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>renewables+storage also cost less; and cost is still in free fall. Except they don't because you can't even get that level of storage without a huge downside.
by deltaonefour 5y ago
>renewables+storage also cost less; and cost is still in free fall.
Except they don't because you can't even get that level of storage without a huge downside.
>Soon, synthetic hydrocarbons will be cheaper than most mined/refined/shipped, where that stuff is still needed at all.
Only because the supply of fossil fuels is dwindling. Using renewables to make this stuff will NEVER be as efficient as the way fossil fuels have been used in the past century. Free fuel out of the ground vs. making it? Free fuel is way more efficient then either biofuels or hydrogen that has to be made.
Ethanol and biodiesel are the two main types of biofuels, derived from organic matter (obtained directly from plants, or indirectly from agricultural, commercial, domestic, and/or industrial wastes). To be a viable alternative for petroleum, a biofuel should provide a net energy gain, offer clear environmental and economic benefits, and not reduce food supplies and/or increase their costs. Biofuels fall short of these requirements and should therefore stay a niche market, used moderately and optionally instead of mandated at wide-scale public use. Environmental groups themselves have found that between 2008 and 2022, biofuels will receive more than $400 billion in subsidies.
>Aircraft using LH2 will drive kerosene-driven out of all high-profit routes as quickly as they can be built and fielded
Unlikely. The large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), package the light gas by compression or liquefaction, transfer the energy carrier to the user, plus the energy lost when it is converted to useful electricity with fuel cells, leaves around 25% for practical use — an unacceptable value to run an economy in a sustainable future. Only niche applications like submarines and spacecraft might use hydrogen.
If planes use hydrogen getting on one will cost astronomically more than it does today. The business incentive and R&D on such things will be infinitely less. Planes will be running on oil for as long as the industry can.
You also still haven't apologized for being an ass. Please do that.
- ncmncm 5y agoOK, flagged.
- deltaonefour 5y agoBecause I asked for an apology after you accused me of being from Exxon? Flagging you. When you discuss things with people please refrain from offensive statements like "are you Exxon?" It's offensive and akin to like "Are you kkk?" There's really no need for that. Although I shouldn't have called you an ass. Dang I want to bring to your attention that although the word "ass" is more explicit, this person essentially started the waterfall and is saying things that are much more offensive but sort of more stealthy. The Exxon thing was a deliberate and targeted jab.