Fredy Vélez

TL;DR: An overview of the technical and economic aspects, as well as the market evolution of the organic Rankine Cycle (ORC) is presented in this article. But it is not a suitable working fluid for these systems since there is as yet none that provides all aspects that must be taken into account in ORCs.

TL;DR: In this article, a low temperature heat source was used for power generation through a carbon dioxide transcritical power cycle, and the results showed the viability of implementing this type of process as an energy alternative and/or strengthener of nonconventional energy sources in non-provided zones, or for increasing the energy efficiency in the industry.

TL;DR: In this article, the results obtained on a carbon dioxide transcritical power cycle using an energy and exergy analysis were reported on a CO2-transcaffered power cycle, which consisted of modifying the inlet pressure to the turbine from 66 to 150 bar, by means of the software HYSYS®, maintaining constant each evaluated turbine inlet temperature (60, 90, 120 and 150°C) until the net work was approximately zero.

TL;DR: In this article, the main results of a thermodynamic study on the use of a low temperature heat source (150°C as maximum) for power generation through a basic Rankine are reported.

TL;DR: The current standards to calculate an energy balance are reviewed and a methodology for calculating the energy balance at the district level and energy performance of those districts aspiring to become a Positive Energy District (PED) is proposed.