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Development of Scaling Model for a MEMS-Based Micro Heat Engine

[+] Author Affiliations
H. Bardaweel, B. S. Preetham, R. Richards, C. Richards

Washington State University, Pullman, WA

M. Anderson

University of Idaho, Moscow, ID

Paper No. IMECE2010-37946, pp. 137-142; 6 pages
doi:10.1115/IMECE2010-37946
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro and Nano Systems
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4447-2
  • Copyright © 2010 by ASME

abstract

In this work we investigate issues related to scaling of a MEMS-based resonant heat engine. The engine is an external combustion engine made of a cavity encapsulated between two thin membranes. The cavity is filled with saturated liquid-vapor mixture working fluid. We use both model and experiment to investigate scaling of the MEMS-based resonant heat engine. The results suggest that the performance of the engine is determined by three major factors: geometry of the engine, speed of operation, and thermal physical properties of engine components. Larger engine volumes, working fluids with higher latent heat of evaporation, slower engine speeds, and compliant expander structures are shown to be desirable.

Copyright © 2010 by ASME

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