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newsSilicone sponge strip for solar distiller
For the solar water distiller prototype #2, I used EPDM sponge
rubber strip, 3x10mm, as the gasket between the glass and wood frame.
EPDM rubber is one of the better rubbers, but still not classified as
"food safe".
Gradually working toward building #3, and for that have located a supplier of silicone sponge strips:
I ordered 5x15mm, 5m length, total cost including postage and GST to Australia was AU$30.47
For the record, here is another supplier:
Prototype #3 will probably not be built for a considerable time, as
need to do more testing of #2, plus solve some issues, such as getting
lower water drip rates. As mentioned in a post yesterday, I need to get
the drippers down to about 0.4 - 0.7 litres/hour. Standard drippers from
a hardware store only go down to 2 litres/hour. Carocell achieves this
low rate by a custom designed dripper, and a water head of about
48cm. Cuurently, have three 1mm diameter holes in aluminium pipe,
but this does not give much control of dripping rate.
Tags: nomad