300L fermenter design help please

[simon12]

I am in the process of setting up a 300l gluten free nano brewery on a very low budget. I have a guy that can make the tanks to whatever specification I want but knows nothing about brew vessels. The fermenter will be a 1m high tank with a conned bottom the issue I have is the temperature control. I am thinking have a stainless steel tubing coil inside the circulates water to cool and warm with a maxi chiller and an inline aquarium heater controlled by an ST1000 type controller. Are there any better ways? If this is the best way any idea what the coil length should be and can these both be used on the same coil or would it need separate chilling and cooling coils? Also any help with what fittings are best for the coil appreciated.

[chris2012]

You could wrap the cooling/heating coil around the outside of the fermenter, that way
it'd be easier to clean the internals potentially?

[dloper]

Alternatively, you could partially double skin the fermenter and run cooling/heating water between the two skins. This would give a bigger contact area than coils.

[simon12]

Cheers for the replies, I was thinking of the partial double skin but wanted to keep the weight down as the coils would be removable if I need to move the vessel. Does anyone know how they work in 10bbl+ setups?

[Matt12398]

The benefit of a coil is that it's cooling the fermentation internally. With a jacket or double skin you're chilling the outside of the liquid. Having said that, if you're using a big conical most likely it will be glycol jacketed and doing exactly that.

[Fil]

If on a budget i would consider hdpe blue barrels for FV's way cheaper than a fabricated custom job, and if scratched pennies to replace,

use ex product coils from a chest chiller, thin profile so wont catch much sediment, and easily agitated to shake off any caught sediment..

i use one in my 80l fv to great effect