Energy efficiency evaluation of indirect evaporative cooling air conditioning system in data centers

Abstract

Aimed at the difficulty of accurately reflecting the actual effect of the engineering application of the data center's energy consumption evaluation results. This paper, on the basis of the existing data center energy efficiency evaluation index, from the data center, data center air conditioning system, indirect evaporative cooling air conditioning equipment in three dimensions, respectively, put forward the data center indirect evaporative cooling air conditioning PUE coefficient, data center air conditioning energy utilization efficiency, indirect evaporative cooling air conditioning equipment refrigeration density and other evaluation indicators. By using the new evaluation indexes as well as the assignment analysis method, case studies were conducted on data centers with different cooling systems. The results show that the indirect evaporative cooling air-conditioning system has obvious advantages of power and water saving compared with the traditional chilled water system, but its refrigeration density index still has much room for improvement. The proposal of the new index improves the energy efficiency evaluation system of data centers and can lead to further improvement of the performance quality of related air conditioning products.

Keywords

• data center
• indirect evaporative cooling
• air conditioning systems
• case study
• energy efficiency evaluation