Cooling system with reduced pressure drop

A cooling system comprising:

• a cooling device including a first cooling coil and a second cooling coil;
• a first heat transfer fluid flowing through the first cooling coil;
• a second heat transfer fluid flowing through the second cooling coil;
• a first heat exchanger in fluid communication with the first heat transfer fluid and the second heat transfer fluid;
• a second heat exchanger in fluid communication with the second heat transfer fluid and a source of external air;
• a system of fluid control devices in fluid communication with the second heat transfer fluid;
• and
• a controller configured to selectively control the cooling device and the system of fluid control devices to operate the cooling system in a plurality of operating modes, wherein the plurality of operating modes controls one or more operating parameters of the system of fluid control devices,
• wherein the controller is configured to operate the system of fluid control devices to minimize a change in a total pressure drop of the second heat transfer fluid when the cooling system switches between the plurality of operating mode, and
• wherein the system of fluid control devices is configured to maintain at a fixed pump speed when the cooling system switches between operating modes, wherein a flow variation of the second heat transfer fluid varies by less than about 15% between the operating modes.

A non-transitory computer-readable medium containing thereon instructions for a cooling system including a cooling device having a first cooling coil, a second cooling coil, a first heat transfer fluid flowing through the first cooling coil, a second heat transfer fluid flowing through the second cooling coil, a first heat exchanger in fluid communication with the second heat transfer fluid and a source of external air, and a system of fluid control devices in fluid communication with the second heat transfer fluid, the instructions instructing at least one processor to:

• operate the cooling system in a plurality of operating modes, wherein the plurality of operating modes control one or more operating parameters of the system of fluid control devices;
• operate the system of fluid control devices to minimize a change in a total pressure drop of the second heat transfer fluid when the cooling system switches between the plurality of operating modes;
• and
• operate the cooling system to minimize an absolute difference in a total pressure of the cooling system when the cooling system changes modes within the plurality of operating modes, the absolute difference in the total pressure of the cooling system being a difference in the operating pressure in one mode and operating pressure in another mode.

A non-transitory computer-readable medium containing thereon instructions for a cooling system including a cooling device having a first cooling coil, a second cooling coil, a first heat transfer fluid flowing through the first cooling coil, a second heat transfer fluid flowing through the second cooling coil, a first heat exchanger in fluid communication with the second heat transfer fluid and a source of external air, and a system of fluid control devices in fluid communication with the second heat transfer fluid, the instructions instructing at least one processor to:

• operate the cooling system in a plurality of operating modes, wherein the plurality of operating modes control one or more operating parameters of the system of fluid control devices;
• operate the system of fluid control devices to minimize a change in a total pressure drop of the second heat transfer fluid when the cooling system switches between the plurality of operating modes;
• and
• operate the system of fluid control devices to maintain at a fixed pump speed when the cooling system switches between operating modes, wherein a flow variation of the second heat transfer fluid varies by less than about 15% between the operating modes.