Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+amps\s+with\s+vacuum\s+pumps\s*$/: 6 ]

Total 6 documents matching your query.

1. [Amps] amps with vacuum pumps (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 02 May 2012 11:12:10 -0400
Perhaps someone with practical experience can comment on whether it is hard to maintain a 1 PSI vacuum in a vapor system. -- 73, Pete N4ZR The World Contest Station Database, updated daily at www.con
/archives//html/Amps/2012-05/msg00057.html (7,292 bytes)

2. Re: [Amps] amps with vacuum pumps (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Wed, 02 May 2012 11:25:06 -0400
In most cases, heat pipe systems (and that's what one would have with an evacuated vapor system) require a secondary heat exchanger. The low pressure system moves the heat from where it's generated t
/archives//html/Amps/2012-05/msg00058.html (7,658 bytes)

3. Re: [Amps] amps with vacuum pumps (score: 1)
Author: "Gary Schafer" <garyschafer@comcast.net>
Date: Wed, 2 May 2012 11:30:10 -0400
If you are going to go to all that trouble to lower the boiling point why not just use a small air conditioning system with the evaporator as the heat sink. 73 Gary K4FMX ____________________________
/archives//html/Amps/2012-05/msg00059.html (8,889 bytes)

4. Re: [Amps] amps with vacuum pumps (score: 1)
Author: Pete Lancashire <pete@petelancashire.com>
Date: Wed, 2 May 2012 09:48:11 -0700
In a different application I used the guts salvaged from a wall mounted water drinking fountain. It was less then a year old and cost me $25. After I was done I got something like $10 for my scrap de
/archives//html/Amps/2012-05/msg00062.html (9,771 bytes)

5. Re: [Amps] amps with vacuum pumps (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 02 May 2012 13:32:27 -0400
They are sealed systems just like the heat pipes on CPU coolers. Otherwise you'd just end up with the coolant vaporizing and then condensing in the vacuum pump oil. 73 Roger (K8RI) www.rogerhalstead.
/archives//html/Amps/2012-05/msg00067.html (7,370 bytes)

6. Re: [Amps] amps with vacuum pumps (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Wed, 02 May 2012 13:31:09 -0400
They are sealed systems just like the heat pipes on CPU coolers, whether they have water or what ever in the system. Otherwise the material just goes into the pump and condenses in the pump oil. 73 R
/archives//html/Amps/2012-05/msg00115.html (7,639 bytes)

Current List: 1 - 6
Page: [1]
This search system is powered by Namazu