had a idea the other day for a pump which could be easily switched
from heating to cooling whilst also being able to produce a high
volume of usable liquid.
The core of the idea is to create a 3d printable pipe fitting which
would force the water in a narrow pipe to flow down the side of a
wider pipe in a film ( the idea came when constantly getting liquid
running down the side of a dodgy beaker.)
the wider pipe would have peltiers stuck on and temp whether in
cooling or warming mode would have a removable insulating jacket.
At the bottom of the pipe is where the final temp variations occur and
this is where my mains thoughts are at the moment. My initial thoughts
were to have an immersion coil at the bottom but quickly realised this
would become redundant during a cooling cycle so my thoughts are could
you rig up a cooling fans heatsink to act as both heating element ( up
to 90 deg c) and heat exhanger during cooling.
Finally optimal effeciency would be achieved by monitoring the water
levels on the bottom chamber so that if the water level rose above the
top of the heatsink a solenoid valve would shut off the inlet water to
ensure max surface area usage.
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