Biopowered - vegetable oil and biodiesel forum

Biodiesel => Chemistry and process => Topic started by: gerard b on July 19, 2013, 05:10:57 PM

Title: Demething
Post by: gerard b on July 19, 2013, 05:10:57 PM

Any of you guys got a clever way of keeping the water cold for demething? I demeth through a quad core condenser and normally demeth a 180lt batch (bio only) in a reasonable time of 2 to 3 hours. However with this very hot weather it's obviously taking longer as the circulating water is warm. My water reservoir is a 200lt water butt. At the moment i've got a hose from the mains water replenishing the reservoir and it helps but it's very wasteful and still not great. I was just wondering if anyone had any better ideas.

Title: Re: Demething
Post by: Julian on July 19, 2013, 08:04:11 PM

I bought a beer chiller, it helps but won't keep up with the evaporation rate of a 3Kw heater.  You could try pre-chilling a barrel, but again cost is an issue, chillers aren't cheap to run.

I've settled on using mains supply which is pretty constant at around 10°C.

I'm not on a meter and I'll worry about wasting the planet's resources when the water company sort their leaks out ... currently my water company waste 24.5 million litres per day!  One of the larger companies leak in excess of 600 million litres a day, so I don't think our usage will make a whole heap of difference.

Title: Re: Demething
Post by: BANDIT2 on July 23, 2013, 10:17:09 AM

car rad and 12v fan-run the water through that?

Title: Re: Demething
Post by: Rotary-Motion on July 23, 2013, 10:44:05 AM

hey bandit you home today?

re: the lutz swap deal bonanza telford styley

 8)

Title: Re: Demething
Post by: gerard b on July 23, 2013, 11:53:45 AM

Thanks for the suggestions, taken on board.

Title: Re: Demething
Post by: Tony on July 23, 2013, 02:48:39 PM

Maybe you could try fitting a SHHE?

http://www.biopowered.co.uk/wiki/Still_head_heat_exchanger