We have much better on the same collection surface with a solar concentrator and T of 300 ° C and more, at least that of a nuclear power station, because the sun is without radioactive radiations which destroy everything.
And the direct local heating of a house by simple low T thermal sensor (air or fluid) is greater than 50% !!
So I persist in my simple assessments.
Links should put credible ratings without betraying secrets, which are details that don't work miracles, but since they don't put them, it destroys trust.
For example, a power of 300 megawatts with a yield of 10% (max conceivable if almost perfect and 50 ° C available) requires with the sun giving 1KW / m2 a surface of mini greenhouses (vertical sun in the Sahara) of 3million m2 evening 3Km2 of greenhouses and 3 to 4 times less with concentrators giving a much better yield or roof surfaces of houses with local solar heating.
On his site, L. Michaud seems to want to control a large cyclone or large perpetual tornado without greenhouse sensors, with a hot lake around, which replaces the greenhouses as sensor (in my opinion impossible without hot lake).
The collection surface is also the same and the unclear problem is the continuous maintenance of the arrival of this hot air which is highly likely to not last, as shown by tornadoes and cyclones which move to maintain their heat source hot which disappears once cooled (very unpredictably).
Greenhouses allow better control of the stability of hot air.
L. Michaud writes:
http://vortexengine.ca/sommaire.shtml
The work-heat efficiency is around 15% because the heat is received at an average temperature of +15 ° C and transferred at an average temperature of -15 ° C
whereas the maximum Carnot yield (never achieved) is under these conditions:
(15 + 15) / (273 + 15) = 0,1 = 10% and not at all 15% and the yield actually achieved is probably a third or 3%, after losses and imperfections !!
So L. Michaud is very very optimistic by a factor of 5 !!
On his 4m vortex demonstration video, L. Michaud obtains an unstable vortex, much less than a real tornado.
Tornadoes do not form from the ground, but by descending from the clouds with auxiliary vortices on the sides which stabilize them in a very complex way (reports on Arte) and therefore I remain very skeptical, for an operation, amounting to 10 times the height of the chimney, much better than that of a chimney swirl shown on the video.
Whereas the local heating of houses by simple thermal sensors with air or water has an efficiency which exceeds 50%!
Ask cuicui 88 with its roof to redo become a solar collector cheaper than the roof in the Vosges, not hot.
http://www.apper-solaire.org/Pages/Expe ... 20toiture/
It seems coherent to save a maximum of energy which is used to heat in a decentralized way, instead of making large power stations to supply the electricity which is used to heat and losing 2/3 or even more in these conversions.
, no, of course !
