Answer
The process can be made more efficient by insulating the tank so that the entire heat of vaporization comes from the water itself.
Work Step by Step
Ice can be made by emptying the air in a water tank. Amid clearing, vapor is additionally tossed out, and along these lines the vapor weight in the tank drops, causing a contrast between the vapor weights at the water surface and in the tank. This weight contrast is the main impetus of vaporization, and powers the fluid to vanish. In any case, the fluid must retain the warmth of vaporization before it can vaporize, and it ingests it from the fluid and the air in the area, making the temperature in the tank drop. The procedure proceeds until the point that water begins solidifying.
