Renewables-2017

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 helicoptrrs. Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com. Abstract. It is a transport 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 delivery or at refueling stations. References: [1] Take-off and landing Device, judbarovski.blogspot.com/2020/07, posted on 20.07.2020. [2] It can change a game for satellites. judbarovski.blogspot.com/2025/06, posted on 13.06.2025. [3] CV-2023, davidjud.blogspot.com/2023/04, posted on 27.04.2023.

. Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski@gmail.com, judbarovski.blogspot.com. It doesn't need a special start/land pods, but only permitted by ordinary air traffic safety regulation. Abstract. A key element of the possible invention is a VTOl and strategy can lift and land a satellite or/and materials relatively free if the VTOL design of my invention of 40 kW/ton, see Vertical take-off amd Landing Device - 20.07.2020, see judbarovski.blogspot.com/2020/07, posted on July 20, 2020. Satellite is served on low orbits, its PV direct solar illumination can be 10 hr.* 1.4 kW * 365 days a year = 5000 kWh/m2 of the PV receiver. Down to 10 km usiрng ICE, expenses are negligible, then and lower than designed orbit it is CH2 + pressed oxigen for jet mover, and then accelerated. For example, if 100 ton satellite, to reach an orbit 300 km hight it consumes 2 hours and about 1.6 ton kerosene and 4.5 ton 300 atm. pressed oxigen by a tot...

  Dear Dr. Geraldo Herrera--Garcia,  Dear Dr. Avinoam Rabinovich. Date:  04 June, 2025 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  ,

Rehab of solar thermal power stations. Here being about 0.5 cent per kWh electricity Author: David Judbarovski, systems engineering, principle inventor. retired.  judbarovski.blogspot.com, judbarovski@gmail.com  Abstract  Small heating units  are unusual and  c omprises three thin sheet mirrors each. Planar one redirects solar flux onto motionless solar concentrator about 1 m2 with motionless focal spot, and father third tiny mirror in the focal spot redirects on motionless tube with heat carrier at the end with two tanks' known high temperature heat storage system. Such small heating units can be about USD 25 / m2 each and 5 years payback and serves to convert the heat into artificial fuels. 500 cent /( 2500 * 0.4) = 0.5 cent /kWh electricity. Q.E.D.