Air-cooled heat generating device airflow control system

A room comprising:

• heat generating devices containing heat generating components;
• an air conditioning unit configured to cool the heat generating components by cooling airflow in the room;
• and
• at least one cooling system comprising heat exchangers positioned adjacent to at least one of the heat generating devices such that the at least one cooling system is configured to cool airflow around the at least one heat generating devices to thereby supplement the cooling performed by the air conditioning unit, wherein the heat exchangers are positioned along individual cooling fluid lines and wherein a valve is positioned along each of the individual cooling fluid lines, said at least one cooling system further comprising a controller configured to control the valves to independently vary cooling fluid flow through each of the heat exchangers.

A system for controlling airflow around an air-cooled heat generating device having components, said system comprising:

• a cooling fluid line containing a chilled fluid;
• heat exchangers positioned along the cooling fluid line to cool airflow around the components in the heat generating device, wherein the heat exchangers are positioned adjacent to the heat generating device such that the heat exchangers are directly in the path of at least one of airflow supplied into the components and airflow exhausted from the components;
• valves positioned along the cooling fluid line to control cooling fluid flow through respective heat exchangers;
• a secondary heat exchanger configured to absorb heat from the cooling fluid, the secondary heat exchanger comprising a refrigeration loop through which a refrigerant flows, wherein the secondary heat exchanger includes an evaporator positioned along the refrigeration loop, and wherein heat is transferred from the chilled fluid to the refrigerant in the evaporator;
• and
• a controller configured to control the valves to control the cooling fluid flow through the heat exchangers.