Abstract
The recent expansion of the internet network and rapid advancements in information and communication technology are expected to lead to a significant increase in power consumption and the number of data centers. However, these data centers consume a considerable amount of electric power all year round, regardless of working days or holidays; thus, energy saving at these facilities has become essential. A disproportionate level of power consumption is concentrated in computer rooms because air conditioners in these rooms are required to operate throughout the year to maintain a constant indoor environment for stable operation of computer equipment with high-heat release densities. Considerable energy-saving potential is expected in such computer rooms, which consume high levels of energy, if an outdoor air-cooling system and air conditioners are installed. These systems can reduce the indoor space temperature by introducing a relatively low outdoor air temperature. Therefore, we studied the energy-saving effect of introducing an outdoor air-cooling system in a computer room with a disorganized arrangement of servers and an inadequate air conditioning system in a research complex in Korea. The findings of this study confirmed that annual energy savings of up to approximately 40% can be achieved.
Highlights
In 2018, there were 145 data centers [1] in Korea
This disproportionate amount of power consumption is concentrated in the computer room because the air conditioners operate throughout the year to maintain a constant indoor environment for stable operation of the computer equipment with a high-heat release density
If an outdoor air-cooling system and air conditioners are installed to cool the indoor space by introducing a relatively low outdoor air temperature, a considerable degree of energy saving is expected in a computer room with high-energy consumption
Summary
In 2018, there were 145 data centers [1] in Korea. The annual power consumption in these data centers in 2016 was approximately 2.8 billion kWh, representing 1% of the industrial power consumption of 280 billion kWh [2]. In the computer room, for the baseload time zones such as midnight, the power consumed is 98% in the summer, 99.1% in the mid-season, 98.7% in the winter, and 99% during holidays, regardless of the season, indicating that a significant amount of electric energy is consumed throughout the year, regardless of weekdays or weekends [3,4] This disproportionate amount of power consumption is concentrated in the computer room because the air conditioners operate throughout the year to maintain a constant indoor environment for stable operation of the computer equipment with a high-heat release density. This study, weIninvestigated effect of introducing an outdoor air-cooling outdoor air-cooling system in the of a research in Korea witharrangement a disorganized system in the computer room of computer a researchroom complex in Koreacomplex with a disorganized of arrangement of servers and inadequate air conditioning system.
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