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Cake day: October 20th, 2023

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  • Presumably superconductors are a given at that level of technology. But also at megastructure scale, we could easily talk about very exotic energy transfer methods. Mirrors, microwave transmission antennas, kilometer wide conduits of highly conductive “ground” material, large scale production of fusion fuel, maybe usable power from heat difference is such an efficient process at any scale that the sphere just has a hot side on the inside (towards the sun) and a cold side on the outside (towards cosmic background) and anyone who needs power just patches in a heat pipe to the inside surface.

    Actually there’s a lot there on that last one. Large efficient power plants could be built anywhere where people needed them hooked with big heat pumps into the inner surface and outer radiator surface, smaller applications could just hook into the inner surface and radiate heat passively and let the climate control deal with it. Rogue energy thieves could be tracked down by scanning for unregistered cold spots on the inner surface.








  • We already do this at every steam based power plant in the world (basically everything but hydro, PV, and wind) and it’s done much more efficiently. Doing this stuff with tiny gadgets on micro generators like ICE vehicles is a pretty inefficient implementation, especially as it adds weight to already heavy vehicles, decreasing efficiency and safety, and increasing tire and brake wear. The only place I can imagine this being useful is very heavy vehicles that for some reason still have to be using diesel like long haul trucks/busses, diesel freight trains etc and the like. And EVEN then you’re looking at major issues with economy. If you increase the weight of a truck by 2 percent to give it a 2% increase in fuel efficiency, you are hurting not helping. 2% comes off of your GCVWR margins and suddenly you need 51 trucks instead of 50 trucks to transport a given load, not only increasing your fuel use by 2% but also increasing vehicle maintenance and tire and brake pollution by 2%

    Edit: I’m not saying relatively miniaturized energy recovery systems don’t have a future, but I’m dubious it’s in transport or handheld devices. At least for the foreseeable future. Infrastructure scale however has always been a major application for energy recovery development, stirling engine, steam turrbine and TE development keeps getting further pushed to eek efficiency out of power stations, power plants, substations, emergency generators, maybe even HVAC systems and other building scale applications.






  • The SSN is supposed to just be a number that you give your employers and the IRS so that your social security (the USs blanket retirement savings/pension system) contributions get logged correctly to you and then when you retire you can use that number to get the social security benefits that you paid into. The number has ended up being used for all sorts of things because the USA is slightly broken because it is SORT OF a unique ID number for each US citizen, except of course that it wasn’t intended to be that, SSNs are only supposed to be used from first social security contribution (first paycheck) to last social security payout (death) so naturally they can just be recycled.