THERE IS MOIST AIR IN A CLOSED CONTAINER. HOW CAN YOU REDUCE THE QUANTITY OF WATER IN THE AIR?
Dehumidifiers are used to reduce the moisture in the air in a closed container. Normally silica gel is used for this purpose. Some amount of silica gel if you put in the container, it will absorb moisture and the air is free from water vapour. In closed container heating the air will not reduce moisture as the water vapour will not escape and again it gets condensed.