In principle it is possible to convert CO2 into methane / natural gas. You build a furnace where you extract Carbon and Oxygen, Water and Hydrogen at the same time. Each CO2 molecule needs two H2O molecules.

CO₂ + 2 x H₂O --> CH₄ + O₂ + 2O

In order to get 2O into O₂ you should not need anything special. Free oxygen atom always automatically searches a companion to itself.

The methane facility is much like combustion engine. You feed Carbon Dioxide and Water vapors into closed chamber. Then you use spark plug like system for splitting the molecules into atoms. Chamber must be pressurized for keeping the atoms close to each other.

You can get cheap electricity from hydro and vacuum plants.

After chamber you lead the gases into distiller tower. Methane's weight of volume 0.72 kg / m3, Carbon dioxide and monoxide are heavier. Water can be extracted with other methods. It is possible to convert methane gas into liquid oil.

? Formula and estimated creation method suits well into known methane sources. Swamps produces methane all the time. Gas fields are usually near water. Methanol is the most power fuel with 32% hydrogen level, methane and booze comes 2nd with 25% hydrogen level. Common petrol's hydrogen level is 14%. Methane doesn't have oxygen like methanol and ethanol-booze.

Friday, 21st February 2020 - Chain reaction for plants

Calculated solar energy plants uses for the conversion. One oil barrel has around 6 000 MJ energy. During the growth time plants gets only around 600 MJ energy from solar beams. Possible that plants uses sun beams to ignite chain reaction for collected CO2 reserves. During the reaction, plants uses freed single oxygen atoms for running the reaction. Loose oxygen atoms, which searches a companion, causes all kinds of movements and internal pressure systems in the mixture.

When so 
- First you detonate one H2O molecule :  H2 + O
- Free oxygen atom detonates next water molecule : 2 H2 + O2
- The free hydrogen atoms detonates two CO2 molecules : CH₂ + CH₂ + O₂ + O₂
- Eventually CxHx compounds gets together : C₂H₄

2 x H₂O + 2 CO₂ ===> C₂H₄ + 3 O₂

The resulting gas is no longer methane, it is ground oil's gas form alias ethene. Methanol is the only CxHx compound with only one Carbon atom. In methanol another H₂ divides into one loose oxygen atom : CH₃OH.

- - - -

Plants reaction needs around 10% external energy for the produced energy contents. The chain reaction doesn't take easily place in atmosphere. Nitrogen keeps carbon dioxide and water molecules so far from each other. Then the creation of ethene needs higher temperature-pressure systems.

In principle it is possible to build small electric converters to busy street sides and rooms. At busy street or indoors the converter adds oxygen  and removes carbon from the air. Handy apparatus in sub marines and smaller spacecrafts.

Converter is an option for trash plants. Efficient converter needs lots of greenhouse gases. The reaction is ideal for CO₂. The methane conversion obviously takes place without electricity and high temperature-pressure system and also with all C_xH_x compounds, but it is slow.

Converter downgrades air humidity. Converter can use river or ocean water for process.
Converter can be upgraded to efficient air cleaner-oxidizer for enclosed spaces.
Both processes are physical, natural reactions. They are safe and takes place in our world all the time.

- - Running out of time and resources - -

Methane-ethane converter allows you to "burn" good soil, convert ocean water and good soil into gas and oil. Basic elements for life. This form of converter can bring lots of humidity from oceans to on-ground recycling system. As bonus you get electricity from the process.

Primary purposes of space exploration and ocean bottom mappings is to find carbon and later also water. Just like people in Maxwell Thunderbird stories does.
- Exhaust gases rotting to methane, oxygen and hydrogen always recycles CO₂ to O2 and CxHx. Planet doesn't need life for the cycle.
- Carbon dioxide cannot easily born without hydrogen, oxygen and carbon. This means, that planet with CO₂ in it's atmosphere, should have corresponding amount of water in somewhere.

- Oceans fill 71% from earth's surface. Their area is around 360 million km². Average depth is 3,8 km, which makes 1 400 km³.

Monday, 24th February 2020 - Cheap gas liquidizer-vaporizer

Cheap gas liquidizer works densities in between solid, liquid and gas forms. First you have a strong tank. You heat the tank to 100C. You fill it with water vapors and CxHx gas. Then you start to cool the tank. After water in tank freezes, the closed tank has an enormous vacuum. When you fill cold tank with cold water-ice, with heating you get enormous pressures into tank.

