data center

The need of maximum airtightness is essential in order to ensure that the fire compartment can maintain the required concentration of suppression gas for a specified duration and effectively suppress or extinguish a fire. In Greece there are many facilities with requirements for a high-level protection, but until today, most (if not all) of them have not any integrity test certification. They are complacent by the certifications of the materials applied and the only way to confirm the effectiveness of the room’s integrity is when a fire will take place. 

The paper presents optimization model of the chilled water based data center cooling system. The optimization procedure includes system technological and mathematical model, limiting conditions and optimization criterion, which in this case is annual power consumption minimum. The cooling system model is defined by constant parameters and decision variables and consists of aircooled chiller, independent external freecooling heat exchanger (drycooler), computer room air handling unit (CRAH) and constant flow chilled water system with circulation pump.