One of the many odd, and potentially annoying, phenomena that occur in a home is the "perspiration" WC: the accumulation of water on the exterior walls of the toilet cistern and seat, even when there is no leakage. The solution is a scientific phenomenon called condensation.
American Standard 3251D101.021 Toilet Bowl, Standard Height, Bone
Condensation
The condensation occurs no heating time, the humid air comes in contact with a cold and dry surface. The humid air contains molecules of evaporated water. As this moist air touches a cooler surface, the cold surface causes the air to lower the temperature. Some of the water molecules in the air fall back into the temperature sufficiently back to their liquid state, and they do so under the surface of the toilet tank. Cold water enters the bathroom of underground pipes, cooling the surface of the toilet bowl, which cools the air around it and causes condensation.
Other examples of condensation
Some other examples of condensation are more familiar. Water with ice in a glass, set on a table on a hot or humid day, will gradually accumulate in a puddle of water at its base and exterior surface. The ice and cold water in the glass make the glass itself cold. The surface of the glass cools that the air around it, and part of the moisture returns to its liquid state.
solution Principle
Now that the problem is known, you can solve it. All solutions to the problem try to cope with one of the three factors that contribute to the sweating WC: Cold surface, moist air, and hot air.
Solution 1: Anti-sweat valve
The first, and most dramatic, is to have an anti-sweat valve installed. This simple device is added to the plumbing line for the toilet and leaves just enough hot water in the toilet tank to raise the temperature of the bath surface and prevent condensation.
Solution 2: Dehumidifier
The dehumidifier removes most of the moisture from the air in your bathroom. By removing moisture from the air before it can condense on the surface of the toilet cistern, condensation is prevented. In practice, the dehumidifier works by causing condensation to occur inside the dehumidifier instead.
Solution 3: Low Thermostat
Finally, the thermostat can be lowered. Lowering the thermostat reduces the temperature difference between the toilet surface and the surrounding air. Since condensation depends on hot air touching a cold surface, cooling the air will reduce the amount of condensation.