With this tank you can get the CxHx melting and gas points into easily accessible range.

Sunday, 23rd February 2020 - Liquid fuel fire with oxygen extractor

! Ammo with liquid or solid explosives uses vaporizing for creating pressure-explosion system. 
! Explosion of an ammo with embedded oxygen follows these reactions and calculations.

Oxygen extractor fire is short chain reaction, one molecule event. Perfect fire has four possible results.
Fire forwards with self-ignition. Heat from previous events detonates new molecules all the time.

C₂H₄ + 4 x O₂ = 2 x H₂O + 2 x CO₂
C₂H₄ + 3 x O₂ = 2 x H₂O + CO₂ + CO
C₂H₄ + 2 x O₂ = 2 x H₂O + 2 x CO
C₂H₄ + 1 x O₂ = 2 x H₂O + 2 x C

- C + C can also be C₂

Nuclear fire

In carbon-hydrogen fire hydrogen is the active component. Fire should always create two water molecules.
Carbon-particle pollution comes from lack of oxygen. Black carbon-smoke is typical for diesel engine.

First oxygen breaks the compound : C₂H₄ + O₂ => H₂O + O
Second oxygen breaks the remaining compound : C₂H₂ + O₂ => H₂O + O + O
- loose oxygen atoms can form new O₂ molecule.
- carbon dioxide creation does not necessarily take place. 
Loose carbon grabs one oxygen : C₂ + O₂ => CO₂ + C

Second oxygen breaks the compound : C₂H₄ + O₂ => H₂O + O
Another carbon grabs one oxygen : C + O₂ => CO₂

Weighed volume with optimal mixture

In common 1/14 air-fuel mixture, the CxHx / Oxygen ratio is 1/3.
In perfect fire ratio is 1/4, but petrol doesn't burn well with this ratio.

One gas form C2H4 weighs  28 --> 28 / 1.26 = 22.22
One liquid form C2H4 weighs  28 --> 28 / 760 = 0.04
Three O2 weighs 3 * 32 = 96 --> 96 / 1.43 = 67.13
- This makes totals of 89.35 and 67.17

Two H2O weighs  2 * 18 = 36 --> 36 / 0.6 = 60.00
One CO2 weighs 1 * (12 + 32) = 44 / 1.9 = 23.16
One CO  weighs  1 * (12 + 16) = 28 / 1.25 = 22.40
- This makes total of 105.56

Gas expansion volume is 16.21, liquid is 38.39.
Liquid expansion is 2.37 times bigger and better than gas.

Water Booster

When you boost engine with water conversion :
One liquid form H2O weighs  18 --> 18 / 1000 = 0.02
One gas form H2O weighs  18 --> 18 / 0.6 = 30.00

With one water molecule initial volume is 89.37 or 67.19 and resulting volume is 135.56
- gas form expansion is 2.85 times bigger
- liquid form expansion is 1.78 times bigger.

Roughly saying this water booster consumes as much water as fuel.
- possible to build steamer-like cycling system for water.

Heating of water

- fuel vaporizes and burns before water.
- first you warm water to boiling point, could be around 150C 
- pressure creation comes from nominal heat of vaporization
- then you warm the vapor to fires temperature.

When you burn one liter fuel, you get around 30 000 kJ net energy.
When you vaporize and pressurize water, you need around  800 J per liter.
- warming to boiling point takes around 100 J.
- conversion from liquid to gas is said to take around 600 J.
- after conversion you need around 100 J for warming.

Maximum secure fuel-water ratio is around 1 to 20. In engine hot cylinder walls raises secure ratio from ammo  ( 1 / 10 ).
- with gas welder like nozzle system you can burn fuel with water.
- Petrol needs around 100 J per liter for liquid to gas conversion. This conversion does not reduce energy contents of burned fuel.

One liter vapors weigh 0.6 grams. For 1C hike vapors need around 0.0003 J / liter. 
One liter air weigh 1.2 grams. For 1C hike air needs around 0.0003 J / liter. 
One liter oxygen weigh 1.4 grams. For 1C hike oxygen needs around 0.0003 J / liter.

When you look the energy demands for heating, water sucks lots of energy from fuel.
In principle, without water-booster you waste the produced heat energy. You take advantage only from heat-gas expansion.

