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Overview of Liquid Cooling Systems

Overview of Liquid Cooling Systems. Peter Rumsey, Rumsey Engineers. Outline. • What is liquid cooling? • Energy Benefits • What is water side economizer • Combined benefits. Why Liquid Cooling?. Heat Capacity of this much air. =. Heat Capacity of this much water.

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Overview of Liquid Cooling Systems

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  1. Overview of Liquid Cooling Systems Peter Rumsey, Rumsey Engineers

  2. Outline • • What is liquid cooling? • • Energy Benefits • • What is water side economizer • • Combined benefits

  3. Why Liquid Cooling? Heat Capacity of this much air = Heat Capacity of this much water

  4. Fans move energy less efficiently

  5. Liquid Cooling • Closer coupling between cooling source and server

  6. Liquid Cooled Racks • Racks with integral coils

  7. Yesterday

  8. Today

  9. Comparison of Conventional Cooling to Liquid Cooling – 1,000 kW data center load

  10. Free Cooling • Use cooling towers and heat exchanger to produce chilled water • Turn off chiller

  11. Three – Well Suited For 24 hr Load

  12. Put in series with chiller free cooling can improve reliability

  13. Free Cooling

  14. Comparison of Conventional Cooling to Liquid Cooling – 1,000 kW data center loadWith Free Cooling

  15. Take Aways • Liquid has greater heat removal capacity • Pumps are more efficient than fans • Coupling heat removal to the source eliminates mixing • Commercially available liquid solutions are available • Water side free cooling provides cooling with reduced chiller operation for much of the year in California

  16. Thank You prumsey@rumseyengineers.com

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