Ise päiksest ja tuulest elektrit tootev ja veest vesinikku tootev laev vesinikutanklat ei vaja.

• Ise päiksest ja tuulest elektrit tootev ja veest vesinikku tootev laev  vesinikutanklat ei vaja.

https://majandus24.postimees.ee/6706245/milline-on-ootamatult-tallinna-vaisav-maailma-esimene-vesinikkutusel-laev?_ga

Päikese- ja tuuleenergiat kasutatakse vesiniku tootmiseks (s.o. veest vesiniku eraldamine elektri abil millega saab hakkama iga koolilaps

https://www.instructables.com/id/Dry-Cell-Electrolyser/

https://m.youtube.com/watch?v=5DJDKYXmIWM&feature=related ),

vesinikust omakorda tehakse kütuseelemendis
https://en.m.wikipedia.org/wiki/Fuel_cellular
energiat(elektrienergiat), mida vajavad laeva jõuseadmed (elektrimootorid)või pardatehnika. Seni on Energy Observer oma peatuste ajal 1496 töötunni jooksul tootnud kokku 488 kg vesinikku. Energiavajadusest (elektrivoolu)merel annab vesinik(mereveest eraldatud vesinik) kuni 60%, ülejäänu(elekter) saadakse päikeseenergiast ja tuulest. Vesinikkütuseelementi on 48-protsendilise efektiivsusega kasutatud keskmiselt 6 tundi iga 24-tunnise navigatsiooniperioodi jooksul. Sellest on selgunud vesiniku eelised: võrdse kaalu puhul saab energiat vesinikku salvestada 7,3 korda rohkem kui akudesse(s.o. vesiniku kütuseelement on peaaegu sama mis aku kuid toodab elektrit).


Hydrogen fuel
From Wikipedia, the free encyclopedia
Hydrogen fuel is a zero-emission fuel when burned with oxygen. It can be used in electrochemical cells or internal combustion engines to power vehicles or electric devices. It is starting to be used in commercial fuel cell vehicles such as passenger cars, and has been used in fuel cell buses for many years. It is also used as a fuel for the propulsion of spacecraft.

Hydrogen is found in the first group and first period in the periodic table, i.e. it is the first element on the periodic table, making it the lightest element. Since hydrogen gas is so light, it rises in the atmosphere and is therefore rarely found in its pure form, H2.[1] In a flame of pure hydrogen gas, burning in air, the hydrogen (H2) reacts with oxygen (O2) to form water (H2O) and releases energy.

2H2(g) + O2(g) → 2H2O(g) + energy
If carried out in atmospheric air instead of pure oxygen, as is usually the case, hydrogen combustion may yield small amounts of nitrogen oxides, along with the water vapor.

The energy released enables hydrogen to act as a fuel. In an electrochemical cell, that energy can be used with relatively high efficiency. If it simply is used for heat, the usual thermodynamics limits on the thermal efficiency apply.

Hydrogen is usually considered an energy carrier, like electricity, as it must be produced from a primary energy source such as solar energy, biomass, electricity (e.g. in the form of solar PV or via wind turbines), or hydrocarbons such as natural gas or coal.[2] Conventional hydrogen production using natural gas induces significant environmental impacts; as with the use of any hydrocarbon, carbon dioxide is emitted.[3]