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That was amazing. On a side note, and not complaining about this at all, how much did it cost to get that water to the space station? I guess that bag had may
by bobbo3 13y ago
That was amazing.
On a side note, and not complaining about this at all, how much did it cost to get that water to the space station? I guess that bag had maybe 300 ml?
- raphdg 13y agoTissues can be hanged somewhere on a clip, water evaporates, is picked up by dehumidifiers of the spaceship, goes back to the water system and purified back into drinking water.
- ygra 13y agoI guess they meant getting the drinking water to the space station in the first place. Water doesn't really compress well (unlike the hockey puck rag) and also weighs quite a bit so sending it up should be pretty costly.
- akadruid1 13y agovery roughly, water is $50 million per tonne on the ATV, so (even more approx) $30,000 for the water used in the video.
- quesera 13y agoIt's safe to assume that there is water on premises for other reasons.
- tempestn 13y agoHydrogen and Oxygen compress though, and are combined into water in the station's fuel cells.
- barkingcat 13y agoI remember reading that water is generated as a byproduct of the hydrogen fuel cells on board. And then the water vapour is also recycled and repurified back into the system. So it's a closed water system powered by solar energy inputs. Of course, the machinery necessary for this loop costs x billions, but the particular molecules of water used in this experiment probably came out of the internal water cycle and didn't cost to get the water there in the first place.
- barkingcat 13y agohttp://science.nasa.gov/science-news/science-at-nasa/2000/ast02nov_1/ http://science.nasa.gov/science-news/science-at-nasa/2000/as... So there is still some loss of water even with the recycling