When it comes to this question, is it true or should you carefully go through the content in your mind, because the question itself is controversial. What kind of water cup is a thermos cup? Just take the definition from the International Cup and Pot Association and go home. After all, the definition given by the other party is the most authoritative.
But what is the best length of time for a thermos cup to keep warm? This question is a matter of benevolence and wisdom, and it varies from person to person. However, as someone who has been in the water cup industry for many years, I have some insights. Today I will analyze it for you and help clear up confusion for those friends who are always struggling with the length of time to keep it warm.
The definition of a thermos cup has been mentioned many times in previous articles. Today I will briefly explain it again. Pour boiled hot water into the cup. The temperature of the water in the cup is 96°C. The lid should be closed for 6-8 hours before opening. , measure the water temperature in the cup. If the water temperature is between 55℃-65℃, it is a thermos cup.
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Friends who use thermos cups have a misunderstanding. They always think that the longer the thermos cup is kept warm, the more qualified the thermos cup is. This cannot be blamed on friends. After all, many businesses now promote the quality of their own thermos cups. As an important promotional point for its own products, the insulation time has misled the consumer market over time.
Let me talk about my own views on the optimal length of heat preservation. First of all, when friends use a thermos cup, they mainly use its heat preservation function. Secondly, the season when thermos cups are frequently used is usually winter in various countries and regions. Finally, there are many friends who have this It is a habit to drink a cup of warm water with a suitable temperature when you wake up. I like to pour a cup of hot water before going to bed. When I wake up, the water temperature should preferably be 55℃ (of course, I am mainly talking about winter here. Everyone The glass of water you need after waking up will also change according to the season).
People generally sleep longer in winter, usually at least 1-2 hours longer than in summer. The average sleep time of people around the world in winter is about 9 hours. It can be obviously enough according to the insulation time of 6-8 hours defined by the International Cup and Kettle Association. Some of them are not able to meet the needs of winter. In addition, when many friends add hot water before going to bed, the water temperature does not reach 96°C, so we think that the insulated cup should be kept warm for 10 hours, even during the day in winter. , especially those who work or exercise outdoors for a long time, they will drink water more frequently during the day, and they will frequently open the lid of a glass of water to drink. Each opening of the lid is a heat release process, and the water cup will not last long after the heat preservation period. These people can also drink warm water after work.
There are also some friends in regions and countries where people have developed the habit of drinking cold drinks. They use thermos cups to hold ice water or cold drinks. Since the heating rate of cold water is slower than the cooling rate of hot water, the cooling time of the thermos cup is usually longer than the insulation time. , there is no authoritative statistical data on this point, but basically it can be said that the cold keeping time is about 1.2 times more than the hot keeping time, that is to say, the thermos cup keeps warm for 10 hours and keeps cold for at least 12 hours.
This also shows that a water bottle with 10 hours of heat preservation can fully meet the needs of friends who like cold drinks to keep cold during the day or night, especially in the hot summer.
Post time: Feb-01-2024