scholarly journals Concept for energy harvesting from the salinity gradient on the basis of geothermal water

2018 ◽  
Vol 4 (2) ◽  
pp. 88-96
Author(s):  
Marek Bryjak ◽  
Nalan Kabay ◽  
Enver Güler ◽  
Barbara Tomaszewska
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Energy Resource ◽  
Green Energy ◽  
Geothermal Water ◽  
Renewable Energy Resource ◽  
Reverse Electrodialysis ◽  
Power Stations ◽  
Research Concept ◽  
World Geothermal

The use of renewable energy resource is usually directed to solar, wind or hydroelectric stations. However, there are other sources for getting the ‘green energy’. One of them is geothermal source, the energy stored in the underground fluids. In the world, geothermal water is used mostly for heating purposes, greenhouses, agriculture, for generation of warm water, therapeutic and recreational purposes and to generate electricity in power stations. After these uses, geothermal water is usually seen as waste water. This research presents the idea for innovative energy harvesting from the salinity gradient on the basis of waste geothermal water. Two methods are analyzed to be used: capacitive mixing (CAPMIX) and reverse electrodialysis (RED). The aim of the research concept is analysis for testing the applicability of both methods in energy harvesting from mixing of saline geothermal water and RO brine with water, before its re-injection to underground reservoirs.

Reverse electrodialysis in bilayer nanochannels: salinity gradient-driven power generation

2018 ◽  
Vol 20 (10) ◽  
pp. 7295-7302 ◽  
Author(s):  
Rui Long ◽  
Zhengfei Kuang ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Gradient Energy ◽  
Ion Transportation

To evaluate the possibility of nano-fluidic reverse electrodialysis (RED) for salinity gradient energy harvesting, we consider the behavior of ion transportation in a bilayer cylindrical nanochannel with different sized nanopores connecting two reservoirs at different NaCl concentrations.

Electrochemical Cell Equipment for Salinity Gradient Power Generation

2017 ◽  
Author(s):  
Arijit Bag
Keyword(s):  
Present Method ◽  
Electrochemical Cell ◽  
Sea Water ◽  
Salinity Gradient ◽  
Sustainable Energy ◽  
Energy Resource ◽  
Concentration Cell ◽  
Reverse Electrodialysis ◽  
Pressure Retarded Osmosis ◽  
Very High

Extraction of electricity from the salinity gradient of sea water-river water interface has drawn the key interest of sustainable energy researchers. Different technologies are in the spot light − such as pressure retarded osmosis, reverse electrodialysis, ionic diode membrane, mixing entropy battery, microbial fuel cell, etc. In the present work, electrochemical cell equipment is used for this purpose. Two different techniques are described − galvanic cell equipment (GCEQ) and concentration cell equipment (CCEQ). It is observed that, the extracted energy density is very high (up to 95 W m<sup>−2</sup> ) compared with the other methods of the same kind reported so far. Implementation of these methods is trivial. Thus, we may conclude that present method will fulfill our requirement of sustainable energy resource.<br><br>

An atomically-thin graphene reverse electrodialysis system for efficient energy harvesting from salinity gradient

Nano Energy ◽  
2019 ◽  
Vol 57 ◽  
pp. 783-790 ◽  
Author(s):  
Yanjun Fu ◽  
Xun Guo ◽  
Yihan Wang ◽  
Xinwei Wang ◽  
Jianming Xue
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Efficient Energy

Hydrodynamic slip enhanced nanofluidic reverse electrodialysis for salinity gradient energy harvesting

Desalination ◽  
2020 ◽  
Vol 477 ◽  
pp. 114263 ◽  
Author(s):  
Rui Long ◽  
Yanan Zhao ◽  
Zhengfei Kuang ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Hydrodynamic Slip ◽  
Gradient Energy

Electrochemical Cell Equipment for Salinity Gradient Power Generation

2017 ◽  
Author(s):  
Arijit Bag
Keyword(s):  
Present Method ◽  
Electrochemical Cell ◽  
Sea Water ◽  
Salinity Gradient ◽  
Sustainable Energy ◽  
Energy Resource ◽  
Concentration Cell ◽  
Reverse Electrodialysis ◽  
Pressure Retarded Osmosis ◽  
Very High

Extraction of electricity from the salinity gradient of sea water-river water interface has drawn the key interest of sustainable energy researchers. Different technologies are in the spot light − such as pressure retarded osmosis, reverse electrodialysis, ionic diode membrane, mixing entropy battery, microbial fuel cell, etc. In the present work, electrochemical cell equipment is used for this purpose. Two different techniques are described − galvanic cell equipment (GCEQ) and concentration cell equipment (CCEQ). It is observed that, the extracted energy density is very high (up to 95 W m<sup>−2</sup> ) compared with the other methods of the same kind reported so far. Implementation of these methods is trivial. Thus, we may conclude that present method will fulfill our requirement of sustainable energy resource.<br><br>

scholarly journals Fault Simulations in a Multiterminal High Voltage DC Network with Modular Multilevel Converters Using Full-Bridge Submodules

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1653
Author(s):  
Ioan-Cătălin Damian ◽  
Mircea Eremia ◽  
Lucian Toma
Keyword(s):  
High Voltage ◽  
Energy Resource ◽  
Fault Analysis ◽  
Renewable Energy Resource ◽  
Dynamic Simulations ◽  
Multilevel Converters ◽  
Strong Focus ◽  
Modular Multilevel Converters ◽  
Overhead Power Lines ◽  
And Control

The concept of high-voltage DC transmission using a multiterminal configuration is presently a central topic of research and investment due to rekindled interest in renewable energy resource integration. Moreover, great attention is given to fault analysis, which leads to the necessity of developing proper tools that enable proficient dynamic simulations. This paper leverages models and control system design techniques and demonstrates their appropriateness for scenarios in which faults are applied. Furthermore, this paper relies on full-bridge submodule topologies in order to underline the increase in resilience that such a configuration brings to the multiterminal DC network, after an unexpected disturbance. Therefore, strong focus is given to fault response, considering that converters use a full-bridge topology and that overhead power lines connect the terminals.

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