Portable Water Heater - SunRocket Solar Thermos and Kettle - Boil Water With Only Sunlight

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Price: $59.50 $50.83   

Product Feature

• SunRocket Solar Kettle Portable Water Heater

Product Description

SunRocket Solar Kettle Using the latest in solar thermal technology, the SunRocket uses an evacuated tube, boosted by reflective panels to heat and boil water. When opened it can heat water in as little as 30 minutes (weather dependent) and then closes to act like a thermos, keeping water hot for hours. The SunRocket is perfect for home energy saving, camping, picnics, sports events, fishing, boating or disaster preparation. The SunRocket is an essential part of any emergency preparation or first aid pack. It can melt snow, pasturise stream water or make sterile water for medical use through heat treatment. The SunRocket is scratch and weather resistant, compact and lightweight. The SunRocket is made from quality materials under ethical and environmentally sensitive manufacturing processes. Great gift idea for those hard to buy for! Specifications: Dimensions: 45x11x11cm (17.7x4.3x4.3 inches) Volume: 500ml (17oz) Weight: 1kg (2.2lbs) Materials: Evacuated vacuum glass tube made from Vycor glass (95% silica, high temperature and thermal shock resistant) and copper / aluminium absorption. Reflective aluminium panels, high quality scratch and weather resistant plastics, pressure release valve.

Portable Water Heater - SunRocket Solar Thermos and Kettle - Boil Water With Only Sunlight Review

I purchased this just to have in my 'kit'--I'm not a 'prepper' per se but like to have options. I read the reviews of this unit and also investigated a very similar device recently released in Britain called Solar Kettle, and this one seemed a bit better designed and had more history. Price was about the same. I didn't really know what to expect and was a bit skeptical as is my nature, although I tried to keep an open mind and the concept seemed sound. The SunRocket arrived yesterday afternoon (way early considering the Memorial Day holiday) and even though it was nearly 3 pm I thought I'd give it a quick go. I washed and filled it, and sat it on my patio facing roughly southwest. I left off the lid and inserted an electronic kitchen thermometer. The water was 80 F initially, and within a few minutes it started to climb. I got a little less than a degree per minute for the first hour. As the sun moved farther west I stood the unit up on its base and it continued to climb slowly, ultimately hitting 160 F at around 4:45 PM at which point I brought it in and made some excellent tea.
Last night, before I went to bed, I refilled the unit and with the lid in place sat it out on my patio facing due south, which would then be the optimum direction at 12:30 PM. In the morning I went out around 10 AM, with the sun nowhere near hitting the unit head on, and unscrewed the lid to take an initial reading. Well, to my surprise the water was already boiling like gangbusters, and my reading was 207 F which was about right for 1550 feet above sea level. To be fair I am just east of Phoenix AZ, and it is getting on toward summer so it's around 85 out as I type this, but still...not bad. Clearly it'll do the job when needed.
Construction wise, the glass vacuum bottle seems heavy and well-made. The rest of the case is, well it isn't anodized aircraft aluminum but it isn't paper mache, either. It's adequate. The reflectors look like they could be easily scratched so use only damp soft towels to clean then. Something else--there are two pins which interlock into little holes along the edges of the doors when the doors are closed. These pins are held in place by magnets only, so use caution as they'd be easy to lose if dislodged. No biggee--just something to be aware of. All in all, this is a decent device that works as advertised. I may update this later on with formal time based measurements as I am both an engineer and anal that way, but for now I hope this helps.
Update: I think the pins along the door edge I referred to above were not supposed to come out of their little holes on the opposing door. The next time that happens, typically when it's hot, I'll dab a little 100% silicone adhesive to the backs of the 2 pins doing this and push them back into the holes which should solve the problem. Minor manufacturing defect I guess or perhaps they're just supposed to be friction fit, but it's no problem to correct... if the manufacturer reads this it can be addressed at that end? Doesn't change my overall opinion.
Update II: Based on a couple more tests, I think it's reasonable to expect a temp. rise of around 1 deg. F per minute under optimum conditions. I'm consistently getting boiling water in 2 hours, under bright sun and turning the device to keep it aligned well. And honestly with the vacuum flask I don't think outside ambient temp. is going to have that much of an effect. It certainly does work as advertised...

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