气候变化领域集成服务门户(CCPortal): Energy scavenging from ultra-low temperature gradients

CCPortal

DOI	10.1039/c8ee03084g
	Energy scavenging from ultra-low temperature gradients
	Kishore R.A.; Davis B.; Greathouse J.; Hannon A.; Emery Kennedy D.; Millar A.; Mittel D.; Nozariasbmarz A.; Kang M.G.; Kang H.B.; Sanghadasa M.; Priya S.
发表日期	2019
ISSN	17545692
起始页码	1008
结束页码	1018
卷号	12 期号:3
英文摘要	Thermal energy harvesting from natural resources and waste heat is becoming critical due to ever-increasing environmental concerns. However, so far, available thermal energy harvesting technologies have only been able to generate electricity from large temperature gradients. Here, we report a fundamental breakthrough in low-grade thermal energy harvesting and demonstrate a device based on the thermomagnetic effect that uses ambient conditions as the heat sink and operates from a heat source at temperatures as low as 24 °C. This concept can convert temperature gradients as low as 2 °C into electricity while operating near room temperature. The device is found to exhibit a power density (power per unit volume of active material) of 105 μW cm-3 at a temperature difference of 2 °C, which increases to 465 μW cm-3 at a temperature difference of 10 °C. The power density increases by 2.5 times in the presence of wind with a speed of 2.0 m s-1. This advancement in thermal energy harvesting technology will have a transformative effect on renewable energy generation and in reducing global warming. © 2019 The Royal Society of Chemistry.
英文关键词	Global warming; Renewable energy resources; Thermal energy; Thermal gradients; Waste heat; Ambient conditions; Environmental concerns; Generate electricity; Near room temperature; Renewable energy generation; Temperature differences; Thermomagnetic effect; Ultra low temperatures; Energy harvesting; alternative energy; electricity; energy balance; heat source; low temperature; operations technology; recovery method; scavenging (chemistry); temperature gradient
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189959
作者单位	Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, VA 24061, United States; Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States; Aviation and Missile Research, Development, and Engineering Center, US Army RDECOM, Redstone Arsenal, AL 35898, United States
推荐引用方式 GB/T 7714	Kishore R.A.,Davis B.,Greathouse J.,et al. Energy scavenging from ultra-low temperature gradients[J],2019,12(3).
APA	Kishore R.A..,Davis B..,Greathouse J..,Hannon A..,Emery Kennedy D..,...&Priya S..(2019).Energy scavenging from ultra-low temperature gradients.Energy & Environmental Science,12(3).
MLA	Kishore R.A.,et al."Energy scavenging from ultra-low temperature gradients".Energy & Environmental Science 12.3(2019).