Trees adorned in a blanket of snow, the ground covered in a white layer, and frost lingering in the air – nature has provided an opportunity to enjoy magnificent views!
Forest, seashore, park, mountain – wherever we go to enjoy winter delights, it is necessary to make sure we don't get cold. A thermos with your favorite warm drink will help you warm up and indulge in winter joys. If it's time to buy a new thermos, questions may arise: how do they differ, which one is best to choose?
In a two-part series, we will look at the most important parts of thermoses, proper use, and learn to recognize defects. We will examine the differences between thermoses, travel mugs, and the types of insulation.
When choosing a thermos, travel mug, or travel cup, it is first important to understand its intended purpose. If you need to enjoy a hot drink for an extended period, for example, while walking in nature, a thermos will be the most suitable. If you need to enjoy a drink for a shorter period, for example, while on the go, a travel mug or travel cup will be best. If you want to enjoy the drink immediately and the journey is short, a travel mug will not be suitable, as the liquid poured into it will still be hot. In contrast, in a travel cup, the drink will cool down faster and be enjoyable after a short while.
- Thermoses on average keep drinks cold for up to 12 hours and hot for up to 24 hours;
- Travel mugs on average maintain drink temperature for 4 to 8 hours;
- Thermal bottles on average maintain drink temperature for 4 hours;
- Travel cups on average maintain drink temperature for 2 hours.
Now that we have learned the differences between thermoses, thermal mugs, and travel cups, we can look at different types of insulation, because this is one of the most important factors in how effectively the drink's temperature will be maintained. There are various types of insulation – single-wall only, double-wall insulation, double-wall vacuum insulation, double-wall foam insulation, and glass flask.
Thermoses with double-wall insulation are beginning to lose popularity, giving preference to vacuum insulation, which is much more effective, especially for keeping drinks hot. Without vacuum insulation, air remains between the thermos walls through which heat is conducted, and it does not serve as a good protective layer to maintain a consistent temperature.
Vacuum insulated thermoses rely on the absence of air between the walls for insulation. Instead of air between the thermos walls, there is a vacuum, thereby ensuring that air does not transfer temperature from the thermos walls and the original temperature is maintained longer in the thermos.
In double-wall foam insulation, air is divided into small bubbles and trapped between the foam. Foam insulation is not as effective as double-wall vacuum insulation because the trapped air accelerates heat transfer. Glass flasks are also used for internal insulation, which maintains temperature well but are dangerous because they cannot withstand impacts and shatter.
Higher quality brand thermoses usually have vacuum insulation. They also have a higher price, as the materials and manufacturing methods used are more expensive. When choosing the most suitable product for you, pay attention to what purpose you will use it for and how long you will need to maintain the temperature. In the second part, we will look at body materials, lid types, proper use, and learn to recognize defects.
