A Leidenfrost Thermostat

Alexander Cole, Benjamin Jury, Kei Takashina

Research output: Contribution to journalArticle

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

Keywords

  • Leidenfrost
  • Thermostat
  • droplet
  • cooling
  • Temperature control

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