scholarly journals All-Day Thermogalvanic Cells for Environmental Thermal Energy Harvesting

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Boyang Yu ◽  
Jiangjiang Duan ◽  
Jia Li ◽  
Wenke Xie ◽  
Hongrun Jin ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Electricity Generation ◽  
Large Scale ◽  
Low Frequency ◽  
Direct Conversion ◽  
Thermal Source ◽  
Low Grade ◽  
Broadband Absorber ◽  
Thermogalvanic Cell

Direct conversion of the tremendous and ubiquitous low-grade thermal energy into electricity by thermogalvanic cells is a promising strategy for energy harvesting. The environment is one of the richest and renewable low-grade thermal source. However, critical challenges remain for all-day electricity generation from environmental thermal energy due to the low frequency and small amplitude of temperature fluctuations in the environment. In this work, we report a tandem device consisting of a polypyrrole (PPy) broadband absorber/radiator, thermogalvanic cell, and thermal storage material (Cu foam/PEG1000) that integrates multiple functions of heating, cooling, and recycling of thermal energy. The thermogalvanic cell enables continuous utilization of environmental thermal energy at both daytime and nighttime, yielding maximum outputs as high as 0.6 W m-2 and 53 mW m-2, respectively. As demonstrated outdoors by a large-scale prototype module, this design offers a feasible and promising approach to all-day electricity generation from environmental thermal energy.

scholarly journals Experiment Investigation of Bistable Vibration Energy Harvesting with Random Wave Environment

2021 ◽  
Vol 11 (9) ◽  
pp. 3868
Author(s):  
Qiong Wu ◽  
Hairui Zhang ◽  
Jie Lian ◽  
Wei Zhao ◽  
Shijie Zhou ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Harvesting ◽  
Cantilever Beam ◽  
Large Scale ◽  
Low Frequency ◽  
Vibration Energy ◽  
Random Wave ◽  
Periodic Signal ◽  
Vibration Energy Harvesting ◽  
Motion Activity

The energy harvested from the renewable energy has been attracting a great potential as a source of electricity for many years; however, several challenges still exist limiting output performance, such as the package and low frequency of the wave. Here, this paper proposed a bistable vibration system for harvesting low-frequency renewable energy, the bistable vibration model consisting of an inverted cantilever beam with a mass block at the tip in a random wave environment and also develop a vibration energy harvesting system with a piezoelectric element attached to the surface of a cantilever beam. The experiment was carried out by simulating the random wave environment using the experimental equipment. The experiment result showed a mass block’s response vibration was indeed changed from a single stable vibration to a bistable oscillation when a random wave signal and a periodic signal were co-excited. It was shown that stochastic resonance phenomena can be activated reliably using the proposed bistable motion system, and, correspondingly, large-scale bistable responses can be generated to realize effective amplitude enlargement after input signals are received. Furthermore, as an important design factor, the influence of periodic excitation signals on the large-scale bistable motion activity was carefully discussed, and a solid foundation was laid for further practical energy harvesting applications.

Flexible and non-volatile redox active quasi-solid state ionic liquid based electrolytes for thermal energy harvesting

2018 ◽  
Vol 2 (8) ◽  
pp. 1806-1812 ◽  
Author(s):  
Abuzar Taheri ◽  
Douglas R. MacFarlane ◽  
Cristina Pozo-Gonzalo ◽  
Jennifer M. Pringle
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Energy Harvesting ◽  
Thermal Energy ◽  
Solid State Ionic ◽  
Waste Heat ◽  
Low Grade ◽  
Redox Active ◽  
Thermal Energy Harvesting ◽  
State Ionic

Towards the development of stable thermocells for harvesting low-grade waste heat, non-volatile and flexible electrolyte films are reported.

scholarly journals Quasi‐solid‐State Electrolytes for Low‐Grade Thermal Energy Harvesting using a Cobalt Redox Couple

ChemSusChem ◽  
2018 ◽  
Vol 11 (16) ◽  
pp. 2788-2796 ◽  
Author(s):  
Abuzar Taheri ◽  
Douglas R. MacFarlane ◽  
Cristina Pozo‐Gonzalo ◽  
Jennifer M. Pringle
Keyword(s):  
Solid State ◽  
Energy Harvesting ◽  
Thermal Energy ◽  
Redox Couple ◽  
Low Grade ◽  
Thermal Energy Harvesting ◽  
Solid State Electrolytes

scholarly journals A Review on Low-Grade Thermal Energy Harvesting: Materials, Methods and Devices

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1433 ◽  
Author(s):  
Ravi Kishore ◽  
Shashank Priya
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Energy Resource ◽  
Cost Effective ◽  
Low Grade ◽  
Advantages And Disadvantages ◽  
Thermal Energy Harvesting ◽  
Basic Physics ◽  
Working Principle ◽  
The Individual

Combined rejected and naturally available heat constitute an enormous energy resource that remains mostly untapped. Thermal energy harvesting can provide a cost-effective and reliable way to convert available heat into mechanical motion or electricity. This extensive review analyzes the literature covering broad topical areas under solid-state low temperature thermal energy harvesting. These topics include thermoelectricity, pyroelectricity, thermomagneticity, and thermoelasticity. For each topical area, a detailed discussion is provided comprising of basic physics, working principle, performance characteristics, state-of-the-art materials, and current generation devices. Technical advancements reported in the literature are utilized to analyze the performance, identify the challenges, and provide guidance for material and mechanism selection. The review provides a detailed analysis of advantages and disadvantages of each energy harvesting mechanism, which will provide guidance towards designing a hybrid thermal energy harvester that can overcome various limitations of the individual mechanism.

Enhanced power factor of n-type Bi2Te2.8Se0.2 alloys through an efficient one-step sintering strategy for low-grade heat harvesting

2020 ◽  
Vol 8 (46) ◽  
pp. 24524-24535
Author(s):  
Haoxiang Wei ◽  
Jiaqi Tang ◽  
Hongchao Wang ◽  
Dongyan Xu
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Power Factor ◽  
Low Grade ◽  
Thermal Energy Harvesting ◽  
One Step ◽  
Low Grade Heat

This work reports the enhanced power factor of n-type Bi2Te2.8Se0.2 alloys through an efficient one-step sintering strategy for thermal energy harvesting.

A solid state thermogalvanic cell harvesting low-grade thermal energy

2017 ◽  
Vol 42 (41) ◽  
pp. 25877-25881 ◽  
Author(s):  
Linlin Yang ◽  
Hai Sun ◽  
Suli Wang ◽  
Luhua Jiang ◽  
Gongquan Sun
Keyword(s):  
Solid State ◽  
Thermal Energy ◽  
Low Grade ◽  
Cell Harvesting ◽  
Thermogalvanic Cell

Low-grade waste heat recovery using the reverse magnetocaloric effect

2017 ◽  
Vol 1 (9) ◽  
pp. 1899-1908 ◽  
Author(s):  
Ravi Anant Kishore ◽  
Shashank Priya
Keyword(s):  
Energy Harvesting ◽  
Magnetocaloric Effect ◽  
Thermal Energy ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Low Grade ◽  
Thermal Energy Harvesting ◽  
Magnetocaloric Materials

This study demonstrates a novel thermal energy harvesting cycle and provides pathway for low-grade waste heat recovery using magnetocaloric materials.

Sign in / Sign up

Export Citation Format

Share Document