Why doesn't wet hair warm?

It is extremely important for geologists, tourists and fishermen to wear clothes that not only warm superbly, but also slowly get wet. Things made of wool correspond to both parameters. However, there is no consensus on how a little and thoroughly wet wool equipment behaves . The question is whether it warms or not. The latter option has scientific evidence. Let us consider in more detail why it does not warm, and is it really so.

How to explain the lack of heat from wet hair?

In hot weather, doctors recommend frequent washing and wiping with a wet towel. There are 2 reasons for this:

  • the liquid, evaporating from the surface of the body, cools it;
  • cold water affects heat transfer faster than hot air.

Thanks to grinding, a person begins to feel better due to the fact that a stronger factor begins to influence his heat transfer than hot air. This factor, in addition, briefly lowers the temperature. It turns out double benefit.

Important! Woolen clothes in a dry state warm well due to the air between the wools. Water displaces air, which fills the gap between the villi. Due to the replacement, the jacket or cap stops warming.

Knitted things when wet not only cool, but also dry for an extremely long time . The fleece used when sewing kits for extremals dries up 8-10 times faster. This means that the protective and warming properties are returned to it 8-10 times earlier, and therefore it carries much less threat to health.

Products dry faster than natural wool, which simultaneously includes both wool and polyester. In this case, the fibers must be arranged in a certain order. Otherwise, damp wool will transfer moisture from itself to the artificial material.

What animal fur can still warm?

Manufacturers of tourist clothing insist that merino wool - a breed of sheep - retains its heat-shielding properties even after wetting. This thesis of the company is confirmed by personal research (this means that they were carried out in laboratories owned by the companies themselves). The descriptions of the experiments are freely available; they are easy to read if you wish.

However, neither physicists, nor chemistry, nor medical workers are able to confirm or refute the merino hypothesis. There is no evidence that the theory was confirmed in the course of independent research. Therefore, the version of the manufacturers can be taken both seriously and skeptically. Perhaps talking about preserving quality is just a marketing ploy designed to boost sales of specific goods for tourists.

Blogger Ross Gilmore insists on the last point. The author of the articles conducts experiments designed to confirm or refute the shocking statements of manufacturers about their products. During one of the experiments, Ross checked the heat-shielding properties:

  • slightly wet wool camping equipment;
  • heavily soaked woolen clothes in the wind;
  • heavily soaked wool items in calm weather;
  • drying out heavily soaked woolen clothing;
  • heavily soaked woolen wardrobe items whose moisture is constantly nourished.

As a result, Ross came to the conclusion that the difference between things from ordinary wool and merino wardrobe items is minimal . They behave almost the same.

Important! Blindly trust the results obtained by the blogger, even if it is world famous, is not worth it. The human factor, subjective opinion, subtle violations of technology could interfere with obtaining an objective assessment.

There is also an opinion that dried goatskin wardrobe items keep warm and wet and dry. This is explained by a more uniform inner layer of fiber.