Extension about the innovation revolution about the evolution of unusual server hardware cooling systems. Photo details of the second version of the cooling system installed on a real server rack in a real DataPro data center. And also - an invitation to feel the third version of our cooling system with your own hands. September 12, 2019 in Moscow.
Server LTTs. Version 2
The main claim to the first version of the cooling system was its mechanics. For some reason, in the comments to the previous article with this photo:
... no one paid much attention to the fact that access to the entire right side of the rear panel of the server becomes almost impossible. Only one observant reader suggested alternating left-right placement of our fasteners.
The need to use such a monstrous fastener was caused by the desire to do without thermal paste at the point of attachment of the heat exchanger coming out of the server to the vertical liquid bus. Thermal paste in such a detachable connection is highly undesirable. And so that you can not use it, you need to develop a significant clamping force.
In the second version, we used a different fastening system. The tire has become much more compact. And it has acquired a less “made in ussr” appearance.
There are even shiny design elements. Stylish trendy youth.
In addition to the huge mechanics, the first version did not answer the questions of protecting servers from the (theoretically) possible situation of depressurization of the vertical liquid bus. The answer to such questions in the second version of our system was a protective cover.
A step back in compactness. Step forward in safety. Now, even theoretically, no one can be doused with ethylene glycol, which is filled with an external heat exchange circuit.
The system connected properly. Without large flexible eyeliners, as it was before. This design is not going anywhere. Even though it's on wheels. The pipes run directly under the server rack, in the raised floor of the data center.
There was still almost a meter and a half of space in height and depth. There is a place for entertainment.
The design of the LTT inside the server has not undergone any significant changes. In the last post, we were stingy on the photo of the inside. Let's try to fix it now.
This is how the server with our cooling system pulled out of the rack looks like. Regular radiators are replaced by our system. Some of the fans have been removed.
Copper heatsinks are attached to the processors. The cylinders inside the radiators are the evaporators of the loop heat pipes.
From the evaporators, thin tubes go to the back of the server.
They pass through the back wall and form capacitors.
Which are pressed against the vertical liquid bus when the server is pushed into the rack.
Thus, the heat from the server processors through the loop heat pipes exits the server volume to the external liquid heat exchanger, and through it it exits the data center building volume to outdoor cooling systems.
CTT not only in data centers
In addition to cooling solutions for large data centers, we also deal with cooling solutions for "office" server systems - micro data centers.
Many companies experience problems such as "our servers are too noisy" or "it's too hot to walk past the server room." Often such problems look unsolvable using traditional technologies.
We will tell you more about one of these solutions - the all-in-one micro data center - tomorrow in the next article. And anyone can feel this product with their hands this week, September 12, 2019 in Moscow.
For those who are interested in the topic of cooling (including server) computer equipment, I remind you about our social networks и .
Source: habr.com