Re: What is the limit? (was RE: multi-homing fixes)
At 11:10 PM 8/29/01, Vadim Antonov wrote:
On Wed, 29 Aug 2001, Andrew Partan wrote:
I have proposed to various router vendors the possibility of giving them a chilled water feed instead of lots of cool air. At the moment they seem to not need it, but I would not be surprized to find something like this needed at some point.
Err. Water and electricvity make a dangerous mix.
And this was not a problem in IBM Mainframe computers because? I'm not registering an opinion one way or the other at this point on whether routers should consider other forms of cooling, but using water or other liquids to cool electronics is not a new concept. Properly engineered, there is no particular danger. ----------------------------------------------------------------- Daniel Senie dts@senie.com Amaranth Networks Inc. http://www.amaranth.com
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool. Maybe on Crays? On Wed, 29 Aug 2001, Daniel Senie wrote:
At 11:10 PM 8/29/01, Vadim Antonov wrote:
On Wed, 29 Aug 2001, Andrew Partan wrote:
I have proposed to various router vendors the possibility of giving them a chilled water feed instead of lots of cool air. At the moment they seem to not need it, but I would not be surprized to find something like this needed at some point.
Err. Water and electricvity make a dangerous mix.
And this was not a problem in IBM Mainframe computers because?
I'm not registering an opinion one way or the other at this point on whether routers should consider other forms of cooling, but using water or other liquids to cool electronics is not a new concept. Properly engineered, there is no particular danger. ----------------------------------------------------------------- Daniel Senie dts@senie.com Amaranth Networks Inc. http://www.amaranth.com
-- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
Unnamed Administration sources reported that Alex Rubenstein said:
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool.
Maybe on Crays?
Yep. As I recall, some crays used H20 to cool side rails that clamped onto the boards' edges. Other used some kind of CFC piped directly onto the boards. -- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool.
Maybe on Crays?
Flourinert. very odd Lime green transparent liquid. in our cray, it was in a tank with a toilet float to keep the fluid topped up. the pipe bend radii for the cray fluid was *more* than the IBM waterpipes. our floor was raised to meet IBM. we had to sweat blood to get the cray in because of a 10-12mil difference. :-( the 400hz voltage genset was deeply scary. circuit breakers that smoke when they blow, fuzes like those in 'bil(l) the galactic hero' -George
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool.
Maybe on Crays?
dunno about Crays..... but definitely on Control Datas ETA 10s designed to replace the CYBER 205 in 1988-1990 at the von Nueman supercomputer center in princeton we had 2 eta 10s.... each with large CPU boards that were immersed in tanks of liquid nitrogen. If we had a AC problem the operator were trained to do the quickest possible shut down on the machines..... even so with in five minutes the temp inside the machine room went up by 10 degrees -- **************************************************************** The COOK Report on Internet, 431 Greenway Ave, Ewing, NJ 08618 USA (609) 882-2572 (phone & fax) cook@cookreport.com Index to 9 years of the COOK Report at http://cookreport.com From now through Sept 15th half price sale on university library site license and access to ALL back issues. Site license $575 and all back issues $300. http://cookreport.com/sale.shtml ****************************************************************
The crays were liquid nitrogen cooled, using mercury would be really a bad idea since its a pretty good conductor. ak Alex Rubenstein wrote:
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool.
Maybe on Crays?
On Wed, 29 Aug 2001, Daniel Senie wrote:
At 11:10 PM 8/29/01, Vadim Antonov wrote:
On Wed, 29 Aug 2001, Andrew Partan wrote:
I have proposed to various router vendors the possibility of giving them a chilled water feed instead of lots of cool air. At the moment they seem to not need it, but I would not be surprized to find something like this needed at some point.
Err. Water and electricvity make a dangerous mix.
And this was not a problem in IBM Mainframe computers because?
I'm not registering an opinion one way or the other at this point on whether routers should consider other forms of cooling, but using water or other liquids to cool electronics is not a new concept. Properly engineered, there is no particular danger. ----------------------------------------------------------------- Daniel Senie dts@senie.com Amaranth Networks Inc. http://www.amaranth.com
-- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
On Wed, 29 Aug 2001, Alex Rubenstein wrote:
I recall something about liquid (something, could be nitrogen, or perhaps even mercury) that was chilled; PC Boards were then submersed in the liquid to keep cool.
Maybe on Crays?
Maybe in someone's garage? :) http://www.octools.com/articles/submersion/submersion12.html C
-- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
participants (7)
-
Alex Rubenstein -
arman khalili -
Charles Sprickman -
Daniel Senie -
David Lesher -
George Michaelson -
Gordon Cook