Talk:ISS ECLSS

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Merge proposal[edit]

I'd like to suggest the merging of Elektron (ISS), Oxygen Generating System and Air Revitalization System into this article, as they are small, stub articles that don't particularly need to be standalone, and would be better served as sections here. I'd also like to suggest Life support system#International Space Station is merged here, as most of its content is duplicated both here and at the main ISS article. I also think that the paragraph on life support systems at Zvezda (ISS module) could be moved here, and a section written up on the Chemical oxygen generators used on ISS. As always, comments are greatly appreciated. Colds7ream (talk) 14:25, 18 January 2010 (UTC)

Well, a week has gone by with no dissenting voices, so I'm going to execute the merge. Colds7ream (talk) 12:15, 24 January 2010 (UTC)

Hmmm. It appears the merger has put information into this ISS-related article that has nothing whatsoever to do with the article, or the ISS. I have tagged the first bit of it, so it may be removed in due course if no relevance is shown. N2e (talk) 20:17, 9 December 2010 (UTC)

The Vozdukh was the first CO2 removal system sent to the station, and is still present. How exactly is this irrelevent? Colds7ream (talk) 22:04, 9 December 2010 (UTC)
For that matter, the Vika is used as a backup system on ISS too - why have you suddenly decided to demand the removal of seemingly random sections? The USOS is not the entire station, the Russians do have a presence on it, you know. Colds7ream (talk) 22:14, 9 December 2010 (UTC)
Take it easy, I am only working to improve the encyclopedia. I missed the connection in the prose that is in the article. I'll work on cleaning it up when I get a chance. Now, to your statement that I was "demand[ing] the removal" of anything. Please look again. I think you will find that you have misinterpreted what I wrote. Asking for citations, and then having citations be provided, would of course answer the question about relevance to the article, wouldn't it? Cheers. N2e (talk) 05:39, 10 December 2010 (UTC)
Apologies, I'm so used now to US-centric editors demanding sweeping changes to articles about this international project its become a reflex reaction... Colds7ream (talk) 07:58, 10 December 2010 (UTC)
Apology accepted. Happy to continue working for a better article, and a better encyclopedia. N2e (talk) 14:30, 10 December 2010 (UTC)

Waste heat dissipation[edit]

There appears to be no description of the ISS system(s?) for waste heat dissipation into space in any Wikipedia article. How big is it? How much heat can it dissipate into space? How much power does it take to run it? What is the mass of the waste heat rejection system? Etc. Does anyone have a good source for this? N2e (talk) 20:04, 9 December 2010 (UTC)

A fair point - although to be honest this entire article is in dire need of some expansion. Colds7ream (talk) 07:59, 10 December 2010 (UTC)
Okay, I found a source for some info on the ISS Thermal Control System. It is in a pretty massive assemblage of photographs (some stunning) photographs with some textual descriptions at a web page called the INTERNATIONAL SPACE STATION TOUR. Great graphics of how the thermal control system works! And includes an explanation of both active and passive design approaches to heat rejection from the spacecraft. About 3/4 the way to the bottom of the huge web page, I found this text:

"The Thermal Control System (TCS) maintains ISS temperatures within defined limits.

"The four components used in the Passive Thermal Control System (PTCS) are insulation, surface coatings, heaters, and heat pipes.

"The Active Thermal Control System (ATCS) is required when the environment or the heat loads exceed the capabilities of the PTCS. The ATCS uses a mechanically pumped fluid in closed-loop circuits to perform three functions: heat collection, heat transportation, and heat rejection.

"Inside the habitable modules, the internal ATCS uses circulating water to transport heat and cool equipment. Outside the habitable modules, the external ATCS uses circulating ammonia to transport heat and cool equipment."

