STUDI EKSPERIMENTAL PERBANDINGAN KINERJA PENDINGINAN IMERSI DAN UDARA UNTUK DATA CENTER
Abstrak
The efficiency with conventional air cooling systems in controlling surplus heat has reached its limits due to the growing computing load in data centers. On a server with a 100% workload, this study compares the thermal performance and energy efficiency of air cooling and single-phase immersion cooling systems. An experimental test utilized Shell S3X dielectric fluid at a steady flow rate of 1.75 LPM to simultaneously cool an Intel Xeon E-2336 CPU and an Nvidia RTX A400 GPU. The findings demonstrate that immersion cooling significantly lowered operating temperatures by 17.50% for the GPU from 80.0 °C to 66.0 °C and by 35.53% for the CPU from 76.0 °C to 49.0 °C. This performance improvement is caused by a large increase in the convective heat transfer coefficient of up to 157.37% compared to conventional air cooling, which directly reduces the system's thermal resistance by up to 60.81%. In terms of energy efficiency, immersion cooling achieved a Power Usage Effectiveness score of 1.04, compared to 1.69 for the air system, and a Cooling Performance Index of 15.76.
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