MightyH20
MightyH20 t1_jedw0r0 wrote
Reply to comment by marcusaurelius_phd in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
Germany, has progressed farther on the COP target and CO2 reduction and agreement as opposed to France though.
Electricity is just a quarter of total energy consumption.
MightyH20 t1_je4c7bs wrote
Reply to comment by AJ_Gaming125 in German manufacturer achieves 80% overall efficiency with new PVT solar module by galileofan
Heat output can be used to provide heating or complement heatpumps. It is de facto an energy flow to be applied in homes thereby allowing a certain amount of energy to be used, otherwise wasted.
MightyH20 t1_je4c2wk wrote
Reply to comment by ShockMonkey2001 in How will we feed 10 billion people by 2050? Ask the Netherlands. by filosoful
World economies will be progressing allowing a larger share of the population to buy more things including food.
MightyH20 t1_je4bktn wrote
Reply to comment by Botlawson in The Swiss hypersonic hydrogen jet aiming to fly between Europe and Australia in 4 hours by mancinedinburgh
Third, using Hydrogen cools down various propulsion systems due to pressure difference when distributed to the combustion engine.
MightyH20 t1_jdzk1vi wrote
Reply to comment by ialsoagree in The Greenland Ice Sheet is close to a melting point of no return by Vucea
No offense but all these numbers are useless given the massive scale of the quantity of a percentage increase or decrease from a reference point.
The only metric that is relevant in terms of climate change is the amount of emissions and in particularly the progression towards climate targets.
A fair question would be how far a country has progressed towards that target?
MightyH20 t1_jdzjkza wrote
Reply to comment by UnifiedQuantumField in The Greenland Ice Sheet is close to a melting point of no return by Vucea
The outsourcing of emissions hit it's peak at the beginning of 2008. Then the financial crisis hits and the outsourcing of emissions decreased significantly. Currently, China is responsible for their own emissions which is the result of domestic growth and in particular the construction sector.
Similarly, we can argue that "the east" had outsourced emissions in the 1950s to the 1990s to "the west" since the manufacturing happened in "the west". In fact, China's rapid growth was made possible by western companies and products, yet this isn't accounted for today as well.
In reality the outsourcing of emissions is way to complex to attribute it to actual policy making or distribution of emissions on a global level.
Edit, added source:
> That said, these transfers only account for a fraction of the rise in developing country emissions. Which makes sense. In China, roughly 87 percent of the steel and 99 percent of the cement produced is consumed domestically.
https://www.vox.com/energy-and-environment/2017/4/18/15331040/emissions-outsourcing-carbon-leakage
MightyH20 t1_jdub3xm wrote
Combined with living in an authoritarian/dictatorial system of oppression would make be depressed as well.
MightyH20 t1_jdlnofu wrote
Reply to Russia can't meet India arms deliveries due to Ukraine war, Indian Air Force says | CNN by Ducati_Don
Karma, albeit an imaginary concept in the west it is a very "real" concept in the east. This is what karma tastes like.
MightyH20 t1_jav2d1b wrote
Reply to comment by empireofjade in Universal Hydrogen Successfully Completes First Flight of Hydrogen Regional Airliner by tooch_my_gooch
Aah that makes sense. In that case it would be too complex to calculate it.
MightyH20 t1_jaqk2c6 wrote
Reply to comment by hiles_adam in Universal Hydrogen Successfully Completes First Flight of Hydrogen Regional Airliner by tooch_my_gooch
Thanks for looking it up! Usefull information that this article has left out imo.
>Today’s 15-minute flight used about 16kg of gaseous hydrogen — half the amount stored in two motorbike-sized tanks within the passenger compartment.
That is interesting. 1 kilograms of hydrogen equals to 33.33 kWh of useable energy. This means the entire flight consumed only 533.28 kWh.
I wonder under what pressure the hydrogen was stored given the relatively small size of the tanks with the total capacity to hold 30 kilograms.
>for 15 minutes of flight a 747 burns 3600L of aviation fuel, or 2880kg
This could be correct though. I know that a 747 uses around 3 to 4 liters of kerosine every second! And shows the massive efficiency difference between both technologies. 3600 L of kerosine equals to 37,564 kWh.
However, the major difference is probably the weight of the planes and that a 747 uses jet engines whereas this was a smaller prop-plane.
Perhaps a better comparison would be a comparison to a standard propellor plane. According to "the internet" a standard propellor plane uses 900 gallons of kerosine an hour or 225 gallons per 15 minutes. That equals to 8888 kWh.
Conclusion
Hydrogen prop plane 15 minutes flight: 533 kWh energy (16kg of hydrogen) consumption.
