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Chandraprakash G (சந்திரப்பிரகாஷ்)
Being an Atheist, My mind is my temple and conscience is my god. - Prakash
Being an Atheist, My mind is my temple and conscience is my god. - Prakash
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Hydrogen Energy Technology, a complete overview.

+Fuel Cell and Hydrogen Energy Association
+Hydrogen Tech
+Tesla
+TOYOTA
+Mirai Toyota
No wonder why +Elon Musk said "Why would anyone buy a Car which runs on Hydrogen, which converts H2 to Electricity, stores in battery, and then battery powers motor with electricity :D"

There is one fundamental problem with Hydrogen vehicles,
i.e DEPENDING ON FUEL STATION [3RD PARTY] FOR REFILL !!!!!!!!!!!!!

____________________________________________________________________________
Stats for Pros:
[Everything about Hydrogen fuel for vehicles]
____________________________________________________________________________

But with a pure Electric vehicle, you can generate your own electricity in home with solar, and use that to charge the car !!

Technical problems with Hydrogen fuel cars are,

- Too complex drive unit, with large fuel tanks, large fuel cell converter, and other nonsense where with pure electric vehicle like Tesla, you have battery, you have AC Motor, and all other are free space for storage !!

- Hydrogen is expensive to make and very less efficient too,
presently to generate 1 Kg of Hydrogen gas, you need 56 kWh of electricity to convert it from Water to Hydrogen [9 (kg or liter) of water will give 1 Kg of Hydrogen],

- The room pressure is around 1 bar (at sea level),
the pressure inside aerosol perfume can is around 5 to 20 bars,
and the Hydrogen is typically stored at 700 bars, which is quite a scary amount of pressure.

Added the super quality metal to hold that 700 bars cost around $10,000 to $20,000 alone,
though it's secure and have capacity to go up to 1400 bars (double) and even take a sniper bullet and doesn't burst !!!

- One more problem is, Hydrogen is very light, meaning,
density of Hydrogen at 700 bars = 42 gram / liter (or) 42 kg / m3.

That means,
you need roughly 25 liter tank to store 1 Kg of Hydrogen [1000 / 42 =~24*] which is very large in volume,
added, you need 125 liter tank to store 5 Kg of Hydrogen, which is the size of Toyota Mirai.

Even though, the energy density of 1 Kg of Hydrogen at 700 bars =~ [40 kWh / kg],
the down side is the large tank needed to store it,
where in Tesla or pure electric vehicle you can use all those space in Frunk and Trunk.

- Also considering performance,
Toyota Mirai is capable of producing only 113 kW of power [152 BHP],
Tesla Model S is capable of producing massive 570 kW of power [762 BHP].

- Finally coming to the cost and mileage,
it cost around $12 to $18 to refill one Kg of Hydrogen at 700 bars (with subsidies !!!),
and with 1 Kg of Hydrogen at 700 bars, your Toyota Mirai can achieve roughly 90 Km.

Which means, For +TOYOTA Mirai and other Hydrogen vehicles,

+ METRIC (Base 10 system, which is used by 190/193 countries in the world)
16.7 cents / Km [or 11.7 Rs / Km] (while 1 Kg of H2 = $15).
11 cents / Km [or 7.7 Rs / Km] (while 1 Kg of H2 = $10) - future prediction even if H2 prices comes down.

- IMPERIAL (Grandpa units, used by 3/193 countries in the world)
27.3 cents / mile (while 1 Kg of H2 = $15).
18.2 cents / mile (while 1 Kg of H2 = $10) - future prediction even if H2 prices comes down.

Average mileage of Toyota mileage on road is around [90 Km / 55 Miles] for 1 Kg of H2.

But considering +Tesla and other pure electric vehicles,

+ METRIC (Base 10 system, which is used by 190/193 countries in the world)
2.8 cents / Km [or 2 Rs / Km] (while 1 kWh of electricity = 14 cents) for High power charging >50 kW
1.4 cents / Km [or 1 Rs / Km] (while 1 kWh of electricity = 7 cents) for Low power charging <50 kW
0 cents / Km (while you charge with your home solar = 0 ) - while using car to office daily (unlike road trips)

- IMPERIAL (Grandpa units, used by 3/193 countries in the world)
4.5 cents / mile (while 1 kWh of electricity = 14 cents) for High power charging >50 kW
2.2 cents / mile (while 1 kWh of electricity = 7 cents) for Low power charging <50 kW
0 cents / mile (while you charge with your home solar = 0 ) - while using car to office daily (unlike road trips)

Average mileage of Tesla is around 200 Wh / Km [or 5 km for 1 kWh].

Now that should give you a overall picture of the scenario of various energy technologies.

______________________________________
For density of Solid, Liquid and Gas materials:
frozenprakash.com/ji56ubiBUJk
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Never use WhatsApp payment unless you want your card details too to be given to Facebook :\

I hope people know Whatsapp is completely owned by Facebook, and they bought it just to get these informations.
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