I have come up with a design for a small watermaker
with some cool features that I find appealing to boaters. It would be fantastic to get the feedback from the cruiser community on the level of interest and the price
point. Here are the specs:
- Compact design, based on a 2.5" x 14" pressure vessel
- Fresh water
output around 2-3 gph @ 15A from a 12V DC supply
- Stainless steel pump
and components, all food
- Relatively quiet, louder than a fridge but not by much
- One switch operation with digital display of pressure and water
- Integrated safety
, i.e. switches off if pressure above normal or salinity high
- Automatic switch on/off when water tank level below a pre-set points
but the automatic on/off depending on water tank level will require calibration to the installed analog sensor on the boat
. I am still working on an automatic pressure adjustment (so that the watermaker
will maintain optimal pressure in different temperature/salinity environments) but that is proving costly. In any case, if done manually such adjustments would be needed rarely (i.e. when you change your sailing area, somewhat similar to magnetic deviation adjustment).
I am aiming to wholesale this product at around $2,000. The basic concept
is that I envision watermakers to function as fridges, you set it up, there is one switch on/off/auto and in auto mode, the tank gets refilled automatically the same way the fridge temperature is maintaned automatically. The idea is never to bother with cleaning
the membrane but keep it alive through continuous operation and replace ($300 replacement cost) after a long period of non-operation.
Would you buy one?