David Judbarovski, systems engineering, principle inventor. Judbarovski.blogspot.com, judbarovski@gmail.com. Notes. (1) Solar and Wind energy can be cheapened down to $ 0.01/kWh and even much less. [1]. (2) Roadmap to cheap and green hydrocarbon fues. (3) Supercheap and clean hydroens' production down to $ 15/ton alkanes ($2.1/bbl). [2]. Absract. Ethylene OPEX cost can be $75/ton C2H2 vs. more than $1000/ton ethylene. How it works: It is a two-steps chemical process. (1) CH2 (it is abbreviation of Alkanes) + H2O = CO + 2H2, dH =162 kJ/mol, dS = 250 J/mol * K, T > 220 C. CO = $ 31/ton.
(2) 2CO + 3H2 = C2H2 + 2H2O.
Ship powered by sun PV-cells
Ship powered by sun PV-cells Author: David Judbarovski, systems engineering, Israel, retired engineer judbarovski@gmail.com , Linkedin: David Judbarovski A real ship of 165,000 ton tonnage with optimal power of 37.000 kW would need about 37,000 * (8000 /1600) / 0.2 ~= 1.0 million m2 PV-cells = 1000 m * 1000 m, can be towed by light foldable sectioned construction being unfolded in open sea and folded before entrance to a port. Now, such towed solar power plant is no more than 100.0 million USD, while the said ship total cost is 185 million USD. Certainly, we have to consider a costly power storage and three days = 72 hours storage can be quite enough, while I can recommend to use Li-H fuel cells can be as a power source for the ship. A total weight of the said fuel cells is negligible vs. the ship tonnage, while the fuel (Li and H2) of such Li-H fuel cells can be thermally recycled without any interrupting of its work by Joule heat of the said PV-cells’ electricity. ...
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