Volume with Carbon Monoxide

One gas form C2H4 weighs  28 --> 28 / 1.26 = 22.22, liquid is 0.04
Two O2 weighs 2 * 32 = 64 --> 64 / 1.43 = 44.76
- This makes totals of 66.73 and 44.78

Two H2O weighs  2 * 18 = 36 --> 36 / 0.6 = 60.00
Two CO  weighs  2 * (12 + 16) = 56 / 1.25 = 22.40
- This makes total of 82.40

Gas expansion volume is 15.67, liquid is 37.62.
Liquid expansion is 2.40 times bigger than gas.

Carbon monoxide is fuel. In human body it can result into unwanted fires. Then it consumes oxygen from the air.

Volume with perfect burn

One gas form C2H4 weighs  28 --> 28 / 1.26 = 22.22 and liquid 0.04
Four O2 weighs 4 * 32 = 128 --> 128 / 1.43 = 89.51
- This makes totals of 111.73 and 89.55

Two H2O weighs  2 * 18 = 36 --> 36 / 0.6 = 60.00
Two CO2 weighs  2 * (12 + 32) = 88 / 1.9 = 46.32
- This makes total of 106.32

Gas expansion volume is -5.41, liquid is 16.77.
- in common fire the volume of the active elements falls in fire.
- perfect liquid fire matches optimal gas fire.
- with water booster, you can move to perfect mixture.

With water booster initial volumes are 111.75 and 89.57 and result is 136.32
Gas expansion volume is 24.57, liquid is 46.75.

With double booster you get into optimal mixture gains.

Weighed volume with optimal air mixture

In this calculation you use 1/14 air-fuel mixture.

One gas form C2H4 weighs  28 --> 28 / 1.26 = 22.22
One liquid form C2H4 weighs  28 --> 28 / 760 = 0.04
Three O2 weighs 3 * 32 = 96 --> 96 / 1.43 = 67.13
The inactive air adds around 79% to O2 = 268.52.

- This makes totals of 357.87 and 335.69
- Resulting total is 105.56 + 268.52 = 371.08

Gas expansion volume is 13.21, liquid is 35,39.
Liquid expansion is 2.68 times bigger than gas.

In reality heat expansion doubles the filler gases volume.
Water booster expands it's own volume from 1 to 1500.

Saturday, 29th February 2020 - Table's and definitions are not correct

Tested how water boils. Used 1 500W element and closed kettle for the test.
- 1 500W element produces 25 Joules in one minute.

With full power water started to boil after 8 minutes.
- hike from 20C to 100C needed 200 Joules.
- When you divide 200 with 80 water needs 2.5 Joules for 1C hike temperature.

With full power kettle was empty after 54 minutes.
- emptying took 46 minutes
- full vaporization needed 1 150 Joules.

This fault gets it's explanation from electric bills. When you heat water with faulty 1 500 Watt second,
- during 8 minutes you produce 720 kJ energy and you need 9 kJ for 1C. 
- during 46 minute emptying you produce 4 140 kJ faulty energy. 

- the 9kJ / C matches to official 4.18 kJ. Stove-kettle wastes lots of heat, efficiency is around 50%. 
- with around 50% efficiency heat of vaporization is the amount of energy you need for fully vaporizing 1 kg liquid.

- when all values are incorrectly calculated, the fault doesn't matter.
- but when you match heat energies to for example calculated driving resistances, the results are far from correct.
- not in my knowledge, how fuel's and fire's energy contents are calculated. You cannot measure fire with electricity. Energies could come from pressure.

When engine runs at 6000 rpm, one firing stroke lasts 10 ms. You have around 5 ms for vaporizing water.
- downgraded energies are 100 Joules for heating, 600 Joules for vapors and 700 Joules in total.

One Joule matches energy creation for 1 second. When so, you must produce 700 Joules in around 5 ms.
When you upgrade this power demand to 1 second standard, you need 140 kJ for vaporizing 1 liter water in 5 milliseconds.

When so, there aren't physical limits for the amount of water, you vaporize in engine. With 30 000 kJ you can vaporize 250 kg or liter water.
Practical and constructional problems comes into way long before 250 liter maximum.

You might want to use 1 to 20 maximum for water-fuel ratio. 1 to 20 converts 1 liter water in 1 ms with 1 500 J conversion energy.