Journal
APPLIED THERMAL ENGINEERING
Volume 160, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2019.114062
Keywords
Heat sink; Thermoelectric; Peltier; Alopecia; Cryotherapy
Funding
- Australian Government's Research Training Programme (RTP) scholarship
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Metal additive manufacturing technologies are increasingly being adopted for rapid prototyping and to build geometrically complex designs for thermal management. This paper develops and experimentally validates a numerical model to design a high performance, small-scale heat sink for use with a thermoelectric cooling cap. The design was constrained by a heat load of 2.15 W, and a target average base temperature of 45 degrees C as a compromise between avoiding burn injury and reducing heat dissipation requirements. Over successive numerical iterations, an optimal natural convection heat sink was developed with an estimated thermal resistance of 10.9 K.W-1 and base temperature of 44.4 degrees C. This design featured an internal cavity in a tapered pin array, and was able to achieve a steady state base temperature that was 11.7 degrees C cooler than a conventional design, with 51% less surface area and significantly less material.
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