Drying Coco Peat and Coil

You really need to do pilot-scale trials.

I hear the sun is good for drying stuff out

Sorry....probably not the answer you are looking for.

Coco peat = Coir dust normally contains up to 90% moisture and it sshould be reduced at least down to 22/20% .in most cases this is done under the sun - open air- using solar radiation. RH , sun light and the wind velosity are the main three factors determin the speed of th eprocess. most suitable layer thickness is 50/100mm and by mixing/turning the layer expidite the process by 60-100%.

if any one can provide transparent roof canopy over the layed coco pith it will enable you to do the drying through out the year even in rainy days.

can use drying machine consisting electrical blovers and thermal heat generated by saw dust burners which cost from USD 60,000 depending on the capacity