With the cold, when you are in nature away from home, you can and must fight. Moreover, now there are many modern and technologically advanced portable devices on sale, individual heating pads of various types and types, compact gas heaters and so on, whose work is based on various physicochemical processes.
Individual means of active heating in cold weather, disposable chemical heating pads, reusable salt and catalytic heating pads, device and application in field and field conditions.
According to statistics, from 10 to 15% of people who died in nature became victims of overcooling. Even the warmest clothes, at negative air temperatures, can ensure the maintenance of a positive thermal balance of the human body only for a very limited time. Sooner or later, heat loss will be greater than heat production and cooling of the body will begin. Prolonged exposure to cold is dangerous. It paralyzes the will and dulls the instinct of self-preservation. This can ultimately lead to at least serious health problems, or at the very least to death..
Disposable chemical heating pads and thermal packs for heating in the field.
The cheapest and most affordable means of individual heating are various disposable chemical heating pads (thermal packs) for arms and legs. Heat in such heaters is usually generated as a result of a chemical reaction between the contents of the packet itself and oxygen. Such heating pads are very easy to use, sometimes it will be enough to remove it from the package to start the process of heat generation. Operating temperature, depending on the purpose of the disposable heating pad, is from plus 40 to 60 degrees Celsius. Operating time from 4 hours and more.
The design of some disposable chemical heating pads allows you to temporarily stop the process of heat release from it. For this, it is enough to stop the access of oxygen to its active content and the reaction stops. Disposable chemical heating pads will be convenient autonomous heat sources for fishermen, tourists, hunters and the military. They can be put in shoes, in a glove, in the inside pockets of clothes, heat equipment (photos and video cameras) when working in the cold, etc..
Reusable salt warmers for field heating.
Reusable salt water heaters is a sealed container made of a dense material, which is filled with a saturated saline solution. The principle of operation is based on the effect of heat generation when the phase state of materials changes. The salt water bottle can have almost any shape and size. So, for example, a salt foot warmer can take the form of an insole.
Inside the heating pad is an applicator (stick or circle), with which it starts. The working temperature of salt warmers is from 50 degrees and above. Operating time depends on the size of the heater and the ambient temperature of 2 hours or more. After the end of the work cycle, salt water heaters are brought into working condition by placing them in boiling water for a while, after which it is ready for reuse.
Reusable catalytic heating pads for field heating.
In addition to disposable chemical heating pads, there are reusable pocket catalytic heating pads. The principle of their action is based on the catalytic flameless oxidation of alcohol or gasoline vapors, which is accompanied by the release of heat. The catalyst in such heaters is platinum. A vivid example of the classic pocket catalytic gasoline warmer Zippo Hand Warmer. A more detailed article is written about her in a separate article on our website..
Cold Weather Prevention.
In cold weather, you must try to adhere to the following simple rules.
1. Generate heat.
There are often, but little by little, and high-calorie foods. When food is often taken in small portions, this increases the overall metabolic rate of the body, as more calories are consumed in the digestion process. This in turn leads to the production of more internal heat..
Do warm-up exercises.
Light a fire and use reflective surfaces.
If possible, always be located on the south side to receive maximum solar heat..
Drink warm or hot liquids with sweets or sugar dissolved in them.
2. Reduce heat loss.
Wear appropriate clothing and shoes..
Especially warm the head and neck.
As soon as possible, immediately change from wet clothes to dry.
Find or make shelter or shelter.
Maximum isolation of the body from cold surfaces.
Stop alcohol completely.