Renewables-2017

Solar precise dish for water splitting. USD 0.25/kgH2 or about 0.12 for southern regions, or 0.5 USA cents/kWh electricity Judbarovski David, retired, systems engineering, principle inventor Linkedin (eng), judbarovski@gmail.com , Israel My personal professional sites: https://judbarovski.blogspot.com , since 2017 and https://judbarovski.livejournal.com , since 2006, archived It is a small dimension system of about 1.0 m2 solar flux, and it comprises (1) precise thin wall planar mirror for redirecting solar beams on (2) precise thin wall dish concentrator, so its focal spot is motionless, (3) tiny motionless PV sensor between (1) and (2) and it can control the redirected solar beams to be parallel to the said dish axis, (4) two axis tracking control by micro servomotors, and (5)   pedestals for the said mirrors (1) and (2), and all of them have to be stable against a wind average velocity. A small vessel supplied by water is placed in the said focal spot at about

Super-cheap Hydrogen produced by Super-cheap Device and Electricity Author: David Judbarovski, systems’ engineering, principle inventor, Israel Linkedin (eng.), Facebook (rus.), judbarobski@gmail.com My professional personal sites: https://judbarovski.blogspot.com since 2017 and https://judbarovski.livejournal.com since 2006, archived There are no technological problems to produce pure hydrogen, is down to USD 0.1/kg, if using my special reactor for thermolysis of pure water, and if using an extremely novel and cheap electric-generator. The said hydrogen can be delivered in its liquefied form, if to any far point of the world, doubling a cost up to USD 0.16-0.2/kg. See the said system disclosure in [1] https://judbarovski.blogspot.com/2018/08/practical-system-for-cheap-energy-for.html , and see the said reactor principle disclosure in [2] https://judbarovski.blogspot.com/2018/03/some-helpful-applications-of-electro.html ). Here just below I intend to show and

More suitable tablet computers design in usage. judbarovski@gmail.com A user keeps in a hand a screen with its all-in-one parts, and keeps it by a removable stick integrated with the screen, while all other parts of the tablet including a power supply battery fully of partly, are integrated with the tablet case, can be wearable. The another part of the power supply can be integrated with the screen. It is much more suitable in usage, because now the user can’t keep a tablet by one hand when use it, and my offer allows the device kept, to be lightened in weight drastically down to 20% or less vs. its present level.    

Evaluation of laser as means against Gaza’s incendiary balloons David Judbarovski, systems engineering, Israel, judbarovski@gmail.com Ideas to collapse of air balloons by a laser beam aren’t new. On first look it seems very attractively in application against sadly famous Gaza’s incendiary balloons (GIB) terrorizing Israeli people and lands near a boundary with Gaza strip last months. It would be very amusing to crush inside the Gaza territory their fire was sent to Israel. But on other hand, it is looked very worrisome, because military lasers after huge milliards dollars investment and some ten years development didn’t give a birth nothing serious except of a weapon of some ten ton with a range about 1 km or so. Moreover, the said GIB-s are transparent and a lion share of the said laser power would go through the balloon isn’t hurt it. Just below I will show my evaluation of the GIB problem           For the happiness, the Gaza strip is 4-7 km width and 40 km le