<div dir="auto">Hi there,<div dir="auto"><br></div><div dir="auto">I am not sure I understand which cooling loop you are talking about. Because at the end of the day, the final loop will (almost) always be an air-cooled loop. Example, if your local loop is cooled down by the building chilled water, then the chiller of the building is most probably cooled down by air. There are only a few systems which do not use air to cool down the last loop, such as the computing cluster in Frankfurt, Germany which is eventually cooled down by the river (if I remember correctly).</div><div dir="auto"><br></div><div dir="auto">I would rather look at the cooling power each system can deliver. The air cooling system has the great advantage of being fully independent. If there is an issue with the chilled water of the building, you can still operate your microscope. During my PhD we had a system where the Neslab could be either air or water-cooled. This might also be an interesting solution to look at.</div><div dir="auto"><br></div><div dir="auto">Cheers,</div><div dir="auto">Sylvain<br><br><div data-smartmail="gmail_signature" dir="auto">PhD<br>Research Fellow - Microscopy Australia<br><br>Monash University<br><br>Ramaciotti Centre for Cryo-EM<br>G92, 15 Innovation Walk, Clayton Campus<br>Victoria, 3800 Australia</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 30 June 2023, 5:06 pm Johanna Höög, <<a href="mailto:johanna.hoog@gu.se">johanna.hoog@gu.se</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Same here! We had an air cooled chiller that we had to replace with a water cooled one because it could not chill enough (in Sweden). For us, the room where the chiller was placed was too small and the air-con system could not remove the heat fast enough so
the whole room heated up. We then had to replace many water cooled chillers because our cooling water was not clean enough and clogged up the system, but that is another story..
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<div>Best wishes, </div>
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<div>Johanna <br>
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<div>On 29 Jun 2023, at 17:05, Reinhard Rachel <<a href="mailto:Reinhard.Rachel@biologie.uni-regensburg.de" target="_blank" rel="noreferrer">Reinhard.Rachel@biologie.uni-regensburg.de</a>> wrote:</div>
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<div dir="auto">Water-cooled chiller.
<div>I would never choose / use an air-cooled chiller, again. (Ok, I am out anyway, due to retirement…).</div>
<div>We even had been going through the phase of changing an air-cooled version into a water-cooled system - upgrading it. We had hot summer days , no, even weeks (in cold Germany), where the capacity of the air-cooled system was insufficient. Resulting in
the shut-down of chiller plus TEM (120 kV!), for two weeks.</div>
<div>Kind regards </div>
<div>Reinhard <br>
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<div dir="ltr">Von meinem iPhone gesendet</div>
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<blockquote type="cite">Am 29.06.2023 um 16:43 schrieb Morgan, David Gene <<a href="mailto:dagmorga@indiana.edu" target="_blank" rel="noreferrer">dagmorga@indiana.edu</a>>:<br>
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Hi,</div>
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We are installing a new high-end instrument here and the issue of whether to use an air- or water-cooled chiller has arisen. I've always been in favor of water-cooled chillers and at least some of the places where I have worked did not have the capacity to
remove the excess heat that an air-cooled chiller would generate. For this install, we appear to have a choice.<br>
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Is there a general consensus about which is better?<br>
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