Hybrid membrane distillation-reverse electrodialysis electricity generation system to harvest low-grade thermal energy

2017 ◽  
Vol 525 ◽  
pp. 107-115 ◽  
Author(s):  
Rui Long ◽  
Baode Li ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Thermal Energy ◽  
Electricity Generation ◽  
Membrane Distillation ◽  
Hybrid Membrane ◽  
Low Grade ◽  
Generation System ◽  
Reverse Electrodialysis

scholarly journals Design and Development of Low-Cost Solar Electricity Generation System with Heliostat to Ensure the Optimum Uses of Rated Capacity of Solar Cells

2020 ◽  
pp. 113-116
Keyword(s):  
Flat Plate ◽  
Electricity Generation ◽  
Large Scale ◽  
Tracking System ◽  
Low Cost ◽  
Low Grade ◽  
The Sun ◽  
Solar Panels ◽  
Generation System ◽  
Solar Electricity

Almost all solar electricity generation systems are now operated with flat plate solar panels. These flat plate solar panels have a lot of expensive collector area although still deliver only low-grade temperature which is a boundless problem for assuring the optimum uses of the rated capacity of solar panels. Using heliostats can reduce this problem significantly. Heliostats consist of a single or a set of mirrors that track the sun’s position and reflect the sun rays into a central receiving point. With the movement of the sun, these mirrors are adjusted accordingly to track the sun to ensure the highest amount of sunlight reflected onto the same collection point. The system is cheaper than any other solar tracking system presently used in our country. This paper describes an improved design of a solar electricity generation system having a capacity of 1Wp with heliostats on an experimental basis. It will also demonstrate a comparison of a generation of a 1Wp solar system with and without heliostats. Successful outcomes of this experiment will lead us to implement the heliostats-based tracking system into the large-scale solar electricity generation systems.

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 Conducting thermal energy to the membrane/water interface for the enhanced desalination of hypersaline brines using membrane distillation

2021 ◽  
pp. 119188
Author(s):  
Jingbo Wang ◽  
Yiming Liu ◽  
Unnati Rao ◽  
Mark Dudley ◽  
Navid Dehdari Ebrahimi ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Membrane Distillation ◽  
Water Interface

Stack Thermo-Osmotic System for Low-Grade Thermal Energy Conversion

2021 ◽  
Author(s):  
Ji Li ◽  
Zikang Zhang ◽  
Runze Zhao ◽  
Bo Zhang ◽  
Yunmin Liang ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Thermal Energy ◽  
Low Grade ◽  
Thermal Energy Conversion ◽  
Osmotic System
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