Renewables-2023

June 25, 2025 Three steps breakthrough cheapening H2, and CO and hydrocarbons (CH2) - Upgraded Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com. Abstract. Non usual simple way allows from air and water to synthesize hydrocarbons fuels (CH2 abbreviated) being green and cheap and well scalable and can be distributed as in production as in applications. (A) CO2 + 0.25 O2 + 1.5 H2 = CO + 1.5 H2O + 146 kJ, 146,000 * 0.3 * 0.O3 / 3.6 = USD 365 electricity for sale. (B) CO + 1.5 H2O = C02 + 1.5 H2 + O.25 O2 - 146 kJ, 146 * 4 / 3.6 = USD 160 [1]. CO2 is free, being used in cycle. If H2 Opex being ordinary USD 400 / ton H2 at start way [2], so the 1-st round is CO = (1.5 * 2 * 400 - 365) / 28 = USD 30 /ton CO. H2 = (30 * 28 + 160)/(1.5 * 2) = USD 333/ ton H2. The 2 nd raund is CO = (1.5 * 2 * 333 - 365) / 28 = USD 23 / ton CO, H2 = (23 * 28 + 160) / 3 = USD 268 / ton H2. Round 3 is CO = (3 * 268 - 365) / 28 = USD 15.7 /...

Three steps breakthrough cheapening H2 and CO and hydrocarbons (CH2 abbreviated). Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski@gmail.com, judbarovski.blogspot.com The first step from CO = USD 37 /ton, and H2 = USD 410 /ton. (1a) CO + 2 H2O = CO2 + 2H2 + 0.5 O2 - 289 kJ. 289 * 4 /3.6 = USD 320 [1]. H2 = (37 * 28 + 320) / 4 = USD 339 /ton H2. and CO2 is free. (1b) CO2 + H2 = CO + H2O + 3 kJ negligible. CO = 2 * 339 / 28 = USD 24 / ton CO. The second step. (2a) CO + 2 H2O = CO2 + 2 H2 + 0.5 O2 - USD 320. H2 = (24 * 28 + 320) / 4 = USD 248 / ton H2. (2b) CO2 + H2 = CO + H20 - 3 kJ. CO = 2 * 248 / 28 = USD 18 / ton CO. The third step. (3a) H2 = (18 * 28 + 320) / 4 = USD 206 / ton H2. (3b) CO = 2 * 206 / 28 = USD 15 / ton CO. So CO + 2 H2 = CH2 + H2O, and CH2 = (15 * 28 + 4 * 206) / 14 = 1240 / 14 = USD 88 / ton CH2 = USD 12.4 /bbl

New kind of transport as elite one, as instead of helicopters. Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com. Abstract. It is a trasport of 10 cent/kg can be fixed in the sky motionless by VTOL [1], [2] or fly in any direction, upto 900 km/hr. 2000 km range, 100 kg of bipropellant (kerosene and pressed oxigen) per a ton proportionally. It can be fed by not big solar PV panel or by shuttle delivdery or at refueling stations

Dear Dr. Geraldo Herrera--Garcia, Dear Dr. Avinoam Rabinovich. Tal Aviv under threat of land subsidence can ruin them, because underground water resources exploiting. See One of the threats for the mankind can be prevented,judbarovski.blogspot.com/2022/11, posted on 28 Nov,2022 After geophysical investigation inside and nearby of as actual holes as abandoned ones and wells to them, in a danger we can pump pressed air into the holes to compensate load fully or partly on them from upper sides. For the following, the said air pressure can be controlled by very cheap sensor and small and cheap diaphragm compressor. Sincerely, David Judbarovski, systems engineering, principle inventor. retired. judbarovski.blogspot.com, judbarovski@gmail.com