jsc2020e030484
jsc2020e030484 (4/20/2020) --- A preflight image sequence from terrestrial experiments with two vertically oriented ratchet surfaces; subcooling: 9.5 ℃; heat flux: 1.31 W/cm2. Asymmetric Sawtooth and Cavity-Enhanced Nucleation-Driven Transport (PFMI-ASCENT) demonstrates a passive cooling system for electronic devices in microgravity using a microstructured surface. When fluids boil over flat heated surfaces in microgravity, vapor bubbles grow larger in size, causing poor heat transfer that can lead to damage of devices. Adding microscopic rachets on the surface may passively enable mobility of vapor bubbles and prevent this damage. (Image courtesy of: Techshot, Inc.)
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Details
NASA ID
jsc2020e030484
Date Created
July 8, 2020
Center
JSC
Media Type
image
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