Re: [biofuel] bubblewash alternative

2001-06-01 Thread Keith Addison

Simon Wells's airstone made from an 8-inch grinding wheel.
http://veggiepower.org.uk/bubblewash.htm

>Hi all.
>Bubblewashing as i see it can be a pain.
>It works very well, but when it comes to larger batches than 50 litres, the
>aquarium pump just dosnt do the job.
>Those blue ended air stones erode even at the sight of Biod.
>So what do you do for an air supply? have a noisy and expensive larger
>compressor? a handy 300 bar diving cylinder?
>Maybe you have an alternative air supply that isnt going to cost.
>The way I see it, fine jets of water from above the oil makes a lot of
>sense.
>Get a pond pump that isnt going to blow you away, stick it in a recycling
>mode,
>make the jets from 15mm copper pipe <.05mm diam 5mm apart, really straight,
>Those pesky inner burrs are going to throw your water jets cascading into
>each other.
>Answer, drill straight through the pipe, put a bit of sand in pipe to
>protect the holes from the solder when you fill up the initial holes. :)
>If the pump is too strong and youve got mini whirlpools, dont put a water
>restrictor inline, this will make the pump pull more current costing you
>money.
>Alternatively stick some form of voltage control on the pump ( Bob G, help
>me out here).
>Again, i take no credit for the overhead water wash, the ideas for drilling
>and controlling came to mind whilst typing this mail. :).
>Ian


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Re: [biofuel] bubblewash alternative

2001-06-01 Thread Biofuels

Air brush compressor


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[biofuel] bubblewash alternative

2001-06-01 Thread ian

Hi all.
Bubblewashing as i see it can be a pain.
It works very well, but when it comes to larger batches than 50 litres, the
aquarium pump just dosnt do the job.
Those blue ended air stones erode even at the sight of Biod.
So what do you do for an air supply? have a noisy and expensive larger
compressor? a handy 300 bar diving cylinder?
Maybe you have an alternative air supply that isnt going to cost.
The way I see it, fine jets of water from above the oil makes a lot of
sense.
Get a pond pump that isnt going to blow you away, stick it in a recycling
mode,
make the jets from 15mm copper pipe <.05mm diam 5mm apart, really straight,
Those pesky inner burrs are going to throw your water jets cascading into
each other.
Answer, drill straight through the pipe, put a bit of sand in pipe to
protect the holes from the solder when you fill up the initial holes. :)
If the pump is too strong and youve got mini whirlpools, dont put a water
restrictor inline, this will make the pump pull more current costing you
money.
Alternatively stick some form of voltage control on the pump ( Bob G, help
me out here).
Again, i take no credit for the overhead water wash, the ideas for drilling
and controlling came to mind whilst typing this mail. :).
Ian



Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html
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