To kolbacict.
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Good question! The answer is simple however. Please look at the two links below.
https://en.wikipedia.org/wiki/Electrolysis_of_water
https://en.wikipedia.org/wiki/Heat_pump
The above two links answer clearly your question.

To kolbacict and to all other members of this forum, who are interested in the topic.
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Please look at the following five links below.
https://en.wikipedia.org/wiki/Electrical_conductor
https://en.wikipedia.org/wiki/Kilowatt-hour
https://en.wikipedia.org/wiki/Joule
https://simple.wikipedia.org/wiki/Joule%27s_laws
https://www.homerenergy.com/products/pro/docs/latest/electrolyzer_efficiency.html
The first link explains what is a conductor.
The second link explains what is a kilowhatt-hour (kWh).
The third link explains what is a Joule (J).
The fourth link gives the first Joule's law definition.
The fifth link gives some experimental data, that is, the electric energy, consumed by a standard hydrogen generator and the heat, generated by the released hydrogen, if the latter is burned/exploded. According to this fifth link a standard industrial water-splitting electrolyzer consumes 50 kWh of electric energy in order to produce 1kg of hydrogen. And if this 1 kg of hydrogen is burned/exploded, then the generated heat is 39.4 kWh, respectively.
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Please read very, very carefully the texts in the above links and understand very well what they are explaining exactly. And just then proceed to the text below.
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1) Let us assume that the first Joule's law is correct. Therefore 50 kWh of electric energy transforms entirely into 50 kWh of Joule's heat and in addition 1 kg of hydrogen is released, which if burned/exploded, generates 39.4 kWh of heat. So it is evident that the inlet energy is 50 kWh and the outlet energy is
50 kWh +39.4 kWh and we can write the inequality 50 kWh < 50 kWh + 39.4 kWh, that is, efficiency > 1. This is a technology breakthrough revolution 1.
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2) Let us assume that the law of conservation of energy is correct. In this case we have to write down the equality 50 kWh = 10.6 kWh + 39.4 kWh, where
10.6 kWh is the generated Joule's heat. It is evident that 50 kWh > 10.6 kWh and therefore the first Joule's law is not correct. This is a technology breakthrough revolution 2.
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3) Let us assume that the generated Joule's heat is smaller than 10.6 kWh. In this case both the law of conservation of energy and the first Joule's law are not correct. This is a technology breakthrough revolution 3.
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4) Let us assume that the generated Joule's heat is bigger than 10.6 kWh but smaller than 50 kWh. In this case both the law of conservation of energy and the first Joule's law are not correct. This is a technology breakthrough revolution 4.
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5) Let us assume that the generated Joule's heat is bigger than 50 kWh. In this case both the law of conservation of energy and the first Joule's law are not correct. This is a technology breakthrough revolution 5.
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6) In one word, it doesn't matter what will be your experimental results, related to the measurements of the generated Joule's heat. In any case you will have either
(a) a technology breakthrough revolution 1 or (b) a technology breakthrough revolution 2 or (c) a technology breakthrough revolution 3 or (d) a technology breakthrough revolution 4 or (e) a technology breakthrough revolution 5.
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(Note. In your calculations you can replace kWh with J (1 kWh = 3 600 000 J), but the facts will remain the same.)
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7) Actually the experimental data are available (supposed to be guaranteed by the hydrogen generators' manufacturers) and it is only necessary to look at these experimental data and draw the related simple conclusions.
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Everything seems to be correct, doesn't it?
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Looking forward to your answer.
George

Quote from: kolbacict on June 14, 2020, 12:55:26 PM
electrolysis under pressure?

Pressure is necessary for Electrolysis to occur.
At 0 Atm, and at (-) pressures, the process fails.
Mainly due to a great variation between water pressure and electric pressure. (tension)


This is different from atmospheric dispersion - where in water vapor is electrolyzed at 1ATM


Most electrolysis takes place at ~ 1 ATM out of convenience
And while there is little hard data on the subject, increases in pressure as well as sealed vessels
present some anomalies in energy measurements when changes in internal pressure exist.


To put it short and frank, it is possible to 'gain' energy values proportional to the liquid-gas phase change pressure difference.

Don't you believe in Stanley Meer's technology?

George


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