[3dem] Cooling water supply for microscopes

[Terje Dokland]

Hi Liz,
basically you have two options: a stand-alone air-cooled system or a  
water cooled system, which depends on the house chilled water supply.

Air cooled systems are noisy and generate a lot of heat, but that's  
ok if you can put it in a separate room that has sufficient  
ventilation. It should be quite reliable. I previously had this kind  
of system in Singapore and it ran for years without a problem.

FEI recommended that we install a water-cooled system. It's quieter  
and maybe more energy-efficient (certainly doesn't generate much  
heat) and may potentially be more stable. But if the house water  
supply is interrupted the microscope will shut down. It has happened  
to us several times in the past and is of course a nuisance. You may  
want to check how stable your house chilled water supply is.

The actual water cooling the microscope is of course a closed loop in  
either case.

Terje


On Sep 24, 2009, at 2:01 PM, Wright, Elizabeth R. wrote:

> Hello,
>
> We are in the process of renovating and relocating some microscopes  
> within our EM facility .  As part of the process, we are exploring  
> options concerning the cooling water supply for the microscopes  
> (TEMs and SEMs).  One suggestion from our facilities management  
> group, in order to decrease water consumption and be more  
> sustainable, is to ‘tap into’ the University’s chilled water supply  
> and develop a closed loop system.  Any advice or recommendations  
> would be greatly appreciated.
>
> Thank you for your help.
>
> Sincerely,
>
> Liz
>
>
>
> ----
> Elizabeth R. Wright, PhD
> Assistant Professor
> Emory University School of Medicine
> 2015 Uppergate Dr., NE Room 548
> Atlanta, GA 30322
>
> Phone: 404-727-4665
> E-mail: erwrigh at emory.edu
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