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Realization of Practical Vapor Compression Cooling System for Multiprocessor Tower Server

Excerpt

Recent years, with adoption of large numbers of multi-core processors, the problem on thermal management is becoming more and more intractable, which also puts an ever higher burden on energy consumption. Therefore, it is necessary to find some advanced cooling strategies to solve this urgent trouble. Among various newly emerging cooling methods, vapor compression refrigeration has considerable advantages over other cooling methods in terms of performance, efficiency, reliability and maturity. In this study, a vapor compression refrigeration system with highly practical purpose was fabricated to cool two dual-core processors (each thermal design power is 89W) in a tower server. A special evaporator cold plate was designed to guarantee that the two processors obtain the same cooling condition, so as to reduce the temperature difference between them. In addition, thermal insulation methods were applied to prevent dewing on the evaporator cold plate. The test results show that the system has achieved high performance (Tcasemax<37°C, COPmax=2.23) as expected. Exergy evaluation supports the promising future of the present energy saving approach in thermal management of a high performance computer. This is the first practical application on cooling a multiple-server with refrigeration system.

  • Abstract
  • Nomenclature
  • Introduction
  • Components Design and System Fabrication
  • Results and Discussion
  • Conclusions
  • Acknowledgments
  • References

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