New approach to waste-heat energy harvesting: pyroelectric energy conversion
Harvesting waste heat for useful purposes is an essential component of improving the efficiency of primary energy utilization. Today, approaches such as pyroelectric energy conversion are receiving renewed interest for their ability to turn wasted energy back into useful energy. From this perspectiv...
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| Veröffentlicht in: | NPG Asia Materials 2019-06, Vol.11 (1), Article 26 |
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| creator | Pandya, Shishir Velarde, Gabriel Zhang, Lei Wilbur, Joshua D. Smith, Andrew Hanrahan, Brendan Dames, Chris Martin, Lane W. |
| description | Harvesting waste heat for useful purposes is an essential component of improving the efficiency of primary energy utilization. Today, approaches such as pyroelectric energy conversion are receiving renewed interest for their ability to turn wasted energy back into useful energy. From this perspective, the need for these approaches, the basic mechanisms and processes underlying their operation, and the material and device requirements behind pyroelectric energy conversion are reviewed, and the potential for advances in this area is also discussed.
With two-thirds of the primary energy produced every year rejected as heat, the need for techniques that harvest low-grade waste heat with higher fractions of Carnot efficiency is clear. This article develops a perspective on pyroelectric energy conversion (PEC), that leverages the intrinsic coupling between electrical polarization and temperature in pyroelectric materials where a change in temperature begets a flow of electrical charge. This article will shed light on what thermo-electrical properties are crucial for PEC and the routes to enhance them. Subsequent discussion will cover thermodynamic cycles and device design rules to extract maximum work and power. |
| doi_str_mv | 10.1038/s41427-019-0125-y |
| format | Article |
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With two-thirds of the primary energy produced every year rejected as heat, the need for techniques that harvest low-grade waste heat with higher fractions of Carnot efficiency is clear. This article develops a perspective on pyroelectric energy conversion (PEC), that leverages the intrinsic coupling between electrical polarization and temperature in pyroelectric materials where a change in temperature begets a flow of electrical charge. This article will shed light on what thermo-electrical properties are crucial for PEC and the routes to enhance them. Subsequent discussion will cover thermodynamic cycles and device design rules to extract maximum work and power.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41427-019-0125-y</doi><orcidid>https://orcid.org/0000-0003-1889-2513</orcidid><orcidid>https://orcid.org/0000000318892513</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/166/987 639/301/299/2736 639/766/25 639/925/927/1007 Biomaterials Chemistry and Materials Science Electrical properties Energy Energy conversion efficiency Energy harvesting Energy Systems Energy utilization Heat MATERIALS SCIENCE Optical and Electronic Materials Perspective Photovoltaic cells Structural Materials Surface and Interface Science Thermodynamic cycles Thin Films Waste heat |
| title | New approach to waste-heat energy harvesting: pyroelectric energy conversion |
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