Standard fossil prop plane 15 minutes flight: 8888 kWh energy (225 gallons of kerosine) consumption
MightyH20 t1_jaqaoq8 wrote
Reply to Universal Hydrogen Successfully Completes First Flight of Hydrogen Regional Airliner by tooch_my_gooch
> flew for 15 minutes, reaching an altitude of 3,500 MSL
This is quite amazing and could be relatively easy expanded in terms of flight time. The only question I have is how many kilograms of hydrogen did they use for the 15 mins of flight time.
MightyH20 t1_jadtd80 wrote
Reply to comment by deckardcain1 in The U.S. needs more than the CHIPS Act to stay ahead of China: MIT report by Vailhem
The most patents applications were by the EU with 2.9mio patents. As opposed to China with 1.3mio and US with 0.3mio
Source: https://www.theglobaleconomy.com/rankings/patent_applications_by_residents/
MightyH20 t1_ja2l6zc wrote
Reply to The cities built to be reusable by WestEst101
Makes no sense to built homes from wood in climate change affected areas that deal with floodings, hurricanes or wildfires.
MightyH20 t1_j9nylp6 wrote
Reply to comment by Ill-Conclusion6571 in Magnitude 7.2 earthquake strikes Tajikistan, near border with China by Papppi-56
Everything is possible. Over the time period of millions of years.
MightyH20 t1_j9nxq99 wrote
Probably holograms because it solves a lot of material cost of producing a screen. Also the size and shape of phone are determined by the screen. With a hologram projector a "phone" could be any size or shape.
A hologram projector is also much more energy efficient (no source though) as compared to modern day screens.
Here is an example of Hologram technology applied in Japan.
MightyH20 t1_j9ejifm wrote
Reply to comment by EconomistPunter in Russia's economy shrinks by less than expected by SnooPaintings5866
One can do math on the economic impact of dead or wounded soldiers not attributing to economic activities.
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Average employment in Russia: 60%
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Average Russian GDP per Capita: 12.000 a year.
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Wounded or dead Russians: 200.000
Missing out GDP (0.6 * 200.000)*12.000= $1.440.000.000 ($1.4B a year).
MightyH20 t1_j7odvb9 wrote
Reply to comment by cyberFluke in New battery seems to offer it all: lithium-metal/lithium-air electrodes by nastratin
You mean like real world small nuclear reactors and atomic batteries?
Just to give you a heads up. This is the real world, Brad.
MightyH20 t1_j7odqtt wrote
Reply to comment by r0botdevil in New battery seems to offer it all: lithium-metal/lithium-air electrodes by nastratin
Ah yes. Elementary knowledge.
https://en.m.wikipedia.org/wiki/Atomic_battery
Ever heard of a pacemaker?
MightyH20 t1_j7odn8z wrote
Reply to comment by mhornberger in New battery seems to offer it all: lithium-metal/lithium-air electrodes by nastratin
Which works and is currently under production as static energy carriers in the form of small nuclear reactors.
MightyH20 t1_j7maas3 wrote
Reply to comment by r0botdevil in New battery seems to offer it all: lithium-metal/lithium-air electrodes by nastratin
The article isn't about electric cars.
MightyH20 t1_j7k4a32 wrote
Reply to comment by InsularAtlantica in New battery seems to offer it all: lithium-metal/lithium-air electrodes by nastratin
Its purely theoretical.
Nothing beats Plutonium-237 that provides roughly 200 watts per gram for decades on end without recharging.
MightyH20 t1_j5e5u2p wrote
Reply to comment by huskarpicker in India: The Modi Question (2023) - BBC investigates Indian PM Modi's rise in the Hindu Right-Wing stratosphere and deadly Anti-Muslim and Anti-Sikh Politics [00:59:00] by CryMore36
>BBC is well known for being biased
Yeah it's not. But keep viewing that authoritarian Russia Today and NDTV news.
MightyH20 t1_ixc20i1 wrote
Reply to comment by jeffinRTP in Environmental Impacts of Food Production by Corvid-Moon
Because plants consume it.
MightyH20 t1_iwkqmp6 wrote
Reply to comment by dwhite21787 in Croatian EV maker Rimac claims 412km/h speed record by Loki-L
Not yet. There is the Formula-E though.
MightyH20 t1_jee6cbs wrote
Reply to comment by marcusaurelius_phd in The European Union to nearly double the share of renewables in the 27-nation bloc's energy consumption by 2030 amid efforts to become carbon neutral and ditch Russian fossil fuels. by chrisdh79
Your example is irrelevant since France already has lower targets. And yet, Germany has progressed more as opposed to France in % reduction.
COP target Germany: cut 65% emissions from 1990 emission level. Current emissions from 1050 to 675 million tonnes. Reduction = 36%
COP target France: cut 40% emissions from 1990 emission level. Current emissions from 400 to 300 million tonnes. Reduction = 25%.
Not only is France behind in the progress to meet targets, the emissions in absolute numbers are way less too.