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Performance Evaluation of Boiling Chamber With Enhanced Boiling and Condensing Surfaces for Efficient Warm Water Operation.

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Title: Performance Evaluation of Boiling Chamber With Enhanced Boiling and Condensing Surfaces for Efficient Warm Water Operation.
Authors: Mustafa, Nooruldeen Essam1 nem6557@rit.edu, Kandlikar, Satish G.2 sgkeme@rit.edu
Source: ASME Journal of Heat & Mass Transfer. Apr2026, Vol. 148 Issue 4, p1-10. 10p.
Subjects: Performance evaluation, Condensation, Microchannel flow, Heat flux, Liquid cooled engines
Abstract: Boiling and condensation are integrated within a boiling chamber to cool a heating surface, such as a computer substrate, with cooling water. A finned tube condenser with a total surface area of 48,440 mm² is used, and the effect of different fill ratios (40% and 80%) is studied. The results indicate that the enhanced finned tube condenser performs exceptionally well in improving the overall boiling chamber performance. The enhanced boiling chamber is able to dissipate high heat fluxes from the computer substrates within the operating temperature limits of the substrates with warm water cooling. This enables use of higher coolant inlet temperatures enabling the use of dry cooling towers and reducing water consumption in a data center. With a fill ratio of 40% and coolant inlet temperature of 40 °C, the boiling chamber dissipated a heat flux of 178 W/cm² at a surface temperature of 84 °C. With a lower coolant inlet temperature and a fill ratio of 80%, a heat flux of 177 W/cm² was dissipated with a 20 °C coolant inlet temperature, resulting in the surface temperature of 79 °C. This shows the boiling chamber's ability to outperform even at elevated coolant temperatures. Further, the compact design of the boiling chamber is well-suited for its implementation in data center cooling. [ABSTRACT FROM AUTHOR]
Copyright of ASME Journal of Heat & Mass Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 192362155
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PubType: Academic Journal
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  Data: Performance Evaluation of Boiling Chamber With Enhanced Boiling and Condensing Surfaces for Efficient Warm Water Operation.
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  Data: <searchLink fieldCode="AR" term="%22Mustafa%2C+Nooruldeen+Essam%22">Mustafa, Nooruldeen Essam</searchLink><relatesTo>1</relatesTo><i> nem6557@rit.edu</i><br /><searchLink fieldCode="AR" term="%22Kandlikar%2C+Satish+G%2E%22">Kandlikar, Satish G.</searchLink><relatesTo>2</relatesTo><i> sgkeme@rit.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22ASME+Journal+of+Heat+%26+Mass+Transfer%22">ASME Journal of Heat & Mass Transfer</searchLink>. Apr2026, Vol. 148 Issue 4, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Performance+evaluation%22">Performance evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Condensation%22">Condensation</searchLink><br /><searchLink fieldCode="DE" term="%22Microchannel+flow%22">Microchannel flow</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+flux%22">Heat flux</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid+cooled+engines%22">Liquid cooled engines</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Boiling and condensation are integrated within a boiling chamber to cool a heating surface, such as a computer substrate, with cooling water. A finned tube condenser with a total surface area of 48,440 mm² is used, and the effect of different fill ratios (40% and 80%) is studied. The results indicate that the enhanced finned tube condenser performs exceptionally well in improving the overall boiling chamber performance. The enhanced boiling chamber is able to dissipate high heat fluxes from the computer substrates within the operating temperature limits of the substrates with warm water cooling. This enables use of higher coolant inlet temperatures enabling the use of dry cooling towers and reducing water consumption in a data center. With a fill ratio of 40% and coolant inlet temperature of 40 °C, the boiling chamber dissipated a heat flux of 178 W/cm² at a surface temperature of 84 °C. With a lower coolant inlet temperature and a fill ratio of 80%, a heat flux of 177 W/cm² was dissipated with a 20 °C coolant inlet temperature, resulting in the surface temperature of 79 °C. This shows the boiling chamber's ability to outperform even at elevated coolant temperatures. Further, the compact design of the boiling chamber is well-suited for its implementation in data center cooling. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of ASME Journal of Heat & Mass Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1115/1.4070962
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Performance evaluation
        Type: general
      – SubjectFull: Condensation
        Type: general
      – SubjectFull: Microchannel flow
        Type: general
      – SubjectFull: Heat flux
        Type: general
      – SubjectFull: Liquid cooled engines
        Type: general
    Titles:
      – TitleFull: Performance Evaluation of Boiling Chamber With Enhanced Boiling and Condensing Surfaces for Efficient Warm Water Operation.
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            NameFull: Mustafa, Nooruldeen Essam
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              Text: Apr2026
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              Y: 2026
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              Value: 148
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