asteroza + tandem   15

Tandem PV
Trying to commercialize low cost tandem dual junction PV solar cells?
tandem  dual  junction  cola  cell  PV  power  generator  materials  science  research  technology 
october 2018 by asteroza
Solar photothermochemical alkane reverse combustion
So high light/pressure/temperature reactor with TiO2 catalyst does a one step conversion of water and CO2 to liquid hydrocarbons.
liquid  hydrocarbon  synfuel  production  photothermochemical  tandem  photochemical  thermochemical  photocatalytic  photocatalyst  alkane  reverse  combustion  UV  light  heat  pressure  titanium  dioxoide  catalyst  water  CO2  cracking  materials  science  research  technology  solar  synthetic  fuel  Delicious 
february 2016 by asteroza
Moment Cancelling Engine | Dan Gurney's All American Racers
Interesting tandem twin motorcycle engine that in theory cancels crankshaft vibration, but while a 4 stroke it sends both pistons down at the same time, so wouldn't there be hammerblow type vertical vibration? The patent covers an intake optimization trick that may be the more applicable innovation.
momentum  vibration  cancelling  tandem  twin  4  stroke  piston  motorcycle  engine  ICE  research  technology  propulsion  transportation  Delicious 
september 2015 by asteroza
Interesting tandem bike intended to have a young rider up front and an adult in the aft position, hence "hugging" the forward rider
tandem  bike  bicycle  human  powered  vehicle  transportation  hardware  europe  italy  Delicious 
february 2014 by asteroza
Toxy Liegerad GmbH - TRIMOBIL - TRIMOBIL - Fahrgemeinschaft-3.0
Weird trike layout where the left rear is occupied by the second rider providing propulsion to the rear axle, while the center forward rider provides propulsion directly via the front wheel. Leaves a L shaped cargo area along the right side, which can be fitted with a third adult seat for a non-pedaling passenger, a general cargo space, or an area to mount multiple child seats.
offset  tandem  trike  tricycle  cargo  human  powered  transportation  vehicle  Delicious 
september 2011 by asteroza
[JSAP] Optical Fiber Turns Into Solar Cell -- Tech-On!
Interesting hybrid cascade/tandem solar cell architecture using fiber optics. The trick is to catch light bouncing in the fiber by dye sensitized solar cells mounted as a concentric cladding around the fiber. To get higher efficiency, have one band of cells of a length sufficient to cat most pounced light in a single pass, then have another band farther down the fiber optimized for a different wavelength for the second pass. You would have multiple bands from front to back with short wavelength stuff up front. Interesting that these guys are gunning for the near-infrared, as they use bounced light which doesn't suffer from transmittance problems encountered in transparent electrode TCO dye sensitized tandem cells which must pass through the first layer to reach lower layer cells.
fiber  solar  cell  dye  sensitized  tandem  cascade  incident  light  bounce  visible  near-infrared  TCO  transparent  electrode  Delicious 
february 2010 by asteroza

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