A solar-powered water pasteurising
device called Solsaver, designed by
John Grandinetti, president of
Grand Solar Incorporated of
Hawaii, USA, may bring an end to
people falling prey to water-borne
diseases (World Watch, VoJ8, No 5).
The Solsaver uses thermal action
to move the water which flows
through copper tubing into a glass
solar collector for heating, and is let
out through a valve which opens
when water reaches a temperature
of 65C. Awaiting field trials, Sol-
saver comes in various sizes, with the
smallest providing roughly 1361itre
(I) of pasteurised water per sunny
day, and the largest yielding 1,091 l.
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