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Wicking assisted condenser platform with patterned wettability for space application.

Tibin M Thomas1, Pallab Sinha Mahapatra2

  • 1Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.

Scientific Reports
|October 23, 2023
PubMed
Summary
This summary is machine-generated.

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This study presents a novel plate-type condenser that passively removes condensate from horizontal surfaces without gravity. Engineered wettability guides condensate migration, enhancing heat transfer for space applications.

Area of Science:

  • Thermodynamics
  • Heat Transfer
  • Materials Science

Background:

  • Vapor condensation is crucial for heat exchange and phase conversion.
  • Conventional condensers rely on gravity for condensate removal, limiting their use in space or horizontal orientations.
  • Passive condensate removal is needed for microgravity and specialized applications.

Purpose of the Study:

  • To demonstrate a proof-of-concept for a novel plate-type condenser platform.
  • To achieve passive condensate removal from a horizontally oriented surface without gravity.
  • To investigate condensation dynamics and heat transfer performance on engineered surfaces.

Main Methods:

  • Engineered a plate-type condenser with patterned wettabilities (superhydrophobic to superhydrophilic areas).

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  • Investigated condensation dynamics and condensate migration driven by surface energy gradients.
  • Compared condensation heat transfer performance across different wettability patterns.
  • Utilized a surrounding wicking reservoir for continuous condensate absorption.

    • Main Results:

    • Demonstrated passive, gravity-independent condensate removal from a horizontal surface.
    • Engineered wettability patterns facilitated continuous condensate migration to the edges.
    • Condensate migration from superhydrophobic to superhydrophilic areas rejuvenated nucleation sites, enhancing heat transport.
    • Achieved improved condensation heat transfer performance through engineered wettability.

    Conclusions:

    • The novel plate-type condenser successfully achieves passive condensate removal on horizontal surfaces.
    • Engineered wettability is a key factor in enhancing condensation heat transfer and enabling gravity-independent operation.
    • This technology holds potential for temperature and humidity management in space applications.