How long does a thermos keep warm and what does it depend on?

Content
  1. What influences heat saving?
  2. Selection rules
  3. Popular Models

A high quality thermos that keeps heat for a long time is useful in every home. It is convenient to take it with you on a picnic, on a long trip or even to work. A good product retains heat for a long time, the drink will not cool down in one hour. It is worth considering how long the thermos should keep warm and what it depends on.

What influences heat saving?

Everyone gets a thermos in order to take hot coffee or tea with them. The main thing is to keep your favorite drink warm for as long as possible. As a rule, such products keep the temperature on average for 6 hours. But there are models that retain heat for up to 12 hours, provided that the thermos does not open regularly. Several criteria influence the duration of heat preservation of a thermos.

  • One of the factors is the volume of the product itself.. For example, if you pour boiling water into a smaller container, then you should not count on long-term heat retention. The larger the volume, the longer the heat will remain.
  • It depends on how full the container is. If a thermos, for example, with a volume of 1 liter, is only half filled, then the hot drink will cool faster than in a thermos that will be filled to the end.
  • As a rule, large thermoses-jugs or classic thermoses, which are convenient to take with you on a hike and to work, retain heat longer than a thermal mug. Therefore, it still depends on the type of product and what you are purchasing it for.

Important! The material from which the thermos is made, its quality and some other criteria affect the preservation of heat.

Selection rules

When choosing a quality thermos, many are of the opinion that a metal accessory will retain heat longer than a plastic product. In fact, this is not always the case. Even if the model is made of stainless steel, but the metal is very thin and of poor quality, then such a thermos will not be able to effectively retain heat.

It is best to choose a product with thick metal walls. In addition, there should be a vacuum space between the body and the flask itself, which allows you to retain heat longer. The best option is a product made of high-quality metal with a glass flask. And you can also choose the option with a stainless steel flask. Such a model will also retain heat well and, unlike glass, will last longer.

If you want the accessory of your choice to keep warm longer, pay attention to the diameter of the neck. The smaller it is, the longer the heat will remain, even with regular opening. It is also important to pay attention to the type of cover. It can be a screw cap, a plug or a valve. All of them allow you to retain heat efficiently and for a long time, but the cork lid is less practical, since it can be lost, and it also wears out quickly.

You can evaluate the quality of the product in just 10 minutes. Pour boiling water into a thermos, if after 10 minutes the case heats up, then such a purchase should be discarded.The case of a quality product should remain cold.

Popular Models

It is worth paying attention to several well-known companies.

  • A large number of positive reviews are received by the company's products Penguin. Most of the models of this brand are great not only for hot, but also for cold drinks. There are compact and practical models with a volume of 1 liter, which are convenient to take with you. Thanks to its high-quality design, the product retains heat or cold for up to 16 hours.
  • Brand Tatonka produces high-quality, compact and practical thermoses that are able to keep warm and cold. The temperature is maintained for more than 20 hours, thanks to which the thermos can be taken on a long trip. All models have a practical design, which makes it easy and convenient to use the thermos in any conditions.
  • Zojirushi - Another popular brand that has established itself only on the positive side. The product of this brand will last a long time, as it is completely made of high quality stainless steel. Thermos is able to keep warm up to 12 hours.
  • You can consider practical and convenient models from the company amet, which are made of high quality stainless steel. You can choose a model of any convenient size. All of them perfectly cope with their task and keep the temperature for more than 12 hours. There are models that can be used for both hot and cold drinks.
  • A variety of high quality models are produced by the brand Thermos. Everyone can easily choose a convenient type of product and the desired volume. Most models are great for hot and cold drinks. The temperature is maintained for 24 hours. Such a thermos is convenient to take with you on a long journey.

For information on which thermos holds heat better, see the following video.

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