There will be a lot of water drops and moisture when the weather is sunny at home?

When the weather turns from rainy to sunny, small water drops sometimes appear on the tile floor and walls indoors, that is, the phenomenon of "moisture regain" The absorption and heat release during the change of state and "moisture regain" are liquefaction and heat release. "Moisturizing" refers to the appearance of small water droplets on the ground and walls. According to the knowledge of state change, there will be small water droplets during liquefaction and melting, and there is no solid water-small ice crystals in the room, so it is formed by water vapor in the air, which is a liquefaction phenomenon; In the change of material state, melting, vaporization and sublimation are endothermic; Solidification, liquefaction and sublimation are exothermic. In spring, the temperature of the ground and walls is relatively low, and the water vapor in the air turns into small water droplets when it is cold, which adheres to the ground and walls and makes them moist, that is, the phenomenon of "moisture regain", which belongs to liquefaction, and heat is released during liquefaction.