Patent ID: 8914155

Claim:
A method to control fluid flow in a data center, the method comprising: obtaining a sensed pressure of a fluid in a first contained aisle on a first side of data center equipment, the fluid in the first contained aisle to be exhausted by the data center equipment into a second contained aisle on a second side of the data center equipment; controlling an actuator of a vent to cause the vent to adjust a first fluid flow in a direction from the second contained aisle to the first contained aisle based on the sensed pressure; and responsive to determining that a target fluid pressure for the first contained aisle has been met by (1) controlling the actuator of the vent to increase the first fluid flow in the direction from the second contained aisle to the first contained aisle, but (2) without controlling operation of a flow source providing the fluid to the first contained aisle, subsequently adjusting an operation of the flow source to improve flow source operating efficiency.