Renewables-2017

Extremely quick & cheap transportation Author: David Judbarovski, judbarovski@gmail.com Linkedin.com It is not a ground effect vehicle, but much better. One of key elements 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 + 160,000 = 680,0...

New kind of land traffic instead of rail one Author: David Judbarovski, Linkedin.com, judbarovski@gmail.com It is mainly a passenger traffic being provided by small high-speed pilotless air cushion vehicles (being a small capsule of one-two seats, can be jointed if being needed in something of train as at the station as on the road) traveling on a net of intercity roads, is cheaper and simpler built than ordinary dirt roads. You don’t wait at the station, but starting at the stations immediately. It is much safer and much more convenient than trains or cars. Its ticket price is practically negligible per one travel, especially if the said vehicles are electrical ones fed on the road, when traveling. Its road junctions can allow uninterrupted traffic analogously as it was described by me earlier (see https://judbarovski.blogspot.com/2018/10/ , in an article “Method to prevent traffic-jams on province roads”, October 20, 2018).  If being on-line optimized totally, the sy...

It had been submitted for South Korea conference   in 2013 Abundant & inexhaustible source being hydrocarbons from air, water and sunshine, and used to produce eco-friendly & extremely cheap & high-quality meat products Author David Judbarovski, pensioner, retired engineer, person for contact; postal address: str. Giborei Sinai 30/23, Akko, 24307, Israel ; email: judbarovski@gmail.com ; telephone number: 972-4-9811080 Executive Summery Present scientists and process engineers are concerned by a problem of eco-friendly & not expensive and satisfactory alternative to fossil hydrocarbons being now as a blood for our life and economics. Huge mass of agriculture products is devoured as a biomass for the alternative fuels production, and this entail serious rise of food prices, foods’ deficit in the world, and soil depletion.   Here I intend to look at the problem from reverse side, and to prove that present science and technologies are ready, ...

Method of breakthrough improvement of solar thermal plants Author: David Judbarovski, judbarovski@gmail.com Linkedin.com Background Conventional solar thermal power plant can comprise a field of heliostats (i.e. large planar mirrors equipped by sophisticated tracing system being principle different each to others) and very high and expensive tower and a tank on its top. The said heliostats redirect solar beams on the said tank and heating the said tank content. Because solar irradiation being very variable, ordinary we need to store solar energy to release if in low irradiation and in sunless periods, and for such purpose a melted salt is used by special two tanks system.   The larger heliostat, the more expensive of each squire meter proportionally to its linear dimensions to resist wind loads and to own weight, but correspondingly the control system sufficiently to be simpler and cheaper. So about 100 m2 area of each heliostat with USD 100.0/m2 was as a compromise ...

How to break Carnot rule for heat engine? Author: David Judbarovski, judbarovski@gmail.com Linkedin Let consider a electrochemical cell producing electricity, and the said cell recycling by heat Being summarized: our Zn-battery with NH4OH –electrolyte produces 2.45 kWh/kg Zn + 1.22 kWh/kg Zn consuming H2 as a byproduct of the said Zn-battery, so totally it is about 3.7 kWh electricity. Then we recycle the said Zn(OH)2 and NH3 being two other products of the said electrochemistry in Zn and in NH4OH correspondingly, by consuming 2.15 kWh low temperature heat for dissolving the said NH3 in the water, and another 1.53 kWh heat of coal burning in the air for recycling Zn from Zn(OH)2, so totally the same about 3.7 kWh energy, but being the heat. Certainly, they are theoretical values, but being obvious way to break Carnot rule for heat engine: here we uses the heat to produce electricity with energy efficiency near 100% as ECG         Really, my bat...

Modified Leclanché cell’s power system Author: David Judbarovski, judbarovski@gmail.com Linkedin My present conceptual invention is a new look on power generation. Here just below I disclose such systems. It generates electricity by USD 0.01/kWh (CAPAX + OPEX), with CO2 exhaust of 0.23 kg/kWh vs. USD 0.09 and 1.0 kg CO2 for coal TPP, or USD 0.09 and 0.46 kg for NG TPP correspondingly, if USD 80.0/ton coal and if domestic USD 100.0/1000 m3 NG. Energy efficiency of electrochemistry was supposed as 70% and for TPP as 40%. The Leclanché cell is a battery invented and patented by the French engineer Georges Leclanché in 1866. I slightly modified his cell to turn the big problem of his ECG for the earliest age of electrochemistry into pretty advantage for our present level of technologies. Mr. Georges had developed a special technological trick being a usage of composite electrode containing manganese oxide for his Zn-battery to avoid its hydrogen being a byproduct of his ba...

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...