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Here we present a Leidenfrost rotor, where a solid component is coupled to a rotating liquid volume using surface tension and levitated in continuous operation over a turbine-inspired substrate. We address two key challenges: we show how the liquid can be replenished to achieve the continuous operation of the device; and we show how a superhydrophobic coating to the substrate can broaden the temperature range of operation and the stability of the rotor. Because the liquid acts as a working substance by extracting heat from the substrate to produce useful work in the form of rotation of the coupled solid component, our results demonstrate that a Leidenfrost engine operating in a closed thermodynamic cycle is possible.
- Heat transfer
- heat engine
- thin-film boiling
- vapor bearing
FingerprintDive into the research topics of 'Leidenfrost heat engine: Sustained rotation of levitating rotors on turbine-inspired substrates'. Together they form a unique fingerprint.
- 1 Finished
1/09/17 → 30/11/20
- 1 Abstract
Agrawal, P., Wells, G. G., Ledesma-Aguilar, R., McHale, G., Buchoux, A., Sefiane, K., Stokes, A., Walton, A. & Terry, J., 23 Nov 2019.
Research output: Contribution to conference › Abstract › peer-reviewOpen AccessFile