Grey water heat exchanger GFX

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Sorry about the incomplete post. I hit <SEND> before the thought was complete.....
In Southern Arizona, water's the important resource. Easiest, ( and most successful ) is to save washing machine water.
Have the machine empty into a 55 gallon drum on the back porch.
The simplest use is to use the water to drip-feed the garden.
The more elaborate installations pump the water to an overhead holding tank. From there, it's gravity fed to the toilets, where it's used to "flush".
<rj>
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Phil Scott
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Phil Scott wrote:

Having struggle through the info on GFX website, it looks like fouling (at least from what they say) is not a problem due to the very high flow velocity.
As opposed to a "flooded" heat exchanger where flow velocity is much lower
cheers Bob
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BobK207 wrote:

down the walls is VERY VERY rapid. Solids will tend to bump the sides infrequently as they fall thru the 3 to 6 foot length. GFX has documented installations that include blackwater processing that have been in continuous service for 5-9 years with NO clogging, no cleaning needed. Since the installation method uses clamps, it would then be easy to open one up after a few years to see what gunk is caked to the inside walls.
But with the water velocity quoted, even a small about of residue that sticks when a solid bumps the wall will be quickly washed away by the rapidly flowing water
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And the efficiency is fairly low, especially with a bathtub.
Nick
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snipped-for-privacy@ece.villanova.edu wrote:

And your heat exchanger does nothing to correct that either as BOTH require flowing warm waste water to do their work
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Wrong.
Nick
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