The Navitron's C-zero Solar Kettle/cooker is a kettle
designed and developed by Navitron Ltd of Oakham. Described as one of the most
efficient kettles in the world it similarly runs off evacuated solar inverter technology, uses no
electricity whatsoever by running exclusively off solar energy, has a capacity
of 2 litres, takes about 3 hours to reach boiling point starting at ambient
temperature and retains heat for a disproportionately long time, taking in
excess of 15 hours to cool right back to ambient temperatures.
Another variant is the solar
grid inverter which is also a very similar design which also uses evacuated
solar principles to harness the solar energy from the sun needed to heat the
kettle. This kettle takes between 30 minutes to 3 hours to boil water and will
still heat up, albeit slower on an overcast day because the embedded vacuum
tubes absorb infra-red rays.
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