Next Article in Journal
Statistical Ensemble Theory of Gompertz Growth Model
Next Article in Special Issue
Using Exergy to Understand and Improve the Efficiency of Electrical Power Technologies
Previous Article in Journal
The Languages of Neurons: An Analysis of Coding Mechanisms by Which Neurons Communicate, Learn and Store Information
Previous Article in Special Issue
Determination of the Real Loss of Power for a Condensing and a Backpressure Turbine by Means of Second Law Analysis
Entropy 2009, 11(4), 798-806; doi:10.3390/e11040798
Article

Exergy as a Useful Variable for Quickly Assessing the Theoretical Maximum Power of Salinity Gradient Energy Systems

Received: 14 September 2009; Accepted: 3 November 2009 / Published: 5 November 2009
(This article belongs to the Special Issue Exergy: Analysis and Applications)
Download PDF [219 KB, uploaded 5 November 2009]
Abstract: It is known that mechanical work, and in turn electricity, can be produced from a difference in the chemical potential that may result from a salinity gradient. Such a gradient may be found, for instance, in an estuary where a stream of soft water is flooding into a sink of salty water which we may find in an ocean, gulf or salt lake. Various technological approaches are proposed for the production of energy from a salinity gradient between a stream of soft water and a source of salty water. Before considering the implementation of a typical technology, it is of utmost importance to be able to compare various technological approaches, on the same basis, using the appropriate variables and mathematical formulations. In this context, exergy balance can become a very useful tool for an easy and quick evaluation of the maximum thermodynamic work that can be produced from energy systems. In this short paper, we briefly introduce the use of exergy for enabling us to easily and quickly assess the theoretical maximum power or ideal reversible work we may expect from typical salinity gradient energy systems.
Keywords: exergy; salinity gradient energy systems; electric power exergy; salinity gradient energy systems; electric power
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Labrecque, R. Exergy as a Useful Variable for Quickly Assessing the Theoretical Maximum Power of Salinity Gradient Energy Systems. Entropy 2009, 11, 798-806.

AMA Style

Labrecque R. Exergy as a Useful Variable for Quickly Assessing the Theoretical Maximum Power of Salinity Gradient Energy Systems. Entropy. 2009; 11(4):798-806.

Chicago/Turabian Style

Labrecque, Raynald. 2009. "Exergy as a Useful Variable for Quickly Assessing the Theoretical Maximum Power of Salinity Gradient Energy Systems." Entropy 11, no. 4: 798-806.


Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert