Which water freezes faster and why it happens can be influenced by the snow cover that is in the freezer of the refrigerator used for the experiment. If you take two containers that are identical in volume, but one of them contains hot water and the other contains cold water, the container of hot water will melt the snow below, causing the contact of the thermal level with the wall of the refrigerator. A cold water tank cannot do that. If there is no liner with snow in the refrigerator compartment, cold water should freeze faster.
Also, the phenomenon where water freezes faster – hot or cold, is explained as follows. According to certain laws, cold water starts to freeze from the top layers, while warm water does it the other way around – it starts to freeze from the bottom up. At the same time, it turns out that cold water, with a cold layer on top and in some places ice has already formed, thus exacerbating the processes of convection and thermal radiation, explaining which water freezes faster – cold or hot.
The heat goes out, tends upwards and there it meets a very cooled layer. There is no clear path for heat radiation, so the cooling process becomes difficult. Hot water has no such obstacles in its way. Which freezes faster – cold or warm, on which the likely outcome depends, you can expand the answer by the fact that certain substances are dissolved in water.
Impurities In Water As A Factor Influencing The Outcome
If you don’t cheat and use water of the same composition, where the concentrations of certain substances are identical, then cold water should freeze faster. But if a situation arises where dissolved chemical elements are only available in warm water, and cold water has none, there is a chance that warm water will freeze sooner. This is explained by the fact that solutes in water create crystallization centers, and with a small number of these centers, the transformation of water into a solid state is difficult. It is even possible to supercool water, in that it will be in a liquid state at temperatures below freezing.
So At What Degrees Does Water Freeze?
An interesting property of distilled water is observed at negative temperatures. If you put a piece of ice, snow, air or dust in it, crystals will immediately appear in the entire volume.
This is due to the fact that tap water has many crystallization centers: salts, air inside, container surface, and so on. Purified liquids do not have such centers. As a result, she can be significantly hypothermic.
The laws of physics state that the more a liquid is purified of impurities, the lower the threshold for transition to a solid state.
Distilled water freezes at -10°C and below. This explains the advantage over other heat carriers during the heating period. Due to this property, when heating a room, it can compete with antifreeze.
At The Same Time, There Are A Number Of Additional Advantages Over Other Coolants:
safety for people’s life and health;
respect for pipes;
Now you know that distilled water freezes at temperatures below 10 degrees, so you can stay calm about your heating system.