Method of controlling cooling in server room and system implementing thereof

An air flow control method for cooling a data center comprising a server room, the server room comprising a first chamber and a second chamber partitioned therebetween by a server rack and being in fluid communication therebetween via the server rack, the first chamber having an air inlet fluidly coupled to an outside area of the server room, the second chamber having an air outlet fluidly coupled to the outside area, the method being executable by a controller unit coupled to:

• an inlet fan configured to flow air from the outside area into the first chamber at different speeds, via the air inlet;
• an outlet fan configured to flow air from the second chamber into the outside area at different speeds, via the air outlet;
• a first differential pressure gauge configured to measure a first differential pressure value of an air pressure of the first chamber relative to an air pressure of the outside area;
• a second differential pressure gauge configured to measure a second differential pressure value of an air pressure of the second chamber relative to the air pressure of the outside area;
• the method comprising:
• receiving the first differential pressure value from the first differential pressure gauge;
• receiving the second differential pressure value from the second differential pressure gauge;
• in response to one of the first differential pressure value and the second differential pressure value not matching its respective first and second target value, generating a control signal to adjust the speed of an associated one of the inlet fan and the outlet fan;
• and
• transmitting the control signal to the associated one of the inlet fan and the outlet fan.

An air flow control system for cooling a data center comprising a server room, the server room comprising a first chamber and a second chamber partitioned therebetween by a server rack and being in fluid communication therebetween via the server rack, the first chamber having an air inlet fluidly coupled to an outside area of the server room, the second chamber having an air outlet fluidly coupled to the outside area, the system comprising:

• an inlet fan configured to flow air from the outside area into the first chamber at different speeds, via the air inlet;
• an outlet fan configured to flow air from the second chamber into the outside area at different speeds, via the air outlet;
• a first differential pressure gauge configured to measure a first differential pressure value of an air pressure of the first chamber relative to an air pressure of the outside area;
• a second differential pressure gauge configured to measure a second differential pressure value of an air pressure of the second chamber relative to the air pressure of the outside area;
• a controller unit coupled to the inlet fan, the outlet fan, the first differential pressure gauge, and the second differential pressure gauge, the controller unit comprising a processor configured to:
• receive the first differential pressure value from the first differential pressure gauge;
• receive the second differential pressure value from the second differential pressure gauge;
• generate a first control signal to adjust the speed of the inlet fan based on the first differential pressure value;
• generate a second control signal to adjust the speed of the outlet fan based on the second differential pressure value;
• transmit the first and second control signals to the respective inlet and outlet fans to adjust the first differential pressure value to a first target value, and adjust the second differential pressure value to a second target value, the first target value being above the second target value, thereby maintaining a flow of air from the first chamber to the second chamber.