How many liters does a thermos bottle usually have?

Ordinary thermos bottles are generally 2.27 to 3.63 liters. The small bottle is 4 kg, which can actually hold about 2000ml of water (about 2.27 liters); 8 kg, the actual water volume is about 3700ml (about 3.63 liters). The function of a thermos bottle is to keep the temperature of hot water in the bottle and cut off the heat exchange between the bottle and the outside, so that the "heat" in the bottle can't get out and the "cold" outside the bottle can't get in.

Ordinary thermos bottles are generally 2.27 to 3.63 liters. The small bottle is 4 kg, which can actually hold about 2000ml of water (about 2.27 liters); 8 kg, the actual water volume is about 3700ml (about 3.63 liters). The function of a thermos bottle is to keep the temperature of hot water in the bottle and cut off the heat exchange between the bottle and the outside, so that the "heat" in the bottle can't get out and the "cold" outside the bottle can't get in.