The next generation green data center: A multi-objective energetic analysis for a traditional and CCHP cooling system assessment

During the last years the cloud computing is growing up seriously in everyday business activities. Besides the continuous and fast evolution of the IT services, the data centers scales, the power consumption and the high standard reliability levels are rising suddenly. Actually in the technologically advanced countries the Data Centers are consuming closely 1.5 to 3.0 percent of the energy produced and its energy consumption is forty times more than a conventional office. Analyzing the traditional air conditioning systems (HVAC) the highest equipment power-consumption are the chillers, cooling towers, water pumps, circulation fans and the largest fraction of total energy consumption of HVAC has been represented by the chillers In order to reduce the power consumption different techniques are used; one of this is the free cooling. This method is to compare the outside air conditions with the specified set points, and pulling the outside air directly inside by the airside economizers. Beside the traditional cooling structures, the CCHP(Combined Cooling and Heating Power) systems are entering the limelight. The term tri-generation refers to the jointing production of the electrical, heat and cooling energy This paper focuses the attention on a multi-objective energy assessment among the traditional air conditioning structures (HVAC) and the CCHP systems coupled with the Closed Circuit Cooling Towers(CCCTW).