Wood Chip drying spec

[haywoodj]

Relative Humidity - air wetness

I can control it two ways, the fans have sensors on that can be programmed as required.

Same for the heat pump. I can set the parimeters and walk away. If there isn't enough heat the air gets wet and could shut fan off. Raining makes the system work harder.

Hi, did you get anywhere with your trials on airflow and RH. We are drying chip now on a drying floor as you were and I'm asking myself the same question - any advice?
Many thanks

 

[Doing it for the kids]

What set up do you have and what have you tried so far?

 

[haywoodj]

What set up do you have and what have you tried so far?

This is a 600T grain/onion store with drive over wooden slatted floors. We have the woodchip heaped up around 4-5 feet and around 100 wet tonnes of it so far. Currently blowing it at 70% output from 4 X 15 KW axial fans. Ground source heat pumps giving an RH in the duct of 55-60%. Pressure in the duct around 1.7mBar. I can feel the air escaping the surface of the wood chip so I'm thinking I'm maybe blowing it harder than I need to.
Crop has come in at 50% MC, need to get it down to below 30% which I'm thinking will take around 2-3 days.

 

[haywoodj]

This is a 600T grain/onion store with drive over wooden slatted floors. We have the woodchip heaped up around 4-5 feet and around 100 wet tonnes of it so far. Currently blowing it at 70% output from 4 X 15 KW axial fans. Ground source heat pumps giving an RH in the duct of 55-60%. Pressure in the duct around 1.7mBar. I can feel the air escaping the surface of the wood chip so I'm thinking I'm maybe blowing it harder than I need to.
Crop has come in at 50% MC, need to get it down to below 30% which I'm thinking will take around 2-3 days.

This is our first time, so haven't tried anything else yet.

 

[Doing it for the kids]

We were drying on similar terms but RH was a little lower.

We found the first day or 2 produced loads of condensation, the bottom got dry quickly but the top crust took a while longer. You can dry shallower but then you just end up with less turnover.

You must be spending a fair bit on electric with fans and heat pump? Is this for your own use or to sell on. Where are you based?

We knocked it on the head after a few years, it was good to start with but values fell and spare staff hrs I had reduced so we would have ended up busy fools really.