their white paper http://www.cyclonepower.com/PDF/Cyclone%20Engine%20White%20Paper.pdf present their rankine engine concept.
it seems that direct drive is possible, since torke can be very high at starting. weight and power is ok... with LENR maybe the throttle will be less easy to control... maybe ther is a way to control power by throttling the steam/venting it. maybe a parallel hybrid could be used... they say that the total consumption with gasoline was quite normal, so with lenr efficiency should be correct... new ideas. 2012/2/8 Robert Lynn <robert.gulliver.l...@gmail.com> > While I don't think Stirling are good for larger sizes I do think that > they might work well for 0.2-3kW. Stirling engines were in large volume > production 100 years ago for small output applications (though they were > big and heavy), and the cost is less of a negative factor for small sizes > if they work well and can run for 10's of thousands of hours (which some > low output stirling engines like Infinia, Microgen and Whispergen can). > While at the moment those engines still cost $2-3000 per kW and are very > heavy (10's of kg per kW), the cost might come down by a factor of 3 or > more in mass production, and they do have good efficiency of up to 30%. > > Steam engines will be very strong competition, It's amazing how small and > powerful they are (competitive with IC engines). Check out cyclone power > http://www.cyclonepower.com/ to see how good they might be (claiming > 150kg, 75kW, and up to 30% efficient from a 6 cylinder radial steam engine > integrated with heater and condenser). But steam is also very dangerous in > a crash, and their might be reliability/life issues. I don't think I would > want to ride a motorbike with steam storage between my legs, and might also > be a bit concerned with it in a car. > > On 8 February 2012 20:03, Alain Sepeda <alain.sep...@gmail.com> wrote: > >> from discussion here I got the feeling that at a given minimum size, >> the answer is : Rankine Cycle turbine, maybe Organic Rankine. >> however the minimum size is not clear... >> maybe car (20-50kW) is possible. >> have to work on turbine, but also radiators, key problem. >> >> for CHP 7-15KW, not sure it can be efficient, but it works. >> >> >> for smaller power, or smaller vehicle (motor bikes, moped, bike >> assist)... maybe no good solution. >> stirling or turbines are too heavy, have low efficiency. >> thermoelectric devices have bad efficiency >> >> for bikeassist less that 100W mecanic , with a battery, in serial hybrid >> configuration, could do the job (to refill in the day/night, and push on >> slope about 200-500W). >> miniaturization will be more important than efficiency. >> for moped you can get 1-2kW... >> for motorbike it can start from few 5kW to above 50kW, but won't be fun >> over 10-20kW unlike today >> >> >> 2012/2/8 Guenter Wildgruber <gwildgru...@ymail.com> >> >>> The next billion dollar question: How to get electricity from say 400°C >>> with minimal cost/maximum efficiency? >>> >> >> >
