Vol. 13 No. 2 (2023)

The results of the COP 28 meeting in Dubai showed the progress toward the climate change Paris Agreement is slower than necessary and more costly than expected. Key actors in the energy sector strengthened the need to deploy policies encouraging the introduction of new business models and technologies. Even, several companies recognized their recent changes in strategy returning to give more emphasis to their business-as-usual activities due to roadblocks to develop new projects in renewable energies.

This situation enlightens the urgent need that exists for developing innovative technologies that allow humankind to assure a future for our sons, grandsons, and new generations.

In this edition 13 No 2 of journal CT&F there are five papers published. A paper from a collaboration between Spanish and Mexican authors is related to the impact of introducing and economizer in a single flash plant for a geothermal case. The results show a marginal increase in thermodynamic and exergy efficiency using the economizer.

The other four articles are related to mobility in articles from India and Turkey. Three articles study the mixtures diesel – LPG – gasoline, blends of diesel fuel-linseed oil and biodiesel-ethanol, and the effect of cerium oxide nanoparticles on diesel fuel, measuring thermal and exergy efficiencies, fuel consumption, and emissions.

A fifth article studies the use of an artificial fish swarm speed-optimized fuzzy controller based on a deep neural learning classifier for energy management Systems in a Hybrid Electric Vehicle. Their results show that this controller decreases energy consumption and presents a better performance compared with other types of controllers.

Luis Javier Hoyos

Editor CT&F