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 language | English |
|---|---|
| Article number | 034502 |
| Journal | Journal of Heat Transfer |
| Volume | 137 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 17 Dec 2014 |
Keywords
- Leidenfrost
- Thermostat
- droplet
- cooling
- Temperature control
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Profiles
Kei Takashina
- Department of Physics - Senior Lecturer
- Centre for Nanoscience and Nanotechnology
- Condensed Matter Physics CDT
Person: Research & Teaching
Cite this
Cole, A., Jury, B., & Takashina, K. (2014). A Leidenfrost Thermostat. Journal of Heat Transfer, 137(3), [034502]. https://doi.org/10.1115/1.4029238