3 ms·

Air travel is responsible for a very significant percentage of our pollution into the atmosphere, greenhouse gasses that are causing huge amounts of global clim

by cryptoz 11y ago

Air travel is responsible for a very significant percentage of our pollution into the atmosphere, greenhouse gasses that are causing huge amounts of global climate change and will cost a fortune to adapt or fix. Any solution to rapid, high speed travel that significantly lowers greenhouse gas output is a very valuable thing, and certainly not a solution looking for a problem. The problem that hyperloop solves is high speed travel without gross pollution, something that no other solution has offered yet.

Someone1234 11y ago
> The problem that hyperloop solves is high speed travel without gross pollution, something that no other solution has offered yet. Do you have figures or estimates on that? How much energy does hyperloop use to decompress the entire tunnel, run the air locks, and move the trains? And are we assuming a perfect seal on every joint or are micro-leaks estimated in (e.g. due to weathering and wear)? On a related note how does one maintain hyperloop? For example segment joint restoration, do you take the entire tunnel offline?
- notatoad 11y ago
  >How much energy does hyperloop use to decompress the entire tunnel, run the air locks, and move the trains? whether it is more or less energy than it takes to keep an airliner aloft is kind of moot. Transport systems attached to the ground can be connected to the power grid, which is legally required to be at least 33% renewable energy by 2020. Jet engines can really only be powered by jet fuel, and exhausted directly into the stratosphere.
dogma1138 11y ago
Air travel is still only responsible for about 2% to 3% of global anthropogenic carbon emissions. This figure has remained constant mostly because even though air travel has increased jet engines these days are much more efficient than 25 years ago.
- venomsnake 11y ago
  But it delivers them straight in the atmosphere. So you must check air travel emissions impact.
  - dogma1138 11y ago
    Which makes it have less of an adverse effect actually.

by cryptoz 11y ago

Someone1234 11y ago

> The problem that hyperloop solves is high speed travel without gross pollution, something that no other solution has offered yet. Do you have figures or estimates on that? How much energy does hyperloop use to decompress the entire tunnel, run the air locks, and move the trains? And are we assuming a perfect seal on every joint or are micro-leaks estimated in (e.g. due to weathering and wear)? On a related note how does one maintain hyperloop? For example segment joint restoration, do you take the entire tunnel offline?

notatoad 11y ago
>How much energy does hyperloop use to decompress the entire tunnel, run the air locks, and move the trains? whether it is more or less energy than it takes to keep an airliner aloft is kind of moot. Transport systems attached to the ground can be connected to the power grid, which is legally required to be at least 33% renewable energy by 2020. Jet engines can really only be powered by jet fuel, and exhausted directly into the stratosphere.

dogma1138 11y ago

Air travel is still only responsible for about 2% to 3% of global anthropogenic carbon emissions. This figure has remained constant mostly because even though air travel has increased jet engines these days are much more efficient than 25 years ago.

venomsnake 11y ago
But it delivers them straight in the atmosphere. So you must check air travel emissions impact.
- dogma1138 11y ago
  Which makes it have less of an adverse effect actually.