Performance evaluation of modified compound organic Rankine-vapour compression cycle with two cooling levels, heating, and power generation
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadatos
Título
Performance evaluation of modified compound organic Rankine-vapour compression cycle with two cooling levels, heating, and power generationFecha de publicación
2023Editor
ElsevierCita bibliográfica
AL-SAYYAB, Ali Khalid Shaker; MOTA-BABILONI, Adrián; NAVARRO-ESBRÍ, Joaquín. Performance evaluation of modified compound organic Rankine-vapour compression cycle with two cooling levels, heating, and power generation. Applied Energy, 2023, vol. 334, p. 120651Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0306261923000156Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
This work analyses a novel combined organic Rankine-compound ejector vapour compression cycle for power,
cooling and heating production using a low-grade ground heat source as the primary heat source. Ultra-low
global ... [+]
This work analyses a novel combined organic Rankine-compound ejector vapour compression cycle for power,
cooling and heating production using a low-grade ground heat source as the primary heat source. Ultra-low
global warming potential working fluids (R1234ze(E), R1243zf, and R1234yf) and parameters quantifying energy and exergy efficiency are considered. The system can be adapted to three operating modes, depending on
the ground source temperature, ranging from 55 to 90 ◦C: power-cooling, power-heat pump heating, and powerground source heating. The results indicate that this system notably increases the overall performance of all
investigated refrigerants. Compared to conventional organic Rankine and vapour compression cycles (ORC and
VCC), the R1234ze(E) power-cooling mode shows the highest coefficient of performance (COP) increase, 18 %.
Besides, including a recapture heat exchanger for condenser waste heat recovery can increase power generation
by 58 %. At ground source temperatures up to 65 ℃, power generation and thermal efficiency increased in the
power-heating mode due to the absence of the compressor power consumption. The exergy efficiency follows the
ground source temperatures for all modes. In power-ground source heating mode, the exergy efficiency notably
increased due to the absence of the heat pump exergy destruction. [-]
Publicado en
Applied Energy, 2023, vol. 334.Entidad financiadora
Agencia Estatal de Investigación
Código del proyecto o subvención
IJC2019-038997-I
Derechos de acceso
info:eu-repo/semantics/openAccess
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