Renewables-2017

New kind of catalyst. December 22, 2025 New kind of catalyst is an exothermic reversible reaction being combined with another reaction in joint chemical process, to make it happen at designed conditions and to restore the said reversible reaction's reactants For example, it can be thermochemical water splitting in hydrogen and oxigen. (a) CO + H2O = CO2 + H2 - 41 kJ. It is exothermic reversible reaction being classicsl one. dH = - 41 kJ, dS = - 34 J/mol*K. T 2000 C, while conventional thermal water spliting needs much hither temperature. Here CO2 and CO are circular and practically free, so a cost of H2 is a cost of energy consumed. Heat can be renewable energy and 0.4 US cents/kWh [1], and heat in electricity can be 30% energy efficiency and 3.0 US cents /kWh tariff for sale. So the hydrogen cost is here by (0.33 * 242 kJ + 41) * 1000 * 0.004 / 3.6 - 41 * 1000 * 0.3 * 0.03 / 3.6 = USD 30 for 0.66 ton H2 product, so 30 / 0.66 - USD 45 /ton H2, Opex, vs. the water electrolysis 286 ...

A real way to energy independency. Novel technology. Corrected. 19/12/2025. December 09, 2025 December 09, 2025 December 08, 2025. Announce. Breaking of all stereotypes. Hydrogen (H2) being a predecessor in chemistry and in artificial fuels production in particular, from air and water domestically and distribute guarantees energy independency. USD 46/ton H2 = USD 6/ton NH3 = USD 2.4/bbloe , all by the Opex. Super cheaply, zero-carbon, circular, compact, scalable. (1) CO + H2O = CO2 + H2 - 41 kJ, exothermic reaction is used here as 'enveloping catalyst' for thermal water splitting (see reaction (2)). Formic acid - CO2H2, as intermidiator of process (1) allows its soft conditions. The by-product of reaction (1) is heat in electricity for sale, being 41 kJ * 2.5 = USD 103 /Mmol. (2) (CO2 + H2) + m H2O = m H2 + m/2 O2 + (CO + H20). At m = 0.33, a cost of H2-product is USD 46 / ton. H2 cost = total energy consumed. Really, because here the CO2 and CO are circular and practically fre...

Novel zero-carbon technology to produce electricity by circular chemistry. December 14, 2025 Novel zero-carbon technology to produce electricity by circular chemistry. David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbasrovski@gmail.com (1) CO + H2O = CO2 + H2, dH = 110 + 242 - 393 = - 41, dS = 213 + 131 - 198 - 180 = -34 J/mol*K, dG = -41 kJ + 34 * T 73,000 / 249 = 20 C. If Q means a cost, USD, Q (Mmol heat of reaction (3) = 73 MJ * 4 / 3600 = USD 88 /MWh, consumed to produce electricity from the heat of exothermic reactions (1) + (2) for sale by USD 180, supposed here at 30% energy efficiecy and 3.3 cent as tariff. References. [1] Breakthrough cheap Re energy, judbarovski.blogspot.com/2024/06, posted on June 21. 2024. [2] Cheap energy production and delivery- AIChE-2017 annual conference, judbarovski.blogspot.com/2025/09, posted on Sept. 18, 2025. [3] CV-2023, davidjud.blogspot.com/2023/04, posted on April 27, 2023. . , Comments

I looked through your profile. Can I join you and your team as a volunteer? I and my long of more than 60 years rich interdisciplinary experience and results can be very helpful for you and your career. For example, you can see my some recent results and CV. Title. Greenhouse for the water desalination. Simply, compact, cheaply. Sincerely, David Judbarovski, systems engineering, principle inventor, retired. judbarovski.blogspot.com, judbarovski@gmail.com Abstract. Greenhouse has two or three roofs. Input water is evaporated inside the said greenhouse by sun light at daytimes and condensed at nights by cold ambient air out of greenhouse. Periodicly at nights, greenhouse is cleaned and repeat, if needed. For example For israel conditions, destributed 1000 km2 (2.5 m3 /m2 in a year, 2.5 milliards m3 totally) is enough for all water consume by about 40 US cents/ m3 [1] CV-2023, judbarovski.blogspot.com/2023/04, posted on Apr. 27, 2023 [2] A real way to energy independency. Novel technology...

December 11, 2025 Dear Ms. Professor Dorith Tavor. I looked through your profile. Can I join you and your team as a volunteer. I and my long of more than 60 years and rich interdisciplinary expertise and results can be very helpful for you and your career. For example, you can see my recent results and CV. [1] NH3. Advances in operations, maintenance and reliability, judbarovsvski.blogspot.com/2025/12, posted on December 08, 2025. [2] Ammonia water advantages for energy transition and hydrogen fueling, judbarovski.blogspot.com/2025/11, posted on November 22, 2025. [3] Breakthrough cheap Re energy, judbarovski.blogspot.com/2024/06, posted on June 21. 2024. [4] Cheap energy production and delivery- AIChE-2017 annual conference, judbarovski.blogspot.com/2025/09, posted on Sept. 18, 2025. [5] CV-2023, davidjud.blogspot.com/2023/04, posted on April 27, 2023. [6] A real way to energy independency. Novel technology, judbarovski.blogspot.com/2025/12, posted on December 09, 2025.

December 09, 2025 December 08, 2025. Announce. Breaking of all stereotypes. Hydrogen (H2) being a predecessor in chemistry and in artificial fuels production in particular, from air and water domestically and distribute guarantees energy independency. USD 34/ton H2 = USD 6/ton NH3 = USD 2.4/bbloe , all by the Opex. Super cheaply, zero-carbon, circular, compact, scalable. (1) CO + H2O = CO2 + H2 - 41 kJ, exothermic reaction is used here as 'enveloping catalyst' for thermal water splitting (see reaction (2)). Formic acid - CO2H2, as intermidiator of process (1) allows its soft conditions. The by-product of reaction (1) is heat in electricity for sale, being 41 kJ * 2.5 = USD 103 /Mmol. (2) (CO2 + H2) + m H2O = m H2 + m/2 O2 + (CO + H20). At m = 0.33, a cost of H2-product is USD 34 / ton. H2 cost = total energy consumed. Really, because here the CO2 and CO are circular and practically free, and total energy consumed is 0.33 * 242 + 41 * 1.1 - 41 * 2.5 = USD 22.5 for 0.33 * 2 = 0....