As the fresh sawdust contains some humidity, and it is not suitable for fuel, and we need to use sawdust dryer to dry it.

The moisture content of fresh sawdust can be up to 45%, it is rather wet. If we use the sunshine to dry the wet sawdust, we have to make sure three things:

Firstly, there is one big floor area for loading the sawdust;

Secondly, the weather should be very good.

Thirdly, it needs many workers to do it.

We can find that the sunshine is not suitable for drying the sawdust in bulk, as it cost much money, and also is influenced significantly by the weather.

Then we need to find a way to solve this problems.