scholarly journals pH-regulated thermo-driven nanofluidics for nanoconfined mass transport and energy conversion

2020 ◽  
Vol 2 (9) ◽  
pp. 4070-4076
Author(s):  
Xiaolu Zhao ◽  
Long Li ◽  
Wenyuan Xie ◽  
Yongchao Qian ◽  
Weipeng Chen ◽  
...  
Keyword(s):  
Mass Transport ◽  
Energy Conversion ◽  
Waste Heat ◽  
Ionic Transport ◽  
Nanofluidic System

A thermo-driven nanofluidic system was developed to extract waste heat based on directed ionic transport.

SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties

2021 ◽  
Author(s):  
Lin Xie ◽  
Dongsheng He ◽  
Jiaqing He
Keyword(s):  
Physical Properties ◽  
Energy Conversion ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
New Paradigm ◽  
Direct Energy Conversion ◽  
Structures And Properties ◽  
Direct Energy

Thermoelectric materials, which enable direct energy conversion between waste heat and electricity, are witnessing exciting developments due to innovative breakthroughs both in materials and the synergistic optimization of structures and properties.

Tunable Ionic Transport for a Triangular Nanochannel in a Polymeric Nanofluidic System

ACS Nano ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. 740-747 ◽  
Author(s):  
Bumjoo Kim ◽  
Joonseong Heo ◽  
Hyukjin J. Kwon ◽  
Seong J. Cho ◽  
Jongyoon Han ◽  
...  
Keyword(s):  
Ionic Transport ◽  
Nanofluidic System

Thermoelectric Transport in Silicon Germanium Nanocomposite

2008 ◽  
Author(s):  
Hohyun Lee ◽  
Daryoosh Vashaee ◽  
Xiaowei Wang ◽  
Giri Joshi ◽  
Gaohua Zhu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Energy Conversion ◽  
Silicon Germanium ◽  
Figure Of Merit ◽  
Waste Heat ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Thermoelectric Effects ◽  
Thermoelectric Transport ◽  
Potential Applications

Direct energy conversion between heat and electrical energy based on thermoelectric effects is attractive for potential applications in waste heat recovery and environmentally-friendly refrigeration. The energy conversion efficiency depends on the dimensionless figure of merit of thermoelectric materials, ZT, which is proportional to the electrical conductivity, the square of the Seebeck coefficient, and the inverse of the thermal conductivity. Currently, the low ZT values of available materials restrict the applications of this technology. However, significant enhancements in ZT were recently reported in nanostructured materials such as superlattices mainly due to their low thermal conductivities. According to recent studies, the reduced thermal conductivity of nanostructures is attributed to the large number of interfaces at which phonons are scattered. Based on this idea, nanocomposites are expected to have a lower thermal conductivity than their bulk counterparts with low fabrication cost just by mixing nano sized particles. In this work, we will discuss mechanisms of thermoelectric transport via modeling and provide experimental evidence on the enhancement of thermoelectric figure of merit in SiGe-based nanocomposites.

Highly efficient functional GexPb1−xTe based thermoelectric alloys

2014 ◽  
Vol 16 (37) ◽  
pp. 20120-20126 ◽  
Author(s):  
Yaniv Gelbstein ◽  
Joseph Davidow
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Efficient Implementation ◽  
Thermoelectric Devices

Methods for enhancement of the direct thermal to electrical energy conversion efficiency, upon development of advanced thermoelectric materials, are constantly investigated mainly for an efficient implementation of thermoelectric devices in automotive vehicles, for utilizing the waste heat generated in such engines into useful electrical power and thereby reduction of the fuel consumption and CO2 emission levels.

Self-Sustained, Independent Trifold Solar Energy Conversion System for Isolated Locations in Hot Climate Areas

2014 ◽  
Vol 659 ◽  
pp. 421-424 ◽  
Author(s):  
Aristotel Popescu ◽  
Ema Carmen Panaite ◽  
Ana Georgiana Lupu ◽  
Marius Atanasiu ◽  
Christos Vlachokostas ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Waste Heat ◽  
Strong Dependence ◽  
Solar Energy Conversion ◽  
Photovoltaic Cell ◽  
Total Efficiency ◽  
Hot Climate ◽  
Cell Conversion

This paper proposes two configurations for a hybrid solar energy conversion device that can be used as a self-sustained, independent power generation system in isolated locations in hot climate areas. Given the strong dependence of photovoltaic cell conversion efficiency on operation temperature, the cooling of the backside becomes imperative, increasing not only electrical, but also the overall solar energy conversion efficiency. The hybrid system provides now electricity and hot hater for domestic applications. To further improve electrical efficiency, a thermoelectric generator module is added to the system, harvesting the thermal energy that otherwise would be regarded as waste heat and rejected to environment. The optimization of the parameters that influence the total efficiency demonstrate the strong connection between the three parts of the system, PV-TE-DHW.

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