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Re: Liquid Cooled Transmitters
To: CRTech <crtech@crtech.org>
Subject: Re: Liquid Cooled Transmitters
From: Dave Obergoenner <daveobergoenner@gmail.com>
Date: Mon, 18 Sep 2017 18:01:44 -0500
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For us lately, keeping larger A/C units maintained is getting more expensive all the time.

Even though we've recently replaced most of our units with commercial rated (and expensive) Trane units, they still break-down a lot.  Seems like it's mostly the cheap Chinese fan motors that keep failing.  We've asked them to please get something better for replacements, but they say this is all they can get that fits.  Guess who won't get our business again next time.

The good news is, the new air cooled GatesAir xmtrs I've put in lately don't make nearly as much heat...especially in FM only mode.  I'd assume that applies to the liquid cooled ones as well.  Heat exchanger coolant pump and fan requirements for those might not be all that extreme.  Not like the 110kw TV xmtrs I used to have to service.  What a pain...I should have charged them like a plumber!  :-)

The GatesAir folks came to our SBE meeting, and did a presentation on these.  The savings over air conditioning the heat away in a sealed system was pretty dramatic.

Dave O.

On Mon, Sep 18, 2017 at 4:19 PM, Mark Croom <markc@newmail.kinshipradio.org> wrote:
I can see the advantages to exhausting the majority of your heat in the coolant so you don't have to air condition that out instead. Sure the motors take some juice and the heat exchangers take some maintenance, I'm personally intrigued by the idea and would find this worth a cost comparison to figure out whether the initial investment in the cooling system (plus expected maintenance) would exceed the cost of doing the job with air conditioning instead.


On Mon, Sep 18, 2017 at 4:03 PM, Rick Jesse <javajava56@gmail.com> wrote:
Thing to keep in mind is that these increase your need for maintenance attention.  If you fail to keep the exchangers clean of pollen, dust, sand...you get hot VERY fast.

Javajava Radio
Springfield, Missouri, USA
Great Coffee, Station Construction, Incredible Christmas Trees and Phenomenal TOAST!

References: Liquid Cooled Transmitters
(Steve Tuzeneu <stuzeneu@gmail.com>, 14 Sep 2017 14:49:43 -0000)
Re: Liquid Cooled Transmitters
(Don Backus <dbackus2000@me.com>, 14 Sep 2017 15:15:58 -0000)
RE: Liquid Cooled Transmitters
(Mike Shane <mshane@salemomaha.com>, 14 Sep 2017 22:19:42 -0000)
Re: Liquid Cooled Transmitters
(Mark Croom <markc@newmail.kinshipradio.org>, 18 Sep 2017 20:40:17 -0000)
Re: Liquid Cooled Transmitters
(Rick Jesse <javajava56@gmail.com>, 18 Sep 2017 21:03:15 -0000)
Re: Liquid Cooled Transmitters
(Mark Croom <markc@newmail.kinshipradio.org>, 18 Sep 2017 21:20:06 -0000)
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