A Leidenfrost Thermostat

Alexander Cole, Benjamin Jury, Kei Takashina

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

A simple thermostat based on self-propelled Leidenfrost droplets is proposed and demonstrated. The proof-of-principle device sits on a heated hotplate, which provides the heat, but under dripping water which cools it. Using temperature dependent directionality of droplets on a substructured sawteeth surface, droplets are either discarded or fed into a region with high Leidenfrost temperature and enhanced heat-loss. The system can therefore adjust how much of the droplets’ cooling power it uses depending on its own temperature, and this feedback enables it to maintain a constant set temperature and act as a thermostat.
Original languageEnglish
Article number034502
JournalJournal of Heat Transfer
Volume137
Issue number3
DOIs
Publication statusPublished - 17 Dec 2014

Fingerprint

Thermostats
thermostats
heat
Temperature
temperature
Heat losses
Cooling
Feedback
cooling
Water
water

Keywords

  • Leidenfrost
  • Thermostat
  • droplet
  • cooling
  • Temperature control

Cite this

A Leidenfrost Thermostat. / Cole, Alexander; Jury, Benjamin; Takashina, Kei.

In: Journal of Heat Transfer, Vol. 137, No. 3, 034502, 17.12.2014.

Research output: Contribution to journal › Article

Cole, A, Jury, B & Takashina, K 2014, 'A Leidenfrost Thermostat', Journal of Heat Transfer, vol. 137, no. 3, 034502. https://doi.org/10.1115/1.4029238
Cole A, Jury B, Takashina K. A Leidenfrost Thermostat. Journal of Heat Transfer. 2014 Dec 17;137(3). 034502. https://doi.org/10.1115/1.4029238
Cole, Alexander ; Jury, Benjamin ; Takashina, Kei. / A Leidenfrost Thermostat. In: Journal of Heat Transfer. 2014 ; Vol. 137, No. 3.
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AB - A simple thermostat based on self-propelled Leidenfrost droplets is proposed and demonstrated. The proof-of-principle device sits on a heated hotplate, which provides the heat, but under dripping water which cools it. Using temperature dependent directionality of droplets on a substructured sawteeth surface, droplets are either discarded or fed into a region with high Leidenfrost temperature and enhanced heat-loss. The system can therefore adjust how much of the droplets’ cooling power it uses depending on its own temperature, and this feedback enables it to maintain a constant set temperature and act as a thermostat.

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