NDLI: Harvesting Nanoscale Radiation Heat Transfer With Pyroelectric Materials

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Fang, Jin Frederich, Hugo Pilon, Laurent
Copyright Year	2009
Abstract	Pyroelectric energy conversion offers a novel, direct energy-conversion technology by transforming time-dependent temperature directly into electricity. It makes use of the pyroelectric effect to create a flow of charge to or from the surface of a material as a result of heating or cooling. However, existing pyroelectric energy converter can only operate at low frequency due to relatively low heat transfer rate between the pyroelectric materials and the working fluid subjected to oscillatory fluid flow between hot and cold sources. On the other hand, energy transfer by thermal radiation between two semi-infinite solids can be enhanced by several orders of magnitude as the gap separating them reduces to subwavelength size thanks to interference and tunneling of electromagnetic waves across the gap. This paper proposes a novel way to harvest nanoscale radiation heat transfer for direct pyroelectric energy conversion of waste heat into electricity. A new device is investigated numerically by accurately modeling nanoscale radiation heat transfer between the pyroelectric materials and hot and cold surfaces. Performance of the pyroelectric converter is predicted at various frequencies. The result shows that rapid energy transfer and higher operating frequency can be achieved to increase efficiency and power density.
Sponsorship	Heat Transfer Division
Starting Page	371
Ending Page	380
Page Count	10
File Format	PDF
ISBN	9780791843574
DOI	10.1115/HT2009-88570
e-ISBN	9780791838518
Volume Number	Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer
Conference Proceedings	ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
Language	English
Publisher Date	2009-07-19
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Nanoscale radiation Power density Pyroelectric Direct energy conversion Waste heat Nanoscale phenomena Radiation (physics) Heat transfer Energy conversion
Content Type	Text
Resource Type	Article

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