Renewables-2017

Extremely quick & cheap transportation Author: David Judbarovski, judbarovski@gmail.com Linkedin.com It is not a ground effect vehicle, but much better. A key element of my ship is to add the thin water steam cocoon created by electric heating a hull of the ship. It flows slightly lower than sea level, and the ship’s nose is tilted and forcing the upstream water to be thrown upward in the air, forming a surface wave along both sides of the ship route. It is new kind of sea ship, breaking all stereotypes. If ship is L * B * H = 100 m * 10 m * 6 m = 6000 m3 = 6,000 ton displacement, the outer surface S = 2 * (6 +10)   * 100 = 3200 m2, steam cocoon is created by power of Wsc = 5000 W/(m2 * K) * 3200 m2 * 10 K = 160,000 kW, speed of v = 900 km/h = 250 m/s, t = ((6 m/ tan 15) = 22.4 m) / 250 = 0.09 sec, and Wp =  9.81 *  (6 m / 2) * (22.4 * 10 * 6 m3) /0.09 = 441,000 kW / 0.85 = 520,000 kW, here 0.85 is a mover efficiency, and totally W = 520,000 + 160,0...

New kind of public transport for suburb and province Author: David Judbarovski, judbarovski@gmail.com Linkedin.com New kind of public transport uses small land units (LU) being very simplified small cars can be electric vehicles, can be jointed in a sort of a train (TLU) as at a station, as on their traffic on main roads. Moreover, the said trains can be jointed in a super-trains (STLU), if being peak times, when a lot of passengers, while a gap between such super-trains is no more than if being for individual LU-s. The said transport can substitute railway transport because it can provide much better service, but needs a special way configuration, will be disclosed here too and can provide extremely high capacity with extremely cheap O & M vs. railway transportation, can be used for cargo trains only as a last monster of passing age. Really, my kind of public transportation can provide (1) A wait time at the station, is practically a zero        ...

Cheap and simple method to prevent traffic-jams on province roads Author: David Judbarovski, Israel, judbarovski@gmail.com See CV in Linkedin.com (David Judbarovski) My method was developed for Israel, but can be applied for other countries with analogous problems. Nevertheless, I’m sure that it is a problem of private cars ownership now can’t satisfy present and future progressive transportation paradigm. I have my own understanding of that problem and very economical decisions of it as for cities as for province, isn’t needed in province roads at all, and their costly managing Every working days, when a mass of cars owners go from their province settlements to cities and when go back to home, we can see terrible traffic-jams on the roads   destroying nerves and normal living of the said people. If being a problem of twice a day only, it is can’t be solved by traditional ways of grade separation, because its cost can contradict its very low capacity, while at gra...

Urgent problem of small vehicles on roads and its weakening  Author: David Judbarovski, systems engineering, principle inventor, retired Lincedin, https://judbarovski.blogspot.com, Facebook   I saw, that it would be an urgent problem, jet many years ago, when such means of transport were very exotic, and mainly being small cars.   The a madman only or a suicide try to travel with big velocity by small transport on the road, but now it turns in real epidemic being very dangerous for all on the roads including pedestrians.   Now any driver is sore suffering by that problem on the road, but municipality and police are starting to extinguish the fire at a tree no sooner than all forest is burning. Yes, it needs many bans and penalties, but not full ban, and I see here one problem only, and it is a small cars with their small velocity breaking high-speed movement for the others. The small cars can be for special places or/and for invalids only. For elec...

One of my numerous technologies for incredible cheap H2 and power Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Last articles: https://judbarovski.blogspot.com , since 2017 http://judbarovski.livejournal.com , archived since 2006 It is a chemical cycle for electricity and hydrogen production. (1) KNO3 = (thermolysis above 400 C) = KNO2   + ½ O2 – 124 kJ/mol     : (2) KNO2 solution in the water + ½ O2 = electrochemically = KNO3 + 124 kJ/mol electricity + water separated. The both processes and totally too are highest energy effective near 100 % using a heat of near 400 C!!! Certainly, if supposing 80 % effectiveness for electrochemistry. An ordinary chemical engineer can evaluate such technology and its economics as 341.0 kWh electricity production per a ton of KNO3, using 427.0 KWh heat, and KNO2 and O2 in a cycle too,...