Theoretical Proof of Concept For The Green Revolution Energy Converter

Authors: Gustav Edholm, John Malmdal, Lukas Haglund, Markus Eriksson and Oscar Magnusson.
This team achieved a significant milestone by developing a custom analytical framework to theoretically validate the GREC technology. Their report established a mathematical model based on Carnot engine principles, performed material analysis, developed calculation models in MATLAB, thermal simulations in ANSYS, and CAD geometry in CREO.
To get an overview of how the heat transfer coefficient (HTC) behaved in the model, the change of airflow was computed along the radius, a mathematical tool for performance calculations was developed to theoretically verify the technology of the GREC. By applying a few simplifications and assumptions, the tool provided reasonable results compared to scientific theory. How different scales affect the performance of the GREC was examined and results showed that a larger GREC model would be more effective and able to produce more power at several given source temperatures. The revolving speed proves to impact the heat transfer capability in the engine, primarily by affecting the magnitude of the HTC but also the achieved temperature difference in the Work Generating Volume (WGV). A higher temperature difference between the heat sources also leads to a significantly higher obtained power output and efficiency, making it a promising concept to study further.

The research team’s conclusions explicitly acknowledged that “real experiments with similar operating modes must be conducted and compared” to validate their mathematical framework.

From Theory to Computational Investigations:
The Spring 2022 analytical predictions established testable hypotheses regarding GREC thermal performance. To validate these computational findings and quantify parametric dependencies between geometric configurations and system performance, Linköping University launched two parallel computational investigations in the following Autumn 2022.

Project presentation at nilsinside.com on this link:

Publication at Linköpings Universitet - Digitala Vetenskapliga Arkivet - Theoretical Proof Of Concept For The Green Revolution Energy Converter