Energy and economic assessment of major free cooling retrofits for data centers in Turkey

Authors : Ozan GÖZCÜ, Hamza Salih ERDEN

Pages : 2097-2212

View : 15 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Mechanical cooling is responsible for a significant fraction of the energy consumption of data centers insert ignore into journalissuearticles values(DCs);. Free cooling systems take advantage of ambient conditions to reduce the need for compressor-based cooling. This study utilizes thermodynamic models of major free cooling systems such as the direct air-side economizer insert ignore into journalissuearticles values(ASE);, indirect air-side economizer insert ignore into journalissuearticles values(IASE);, indirect evaporative cooler insert ignore into journalissuearticles values(IEC);, and indirect water-side economizer insert ignore into journalissuearticles values(WSE); integrated with the existing cooling infrastructure of a typical 1 MW IT load DC. Proposed models utilize hourly weather data of various cities in Turkey to compute annual energy consumption and cost-saving potentials of each free cooling method with respect to the baseline DC with both open aisle insert ignore into journalissuearticles values(OA); and enclosed aisle insert ignore into journalissuearticles values(EA);. Results confirm the energy-saving potential by IEC leading to less than 10 % of annual chiller hours across Turkey and less than 1 % in half of the ten cities studied, especially in EA DCs. However, despite greater energy-saving potential, IEC has more extended payback periods of 1.5 to 3.7 years due to the high capital investment compared with those of ASE and WSE with less than 1.4 years.
Keywords : Data centers, Turkey, free cooling, economizer, thermodynamic modeling, cooling infrastructure