Energy saving and economic analysis of energy efficiency grade improvement of typical cooling equipment in data centers

This paper presents three typical cooling equipment (free cooling air-cooled chiller,open cooling tower and three-phase asynchronous motor) for data centers and the corresponding national energy efficiency standards and relevant energy-saving policies. The product characteristics of free cooling air-cooled chillers and their peculiarity in the data center cooling system are analysed. The energy saving and economic analyses of cooling equipment with different energy efficiency grades throughout their life cycle are conducted based on practical application scenarios. Finally, relevant recommendations for equipment selection and energy efficiency assessment are provided.