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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

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Indirect Electrochemical Cooling: Model-Based Performance Analysis and Working Fluid Selection.

Lana Liebl¹, André Bardow¹, Dennis Roskosch¹

¹Department of Mechanical and Process Engineering, ETH Zurich, Tannenstrasse 3, Zurich 8092, Switzerland.

Industrial & Engineering Chemistry Research

|January 22, 2024

Summary

This summary is machine-generated.

This study explores electrochemical cooling as a sustainable alternative to traditional refrigeration. Researchers identified 35 working fluids that could significantly outperform current vapor-compression systems.

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Area of Science:

Thermodynamics
Electrochemistry
Sustainable Energy

Background:

Rising global energy demand for cooling and heating necessitates efficient, sustainable technologies.
Vapor-compression systems are standard but face limitations in downscaling and maintenance.
Electrochemical processes offer a potential alternative to overcome these drawbacks.

Purpose of the Study:

To systematically quantify the thermodynamic potential of indirect electrochemical cooling.
To evaluate and optimize the performance of electrochemical cooling systems.
To identify promising working fluids for advanced refrigeration technologies.

Main Methods:

Developed an equilibrium-based process model to assess working fluid performance.
Screened an extensive database to identify potential working fluids.
Analyzed and optimized the electrochemical cooling process for Coefficient of Performance (COP).

Main Results:

Most investigated working fluids showed efficiencies comparable to or lower than vapor-compression systems (COP 3.0-4.0).
Identified 35 promising working fluids achieving higher efficiencies, with COPs up to 9.63 (49% of Carnot efficiency).
Demonstrated the potential for electrochemical cooling to surpass conventional refrigeration.

Conclusions:

Electrochemical cooling presents a viable and potentially superior alternative to vapor-compression systems.
Specific working fluids show significant promise for high-efficiency electrochemical refrigeration.
Further investigation into these working fluids is warranted for practical application.