Pyroelectric energy conversion offers a novel approach for directly converting waste heat into electricity. This paper reports numerical simulations of a prototypical pyroelectric energy converter. The two-dimensional mass, momentum, and energy equations were solved to predict the local and time-dependent pressure, velocity, and temperature. Then, the heat input, pump power, and electrical power generated were estimated, along with the thermodynamic energy efficiency of the device. It was established that reducing the length of the device and the viscosity of the working fluid improved the energy efficiency and power density by increasing the optimum operating frequency of the device. Results show that a maximum efficiency of 5.2% at 0.5 Hz corresponding to 55.4% of the Carnot efficiency between 145 and 185°C can be achieved when using commercial 1.5 cst silicone oil. The maximum power density was found to be 38.4 W/l of pyroelectric material.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4943-9
PROCEEDINGS PAPER
Optimization of a Pyroelectric Energy Converter for Harvesting Waste Heat
Ashcon Navid
,
Ashcon Navid
University of California, Los Angeles, Los Angeles, CA
Search for other works by this author on:
Damien Vanderpool
,
Damien Vanderpool
University of California, Los Angeles, Los Angeles, CA
Search for other works by this author on:
Abubakarr Bah
,
Abubakarr Bah
University of California, Los Angeles, Los Angeles, CA
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Laurent Pilon
Laurent Pilon
University of California, Los Angeles, Los Angeles, CA
Search for other works by this author on:
Ashcon Navid
University of California, Los Angeles, Los Angeles, CA
Damien Vanderpool
University of California, Los Angeles, Los Angeles, CA
Abubakarr Bah
University of California, Los Angeles, Los Angeles, CA
Laurent Pilon
University of California, Los Angeles, Los Angeles, CA
Paper No:
IHTC14-23135, pp. 159-168; 10 pages
Published Online:
March 1, 2011
Citation
Navid, A, Vanderpool, D, Bah, A, & Pilon, L. "Optimization of a Pyroelectric Energy Converter for Harvesting Waste Heat." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 8. Washington, DC, USA. August 8–13, 2010. pp. 159-168. ASME. https://doi.org/10.1115/IHTC14-23135
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