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Why some thermos bottles are good for 24 hours but others are for 48 hours?
Wiki User
∙ 9y ago
A thermos is only good because of the material it is made with. A thicker material will keep whatever is inside cold or warm longer.
Wiki User
∙ 9y ago
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Why does thermos bottles advertised as good for 24 hours while others are claimed to be able to keep liquids hot or cold for 48 hours?
Some thermos bottles advertised as good for 24 hours because they are better insulated. They also permit expansion due to heat.
Is a thermos flask also good for keeping water cold for several hours?
Yes. The thermos flask can reduce the amount of heat travelling from the surroundings to the cold water
Is a thermos good after 20 years?
Can be, if the vacuum is good. In glass thermos if the glass is not broken it is okay. In steel thermos if the vacuum has not been lost it will be. You can test a steel thermos by simply filling it with boiling water, if the outside of the thermos becomes hot the vacuum has been lost and one will need a new thermos.
Can you keep a thermos in the fridge?
I wouldn't see any reason why you couldn't keep a thermos in the refrigerator. Pre-chilling containers for cold beverages is a good idea anyway. ====== ======
Is using a thermos bowl for a kids lunch safe for them to eat if the food is out for 5 hours?
That depends on how good the thermos bowl is at holding hot or cold temperatures. It also depends on the ambient temperature where the filled bowl is stored. Using a thermometer, try testing it out at home to see if it holds the food properly for that period of time.
What is a heat-resitant container?
it is a thermos. It stores heat and Coldness. That is if you get a good one.
What are some good insulators for a thermos?
spongespaper towelglassduck tapesawdustmetals...these are excellent insulators.....
What is a good slogan for a thermos called heat saver?
Save the heat in heat saver the only thermos that saves all the heat put into it Save heat with heat saver
are reusable water bottles good for the environment?
You really should avoid reuse of plastic water bottles, due to the fact that they weren't constructed for long time use and might leech out material into the water. Instead, you should use a thermos or other item intended for long term use for your water needs.
How do you make a thermos without a vacuum that prevents heat?
Insulate the thermos with a very low heat-conducting material. Low density objects such as ceramic or foam are typically good insulators.
How does a thermos keep things hot?
A thermos keeps things hot by using a double-walled design with a vacuum in between the walls. This vacuum acts as insulation and prevents heat from escaping through conduction or convection. Additionally, the inner walls are often coated with a reflective material to minimize radiant heat loss.
How thermos flask prevent loss or gain of heat by?
A vacuum makes a good heat insulator.
