pumps [was: temp misreadings]
- --- Harry <gnikomson2000@...> wrote:
>I'm quite satisfied with my pumps, both being fountain pumps. It's been so
> > i tried one of the fountain pumps but it wasnt up to the job, i
> > now use a half horsepower pump an it does its job great
> I assume you have a coil condenser? High friction low volume ratio
> is always a problem with them.
> There's a big difference in running costs between a 24w full duty
> cycle pump and your 373w pump, especially if you're running for many
> hours at a time. Some of the big pumps aren't designed for
> continuous duty cycle. But if it works for you, & you don't mind
> the high cost of operation and possible short working life of the
> pump, then that's fine.
long since I discarded the packaging that I have no idea what their ratings
are. However, my preference is to use a leibig style (straight tube-in-tube)
condenser. This is a very low resistance style arrangement so low pressure is
generally not a problem. When I run reflux runs, I have a smaller pump
dedicated to the reflux coil and a larger pump for the final condenser (the
leibig style). What I found is that running water from a bucket through the
reflux coil (single spiral) and letting it drain instead of recirculate (to
ensure constant temperature) it is actually more than enough flow through the
coil and I shunt some of the water back to the bucket before it gets to the
coil in order to maintain the proper head temperature (AKA c.m. or Cooling
Management). All the liebig condenser has to do at that point is to cool the
vapors that get past the reflux coil...the larger pump is most likely much
overkill in that application.
I suppose there's a point to my rambling :)
Oh yeah, perhaps dividing the duty between smaller pumps can be more efficient
than boosting the power of a single pump to handle it all. Design helps too,
in order to reduce the flow resistance and to allow the pumps to operate at
maximum efficiency, too. It's no sense in throttling back a pump that's 4
times the required size when two smaller pumps will cost less than half and use
less than half the power...carried forward to the electric bill.
For my own benefit, having a small cache of pumps allows more options to
experiment with and allows cost effective expansion/augmentation as necessary.
More components means (to me) more options and configurations...sometimes only
for fun and not for any operational necessity. But then, we're all in this
hobby for fun and not necessity, anyway, so it's spot on :)
-eyeing some undeveloped acreage for my, er, "experimental fuel plant"
- The following Distillers poll is now closed. Here are the
POLL QUESTION: Potstillers
How do you decide when to make a cut in your spirit run ?
CHOICES AND RESULTS
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