Airside economizer system design for it cluster

A method for operating a cooling system for data center, the cooling system including a plurality of blowers, a plurality of motorized louvers, a heat exchanger, and an air filter, the method comprising:

• setting a plurality of operational modes, wherein each operational mode includes activation setting for the plurality of blowers and the plurality of louvers, the operational modes including:
• a direct mode wherein the heat exchanger is deactivated and the plurality of blowers and plurality of louvers are activated to deliver ambient air to the load;
• an indirect mode wherein the heat exchanger is activated and the plurality of blowers and plurality of louvers are activated to deliver ambient air to the heat exchanger;
• a mixing mode, wherein the heat exchanger is deactivated and the plurality of blowers and plurality of louvers are activated to mix ambient air with recirculated air;
• the method further comprising:
• determining ambient air temperature, humidity and quality and activating one of the operational modes according to the determined ambient air temperature and ambient air quality.

An airside economizer cooling system for data center, the system configurable and operable in different modes according to ambient air temperature and ambient air quality, the system comprising:

• a mixing module, an evaporative cooling module, and an air supply module, attached to each other and having air passages there-between;
• a plurality of blowers, each attached to one of the mixing module, the evaporative cooling module, and the air supply module;
• a plurality of motorized louvers, at least one louver attached to each one of the mixing module, the evaporative cooling module, and the air supply module;
• a heat exchanger positioned within the evaporative cooling module;
• return air channel having fluid opening to the mixing module;
• and,
• a controller receiving ambient air data and using the ambient air data to control the cooling system to alternatingly operate in one of:
• direct mode delivering ambient air directly to the load, indirect mode delivering ambient air to the heat exchanger, mixing mode delivering ambient air to mix with return air delivered by the return air channel, and hybrid mode delivering ambient air partly to the heat exchanger and partly to the load.