating health conditions through infrared heat. By heating up parts of the body through infrared radiation, FIR engages blood vessels, enzyme activity and body tissue. Among the procedure's many benefits is that the physical experience itself usually relaxes the patient. The heating can expand blood capillaries, which improves circulation. The body burns calories more quickly when exposed to heat, which may help loosen fats and cellulite. According to the U.S. National Institutes of Health, FIR is successful in regulating the nervous system and improving the body's overall immune system and blood circulation. In clinical trials, infrared heat therapy also shows promising treatment options for patients with Lou Gehrig's Disease.
References
- NASA: Infrared Light
- University of Missouri: Check out manufacturers' claims when buying an infrared space heater
- Canadian Business Online: Blazing fast: infrared barbecues are red hot
- Chi Machine International: Far Infrared
- Clinical Trials.gov: Far Infrared Irradiation for Control, Management and Treatment of Amyotrophic Lateral Sclerosis (ALS)
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