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Heating Oil for a Jacketed still


whiskeytango

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bio diesel works well, be sure you get 100% bio, no blends.

otherwise any vegtable oil will work, they will heat up a little slower and will create a sticky residue. but is cheap and easily accessible.

we hv at least 20 of these units in regular service, most choose the veggie oil route just cause its easiest.

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  • 7 years later...

We suggest vegetable oil for our baine marie stills.   We also have a device that allows you to convert your baine marie still to a self fired electric steam still.    Basically the device allows you to create steam under pressure in your heating jacket while maintaining the jacket as an open system.  

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2 hours ago, Southernhighlander said:

We suggest vegetable oil for our baine marie stills.   We also have a device that allows you to convert your baine marie still to a self fired electric steam still.    Basically the device allows you to create steam under pressure in your heating jacket while maintaining the jacket as an open system.  

What are the power requirements of this "device"?

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5 hours ago, Southernhighlander said:

Basically the device allows you to create steam under pressure in your heating jacket while maintaining the jacket as an open system.  

can you please elaborate on this a bit more?

thanks 

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17 hours ago, Bronfen said:

can you please elaborate on this a bit more?

thanks 

I call the device an Open System Pressurization Module (OSPM)   Basically the OSPM uses water column to maintain pressure in an open system.  Your still's current baine marie heating system heats water in the jacket.  The OSPM is connected to the jacket.  The water column in the OSPM holds pressure that is created by the immersion heaters creating steam in the jacket.  If the rated pressure of the OSPM is exceeded, then a little water is pushed out of the OSPM into your drain, so the system is very safe. 

 

Since the only thing between atmosphere and the steam in the jacket is water, it is technically an open system and therefore, just like a baine marie still, it does not fall under the rules of a closed pressurized system.  We have 2 OSPM designs.  One operates at 6 PSI max and the other at 12 PSI max.  The metal thicknesses of your inner pot and jacket dictate if your still can be utilized in this way and if so, which OSPM is best for your still.  If your still pot is constructed of 304 stainless the jacket and pot walls must be at least 3mm thick for the 6psi model and at least 4mm thick for the 12 PSI model.

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  • 2 weeks later...
On 10/14/2021 at 10:53 PM, Bronfen said:

How about mineral oil?

I would like to draw your attention to the fact that Mineral oils are a poor conductor of heat and are inferior to water and water-based fluids, the thermal conductivity of which is about 5 times higher than the thermal conductivity of oils.

Therefore, if you want to use oil instead of heating water, you will have to recalculate (increase) the heat transfer surface by about 3-5 times.

The oil can be heated up to 200 Celsius at atmospheric pressure (water can be heated above 100 Celsius only under pressure), but this can lead to drying out and burning of the mixture (mash) on the walls of the heat exchangers and the tank.

The oil is more flammable (oil vapor).

Southernhighlander offers a very good solution.

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On 10/29/2021 at 7:43 AM, Alex_Sor said:

water-based fluids, the thermal conductivity of which is about 5 times higher than the thermal conductivity of oils.

so what are the water based fluids that you mention?

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On 10/18/2021 at 12:31 PM, Southernhighlander said:

We suggest vegetable oil for our baine marie stills.   We also have a device that allows you to convert your baine marie still to a self fired electric steam still.    Basically the device allows you to create steam under pressure in your heating jacket while maintaining the jacket as an open system.  

Here is a link to a good thread on switching your bane marie to steam. I truly recommend it, it is clean and quick to react to power input changes

 

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