| 논문명 |
국내 데이터센터의 에너지효율 기준 및 성능 평가 체계 구축을 위한 연구 / Development of Energy Efficiency Standards and Performance Evaluation Framework for Data Centers in Korea |
| 수록사항 |
설비공학논문집, Vol.38 No.6 (2026-06) |
| 주제어 |
데이터센터 ; 에너지 효율 기준 ; 에너지정책 ; 설비인프라 ; 기계부하요소 ; 전력사용효율 ; Data center ; Energy efficiency standards ; Energy policy ; Facility infrastructure ; MLC ; PUE |
| 요약1 |
The rapid growth of artificial intelligence and cloud computing has significantly increased energy consumption in data centers, raising concerns about power system stability and carbon reduction. In Korea, data centers are primarily assessed using general building energy frameworks, which fail to capture their distinct energy consumption patterns driven by IT loads, cooling systems, and power infrastructure. This study aims to develop a tailored energy efficiency framework for domestic data centers by integrating international best practices with local conditions. We review major international standards, including ASHRAE Standard 90.4, ISO/IEC 30134, the EU Code of Conduct, and the Singapore Green Data Centre framework, to identify relevant principles. Based on this analysis, we propose a three-axis framework that includes design-stage compliance, operational performance evaluation, and management measures. Minimum design-stage requirements are established using Mechanical Load Component (MLC) and Electrical Loss Component (ELC), while Power Usage Effectiveness (PUE) is utilized as the primary operational performance indicator. This framework provides a practical foundation for developing domestic data center energy efficiency standards and facilitating systematic energy management. |
| 요약2 |
This study examines the thermal stratification characteristics of a water-based thermal energy storage (TES) tank under various charging directions and flow rate conditions. A lab-scale TES system was designed using Froude similarity, based on a prototype intended for integration with a 1000RT heat pump system. We conducted experiments and CFD simulations using a 2-D axisymmetric model (Ansys Fluent) to validate thermal behavior and assess stratification performance. Charging tests were performed for both top-to-bottom and bottom-to-top configurations at flow rates of 127 LPM and 215 LPM. The results indicated that top charging effectively maintained a distinct thermocline region, with a Richardson number up to five times higher than that of bottom charging, demonstrating stronger stratification. While increased flow rates accelerated charging, they also weakened stratification due to enhanced momentum effects. The discharging tests confirmed that the outlet temperature remained stable at 43℃ for the designed discharging duration before beginning to decrease. These findings underscore the importance of inlet design and flow control in enhancing TES tank performance and sustaining thermal stratification. |
