Renewables-2017

Germany can reject Russian gas hurt-free for itself Memorandum by David Judbarovski, systems engineering 24.02.2022 Abstract Import of natural gas and crude oil now extremely overpriced, and balanced to prevent either substitution or industrial conversion one to another for cheapening, but can be made without any hurt and problem, if political demand. Now such moment has come. (1) More cheap oil can be converted in gas of mix of propane and butane of 50% /50%^ molar by cracking. More cheap gas can be converted in oil by water vapor reforming followed by Fischer-Tropsch synthesis. The market prices of them are balanced now and prevent cheapening by these ways. (2) Known technologies can save 50% oil consume for energy needs, while the reminded half is free, and easily and compact stored to transform it in practically free gas not needing to be stored. For that purpose, the oil is reformed by water vapor in hydrogen. And the last is converted in electricity by air-hydrogen fu...

Satellite for long near Earth missions Author: David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com, https://judbarovski.blogspot.com, Linkedin Abstract Such missions of satellite can be multiple prolonged by a very compact, and cheap, and energy effective chain of conventional technologies estimated here by economics point of view. It comprises: (1) PV-panel for sun light in electricity, (2) electricity for water splitting in hydrogen and oxygen, (3) jet consumes such H2 and O2 to restore speed big loss on near Earth orbit and operative changes it for such missions’ needs. For example, the water about 2% of satellite’s weight can prolong typical lifetime (1 day to 3 weeks for 200 km altitude, 1 year to 20 years for 400 km) Reference {39}-[7], 12.02.2022

Novel class of Warming window glass (WWG) Author: David Judbarovski, systems engineering. principle inventor Material of the window glass invented and its outer surface are ordinary ones, but its inner surface has roughness of 10 micrometer or so. Such window is transparent for seeing both from inside and from outside, but reflecting the infrared radiation from inside the room. Such window glass can be made while hot rolling, so it is as cheap one as ordinary window glass

Dr. Bryan Hubbell National Programs Director Dr. Suzanne van Drunick Research Program of Safe and Susatinable Water Resources Dr. Bruce Rodan Associate Director For Science epa.gov February 3, 2022 It is abnormal that seafood is more expensive than consume meat. Regards, and for detailed information David Judbarovski, systems engineering, principle inventor, retired judbarovski@gmail.com Israel Seafood via atmospheric CO2 utilization and plenty nutrients Abstract Seafood farming can be distributed on open oceans as closed specialized artificial ecosystems of phytoplankton growing with mineral fertilizers, for feeding of small fishes & shellfishes, they feed a valuable fish being a commercial end product of extremely low cost. Such farms are well standardized and scalable. . 200 million ton valuable seafood annually needs about 45,000 km2 oceans’ area (0.013 %). We can deploy such farms in any place with not severe winds and with optimal high temperatures. Nei...

Breakthrough fuel for sea transport. Author: David Judbarovski, systems engineering, principle inventor judbarovski@ gmail.com , Linkedin Abstract It is a fuel being (a) powerful like oil in diesel, (b) zero-carbon one like hydrogen, (c) hazard free vs. hazard ammonia, (d) cheap. It is Zn(NH2)2, while its Zn is extremely cheap, because Zn3N2 being intermediate product with very low enthalpy formation/decomposition. (1) 3 Zn(NH2)2 at 200 C is decomposed in Zn3N2 + 4 NH3 (2) NH3 can be used (2a) either by co-firing in old-fashion diesel engine. (2b) or by triple more energy effective the NH3 in electricity by hydrogen-air fuel cell (can be cheap device) after the NH3 decomposition (3) Either on-board, or outside Zn3N2 is decomposed in 3 Zn + N2 consuming 22.6 kJ / mol Zn3N2 = 32 kWh/ton Zn, being a heat preferable in a form of electricity with a help of tiny share of 4NH3. .

Breakthrough zero-carbon fuel Author: David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com , https://judbarovski.blogspot.com , Linkedin Abstract CO(NH2)2 (urea) + H2O (vapor at 150-200 Celsius) = CO2 + 2 NH3 – 120kJ 2 NH3 = N2 + 3 H2 – 92 kJ 3 H2 + air = (fuel cell) = 3 H2O + 858 kJ Totally: urea + water vapor + air = 0.75 * (858 – 120 - 92) /60 = 8.1 kJ /gram of urea = 2.24 kWh electricity/kg = 2240 kWh / ton (urea) Notes: (1) Urea is zero-carbon fuel, because it uses CO2 in cycle of production –to- use (2) Urea is stable in storing and quite non-hazard vs. hydrogen and ammonia for powering being very hazard, so unrealistic ones. (3) Urea can be produced very cheaply consuming the air and water and clean renewable energy, but disclosing such technologies is above the format of short article. (4) Now the urea are extremely overpriced in COVID-crisis period (5) IMO (International Maritime Organization) is toughening limits on harmful exhau...

Halving of the oil consume by the world Author: David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com , Linkedin,. https://judbarovski.blogspot.com Abstract (1) CH2 (oil) + 2 H2O = CO2 + 3H2 - 214 kJ heat, compensated by (2) 0.23 * (CH2 + air = CO2 + H2O + 930 kJ ), here 0.23 = 214/930 (3) 3 H2 + air = Fuel cell (FC) = 3 H2O + 858 kJ Totally: 1.23 CH2 + air = 1.23 CO2 + 1.23 H2O If FC energy efficiency being75%, and 28% for best ICE , so 75 / 1.23 / 28 = 2.18, Q.E.D. !!! Moreover, we can halve a cost of petrol vs. its present cost (see article “Petrol cheapening”, https://judbarovski.blogspot.com/2021/01 , was posted on January 12, 2021 )