LIQUID COOLING CERTIFICATION

In a Liquid Cooling environment: There is a natural point of rack density where cooling ceases at about ___________-__________KW per rack

In a liquid cooling environment what is the response to removing more heating?

Graphic computational unit (GPU) and computer processing unit (CPU).  The graphical processing unit (GPU) spot heat transfer is called _______,and also handle operations in parallel and thus works well with AI.

The ____  ______ is the device that allows liquid cooling direct to a smaller loop for liquid cooling, or cold plates within the sever racks and to the devices themselves they call a CDU: coolant distribution unit. They are connected to various components.

In liquid cooling they use terminology in acronym form such as the following: What do they mean? 
CWS?
FWS?
TCS?

The heat plate where all the heat is collected. It is important to know that not all the heat is rejected to the liquid and is also shared to the conditioned air space.  _____-_____% is rejected to liquid and the rest is rejected to the air space.

What.... in a liquid cooling data center provides the cooling loop to the CDU (cooling distribution unit)?

What typically in a liquid cooling data center collects and rejects heat?   Not what is responsible for transferring heat from surfaces with high heat loads to the fluid used within a liquid cooling system.

The performance of this is critical in defining the overall effectiveness of a liquid cooling system in a data center.

Test engineers will run multiple cooling capacity tests to make sure the liquid cooling system delivers expected performance at various heat loads. The result will be presented in a performance graph showing?

For Liquid Heat Exchangers, temperature differential (ΔT) for performance graph is calculated by?

For Liquid Chillers, performance is graphed as

An AI rack might have 50KW and 40KW to the liquid system and 10KW of that total amount is rejected to the air. The rack KW today is usually ____-_____KW per rack.

What is the difference between room cooling and liquid cooling regarding components?

In liquid cooling, Cold Plate: GPU and CPU are producing most of the heat but the channels within the cold plate run about 150Microns for cooling and filtration is about 50microns and we want those to be about half the width of the channels.  What is normal for the cooling temps on these channels in F?

The following statement represents what? Flow rates are 1 gallon every 4 seconds leaving the rack.

If glycol is used with the liquid cooling system that means that what is required? And what % of the liquid cooling system is typically glycol?

What is the amount of KW heat rejected to the air from a liquid cooling system at 100KW per rack?

In a liquid cooling system, these are manufactured as leak proof and water proof and cannot be seen when plugging them in.  They are called blind mates. What are they?

What is required when filling the GPU units (racks) when using liquid cooling?

What is required for overhead manifolds?

In a liquid cooling data center what equipment type is explained using the following description? ________ serves as an interface to secondary heat exchange (plates, etc.) and the chiller itself.  Chillers are at 150PSI and cold plates are typically pressure rated within single digits. The ______ has a controller with its own pump that controls that flow rate precisely as it flows into the cold plate and are generally liquid to liquid.    Some are liquid to air

If someone says this is installed in a row next to liquid cooled racks in a liquid cooled data center that exhaust to hot aisles this would tell you what about the design?

All you need is space and capacity to install the __________.  You do not need chilled water at all for this retrofit and can greatly increase capacity within that data center.

This is described as (smaller retrofit) one fluid loop entry and exits within a rack.  That means the CDU feeds into the bottom and into the manifold and the secondary loop to the chiller plant goes out of the top of the rack.

This describes what is a liquid cooling data center? ________heats up to 85-90F as it runs through the servers and then gets knocked back down to what it was coming in. These are more often than not fan assisted on the doors so that we can not have to rely on the server fans.  It is recommended to provide fans additionally to assist server fans.

In a liquid cooling data center, these are meant to work with existing sites.  The compressors, heat exchanger, is in the space itself.   Vertiv has a product that can allow a retrofit of an existing DSE (data service environment) and gets replaced by the Liebert XDM250 to provide cooling to the cold plate itself without the CDU in the middle.    Can you turn over a portion of an existing space to liquid cooling?  Now you can.

Identify some critical questions to ask when assessing for liquid cooling within a space?

What are the most common types of liquid cooling solutions?