Although this is not exactly a fully [{WP:RS|reliable source]], it does provide a great deal of info that we did not previously have, and may provide some useful search terms for any editor who would like to do further research. N2e (talk) 19:22, 28 January 2011 (UTC)
This looks like an online version of the ISS Reference Guide (Amazon link) - definitely a reliable source. Colds7ream (talk) 13:14, 30 January 2011 (UTC)

Article cleanup/expansion[edit]

I just came to this article in recent days, and frankly, misread some of it because is seems to be a bit of a hodgepodge of material that hasn't been written in a good encyclopedic way. I'd like to help improve it, but would appreciate it if other editors would play a simultaneous role in improving it. I would help write some contextual prose around the existing material, but it would be quite helpful to have others read/modify that, as well as find sources for a lot of the currently unsourced material. Who's up for this? N2e (talk) 16:30, 10 December 2010 (UTC)


For class, I have been researching the water reclamation part of the ECLSS and there have been a couple of iterations. I also saw that there have been at least 2 generations of ECLSS on the US side of the ISS Just a heads up. I will post on here after I turn in my HW :) -Billy — Preceding unsigned comment added by Wnvalliant (talkcontribs) 19:47, 20 February 2016 (UTC)

Scope of article[edit]

In looking a bit more at the "ISS Tour" source I listed above, I realize the the "ISS ECLSS" is defined fairly narrowly, and would seem to explicitly (using NASA's terminology) NOT include the thermal control and waste heat rejection part of the environmental control. Viz, as this article is currently titled, it would seem that the thermal control heat aspects of not be in-scope to the broader subject of ISS "environment". I believe this is an artifact of NASA naming conventions. This is covered on pp 52 of that source; page down about 2/3 of the way in the giant html page of images—the NASA "ISS ECLSS" explicitly leaves out the thermal/heat aspect of the environment. On the other hand, we do see that "ECLSS" and "environmental control and life support system" is also used more broadly in the design of other spacecraft systems. For example, it appears Bigelow Aerospace is using the term in the broader sense: how to control all aspects of the spacecraft interior environment for the humans that might be in there.

But this article is about the ISS system. So what to do? We could start a new Wikipedia article on the ISS Thermal Control System. Or we might intentionally broaden this article, to go beyond NASA's narrow use, and speak to all aspect of the environmental control, including termal control and heat rejection—possibly with the need to rename the (now broader) article. I could support either approach, but thought it worthwhile to discuss here first lest a new article get created that would shortly thereafter be merged back into this one. What think others? N2e (talk) 15:09, 30 January 2011 (UTC)

I'd suggest we just put the thermal control systems in this article, and I don't really see a need to rename it; a redirect from ISS thermal control system would probably be fine. Colds7ream (talk) 17:35, 30 January 2011 (UTC)
Okay on the inclusion of thermal control for the ISS into this article. That works for me. So unless someone else weighs in in the next week or so, looks like we have a consensus on the scope question. On the appropriate name, I'm not so sure; but that can properly be left for later on. N2e (talk) 01:21, 2 February 2011 (UTC)

NASA reports that describe the life support systems and the internal thermal control system onboard the ISS can be found on the NASA Technical Report Server, http://ntrs.nasa.gov/search.jsp The reports are "Living Together in Space: The Design and Operation of the Life Support Systems on the International Space Station" (NASA TM-1998-206956) [Note: only volume one is available, Volume two is distribution restricted.] and "Living Together in Space: The International Space Station Internal Active Thermal Control System Issues and Solutions - Sustaining Engineering Activities at the Marshall Space Flight Center, 1998-2005" (NASA TM-2007-214964). Uptous2 (talk) 07:10, 2 February 2013 (UTC)

NASA References for ISS Life Support and Thermal Control Systems descriptions[edit]

NASA reports that describe the life support systems and the internal thermal control system onboard the ISS can be found on the NASA Technical Report Server, http://ntrs.nasa.gov/search.jsp The reports are "Living Together in Space: The Design and Operation of the Life Support Systems on the International Space Station" (NASA TM-1998-206956) [Note: only volume one is available, Volume two is distribution restricted.] and "Living Together in Space: The International Space Station Internal Active Thermal Control System Issues and Solutions - Sustaining Engineering Activities at the Marshall Space Flight Center, 1998-2005" (NASA TM-2007-214964). Uptous2 (talk) 07:12, 2 February 2013 (UTC)

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Power requirements[edit]

I think it would be good to say somewhere that The ISS uses 10.64 kW for its oxygen generation and life support ECLSS [1] Robert Walker (talk) 13:12, 12 January 2018 (UTC)