Hot water heated by the sun is used in many ways.

The water is heated at night and, if not used, stays hot during the day.

This is despite the fact that the water was not heated to the boiling point.

But water could only be heated by the application of considerable energy.

This process leads to the whole of the water being suddenly heated to boiling.

They would be washed together with those from breakfast, when there was more water heated.

I tried so far water heated to boiling then adding salt also.

The water is heated to around 70+ for optimal swimming conditions.

This was a metal tank filled with water heated by gas.

Prior to the water being heated over the fire, but little wind is emitted.