RT info:eu-repo/semantics/article
T1 Low temperature heat source for power generation: Exhaustive analysis of a carbon dioxide transcritical power cycle
A1 Velez Jaramillo, Jhon Fredy
A1 Segovia Puras, José Juan
A1 Chejne, Farid
A1 Antolín, Gregorio
A1 Quijano, Ana
A1 Martín González, María del Carmen
K1 Carbon dioxide
K1 Energy efficiency
K1 Exergy efficiency
K1 Power generation
K1 Waste heat
K1 3322.02 Generación de Energía
K1 3322.05 Fuentes no Convencionales de Energía
K1 2213 Termodinámica
AB The main results of a theoretical work on the use of a low temperature heat source for power generation through a carbon dioxide transcritical power cycle are reported in this paper. The procedure for analyzing the behaviour of the proposed cycle consisted in modifying the input pressure to the turbine from 66 bar, maintained constant each evaluated temperature (60 °C, 90 °C, 120 °C and 150 °C) until the net work was approximately zero. As a result, the maximum exergy efficiency was 50%, while the energy efficiencies obtained were 9.8%, 7.3%, 4.9% and 2.4% and the net specific work was 18.2 kJ/kg, 12.8 kJ/kg, 7.8 kJ/kg and 3.5 kJ/kg, respectively. Furthermore, the effect of the addition of an internal heat exchanger, which obviously supposed an increase in the efficiency, was analyzed. The analysis of the proposed system shows the viability of implementing this type of process as an energy alternative and/or strengthener of non-conventional energy sources in non-provided zones, or for increasing the energy efficiency in the industry
PB Elsevier
SN 0360-5442
YR 2011
FD 2011
LK https://uvadoc.uva.es/handle/10324/65425
UL https://uvadoc.uva.es/handle/10324/65425
LA eng
NO Energy, Vol. 36, Issue 9, Pages 5497 - 5507
NO Producción Científica
DS UVaDOC
RD 11-jul-2024