Dear Steve'n'All
I remind everyone about a long discussion we had on this group about small batteries used to make LED light sources. Look in the database for 'lemon light'. An old phone battery that will not run the phone will run an LED for many hours, say 2 hrs a night for a month. There is a pot you can buy with a USB port on the end of the handle. There are TEG's galore these days which can be used by the stoves. There is a need for lighting and small amounts of power everywhere - watch National Geographic for a contest in this regard. It happens that in Mongolia and the countries around it, space heating is by far the major energy demand. That means there is a chimney involved. That could be replaced by a fan in certain cases if there is a good reason to introduce the extra complexity. I am optimistic about both approaches. The big problem has not been inadequate draft, it has been poor combustors and poor excess air control. I love the idea that batteries from motorcycles be used because a) they can be charged daily by the bike, and b) it means there is a local source of supply (in other words a 'developed market') and c) it is just what is needed to get the stove going without having to have an internal charger and storage medium like the Philips stove did. All the components are on the market. It only remains for the stove designers to start cranking out the products. Regards Crispin +++++++++ On 19 October 2011 08:31, Paul Olivier <[email protected]> wrote: Crispin, I have seen a rechargeable 12-volt battery that it quite small. This could be used in conjunction with the thermo-electric generation of electricity. But in countries where motorbikes are commonplace, then it is simpler to tap into their batteries. There are motorbike batteries - and presumably also mobile phone batteries freely available in most places in the world now aren't there ? Steve
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