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 https://www.aiche.org/conferences/international-congress-on-sustainability-science-engineering-icosse/2023/proceeding/paper/novel-ev-its-estimations-comporison

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Progressive city-car realization and powering-Updated,#1

Progressive city-car realization and powering-Updated, #1 Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Archive since 2017 yr: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com [3791]-3/11/2017,   My three levels’ conception of progressive transportation was disclosed in http://www.judbarovski.blogspot.co.il/2017/05/progressive-transportation-manifesto.html  (Progressive transportation manifesto, May 02. 2017). Its first level is a city-car.   Special designed city-car is a car moved electrically and equipped by very small battery as a city-grid element, and it isn’t big news now. Such cars are to be much cheaper and simpler than conventional cars and save a lot of energy. But I can suppose strictly to reject all sorts of powering them from underground, because it is energy ineffective and ...
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Green and cheap H2, CO, and hydrocarbons. July 14. 2025

Green and cheap H2, CO, and hydrocarbons. Corrected on August 04, 2025. Author: David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com. Abstract Simplified technology promises USD 161/ton H2, USD 11.5 /ton CO, and hydrocarbons of USD 6 /bbl. They are OPEX, and in order of magnitude cheapеr than prices of fossil fuel and can use now existing infrastructure. (a) CO2 [1] + H2 = CO + H20 - 3 kJ negligible. Here everywhere CO2 is circular and free. A cost of H2O is negligible. If Q served for a cost, Q(CO) * 28 = Q(H) * 2, so Q(CO) = Q(H) / 14. (b) [2] CO + 1.5 H2O = CO2 + 1.5 H2 + 0.25 O2 + 146 kJ. 146 kJ = 146 * 4/ 3.6 [3], [4] = USD 161.0 /Mmol. 1.5 * 2 * Q(H) - 161 = Q(CO) * 28 = 2 Q(H). So Q(H) = USD 161 / ton H2. and CO = Q(H)/14 = USD 11.5 /ton CO. QED ! CO2 + 3 H2 = CH2 (hydrocarbons) + 2 H2O - 240 kJ. 240,000 * 0.3 (efficiency heat in electricity) * 0.03 (tariff) / 3.6 = USD 600 /Mmol So 14 * Q(CH2) = 5 * ...
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Tremendously cheap and green ammonia. - Upgraded.

Tremendously cheap and green ammonia can change a game - Upgraded. David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com. Abstract. Chain of improvements: (1) Re energy by UScents 0.4 /kWh, 5 years payback and breeding investments for acceleration. [1], [2].[3] (2) Reduction in size of the generators' units. Small size = "thin walls" drastically diminish ratio a cost of kWh. (3) N2 is practically free, "share of NH3 burns oxygen out of the air" vs. conventional cryogenic monster. [4]. (4) H2 can be down to USD 150 /ton. [1]. 0.5 N2 + 1.5 H2 = NH3 - 46 kJ, Haber-Bosch process. 46,000 * 0.3 (efficiency heat in electricity) * 0.03(tariffs) / 3.6 = USD 115/Mmol heat in electricity. Q(NH3) * 17 = Q(1.5 H2) = 3 * 150 - 115 = 335, so Q(NH3) = 335 / 17 = USD 20 /ton NH3 vs. now prices being USD 650 -850 /ton NH3. If + 250% for Capex, NH3 would be USD 50 / ton. Such cheap ammonia allows to synthetise...
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