[time-nuts] Rack-mounting an LPRO? (Heatpipe cooler)

Joe Gwinn joegwinn at comcast.net
Sun Feb 28 15:55:53 UTC 2010


At 2:02 AM +0000 2/28/10, time-nuts-request at febo.com wrote:
>Date: Sat, 27 Feb 2010 20:02:05 -0600
>From: Ed Palmer <ed_palmer at sasktel.net>
>Subject: Re: [time-nuts] Rack-mounting an LPRO?
>To: Discussion of precise time and frequency measurement
>	<time-nuts at febo.com>
>Message-ID: <4B89CE9D.4060103 at sasktel.net>
>Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>
>Sorry, the pictures got lost.  Let's try again.
>
>Ed Palmer wrote:
>>  What else is going to be in the rack?  If your 1U enclosure is packed
>>  in tight between other devices there might be no cooling at all.  You
>>  might need a fan to move some air.
>>
>>  I don't know if you can find something like this, but I scavenged heat
>>  sinks from an old Compaq DL760 server that might fit your situation. 
>>  Here's what the heat sink looks like.  The aluminum plate is about
>>  1/4" (6.4 mm) thick.  Notice the heat pipes.
>>
>>
>>
>>  Here's what it looks like on the LPRO.  You'll have to drill holes in
>>  the plate to match the LPRO.
>>
>>
>>
>>  It's not perfect, but it certainly does the job - particularly if you
>>  had a fan blowing through the fins.  The total height is about 1.75"
>>  (45 mm).
>>
>>  But remember, the more you cool the LPRO, the more power it will draw
>>  to keep itself warm so you don't want to overdo the cooling.
>>
>  > Ed
>>
>[snip]
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The aluminum fin and copper pipe assembly integrated with the 
heatsink plate is most likely a heat pipe of some kind, as that's 
what Thermacore makes.  It's a model 2644, from the nameplate, but no 
joy at the Thermacore.com website.

Joe Gwinn



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