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A cloth on a canteen helps cool the canteen only if it is kept wet.
When water evaporates what it is doing is changing state from a liquid state to a gaseous state. The water doesn't change temperature at all but it requires the addition of heat to change state. That heat is called the latent heat of vaporization. The latent heat of vaporization for water is 1060 BTU/lb. That is quite a bit. When the water in the canteen cover evaporates it has to draw heat from somewhere. It draws it from the canteen skin which, in turn, gets it from the canteen contents, and cooling the contents.
If the canteen cover dries the process stops and heat flows in the other direction (from hot to cold). The cover probably provides a little insulation value, but not very much.
Check this out. You might find it interesting. Fifty years ago it was not unusual to find something like this hanging from a front bumper. It looks like they are still available.
http://www.lifestylestore.com/ls_survival_water.html
What else can I help you with?
If any gal takes sex pleasure with the help of putting cloth between her vagina after puberty then what will be the effects on her?
None at all
During which heat emergency do you cool the causulty's body with cool water?
If the patient is suffering from heat-stroke, cooling, shading is important. Sipping cool water will also help, but avoid very cold water. A cool cloth on the forehead, back of the neck, will also help to bring the temperature down.
How to prevent bed head.?
You can prevent bed head from happening during the night by putting a cloth over your hair. This will help keep your hair in place.
In the book holes why won't Stanley drink from his canteen?
he thinks Mr.Sir will put something in his canteen
What's a good book to help you with your putting?
The Art Of Putting by Stan Utley is a great book to help a person with their putting.
Should you use a cold or hot cloth when your head is burning up?
If your head feels hot, a cool cloth is typically more beneficial, as it can help lower your body temperature and provide relief. Applying a cold cloth can soothe headaches and reduce feelings of discomfort. Avoid using a hot cloth, as it may increase your body temperature further. Always consult a healthcare professional if you have persistent symptoms.
Can putting a wash cloth on pink eye relieve pain?
Actually, no i cannot. My Aunt is a doctor and she says that it cannot. It will reduce the pain but it will not help the pink eye to heal. All the heat does is numb it for a little while.
Write a letter to the canteen manager of your school complaining about the condition of the canteen and the quality of food?
A letter of complaint should start with addressing the person the letter is being sent to, and a detailed explanation of the complaint along with any solutions that could help the problem at hand.
What are canteen initials?
Canteen initials typically refer to the abbreviations used to identify specific food and beverage items, menu items, or service areas within a canteen or cafeteria. These initials can help streamline communication and ordering processes. They may also represent specific dietary options or highlight items that are part of a meal plan. The exact initials can vary by institution or organization.
How does people help monkeys?
we can help the monkeys by putting them in zoos
Need help putting it together lost directions?
need help putting a 1998 mitzubishi galant tranny back together
How to cool a glass of hot liquid?
You can cool a glass of hot liquid by placing it in the refrigerator or adding ice cubes. Another option is to place the glass in a bowl of cold water or wrap a wet cloth around the glass and let it sit for a few minutes. Stirring the liquid can also help distribute the heat and cool it down faster.
