Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump

Modular and scalable distributed generation solutions as combined cooling, heating and power (CCHP) systems are currently a promising solution for the simultaneous generation of electricity and useful heating and cooling for large buildings or industries. In the present work, a solar-heated trigener...

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Detalles Bibliográficos
Autores: García Domínguez, Jesús, Marcos del Cano, José Daniel
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Nacional de Educación a Distancia
Repositorio:e-spacio. Repositorio Institucional de la UNED
Idioma:inglés
OAI Identifier:oai:e-spacio.uned.es:20.500.14468/12425
Acceso en línea:https://hdl.handle.net/20.500.14468/12425
Access Level:acceso abierto
Palabra clave:trigeneration (CCHP)
organic Rankine cycle (ORC)
solar thermal energy
parametric optimisation
performance comparison
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spelling Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump García Domínguez, Jesús Marcos del Cano, José Daniel trigeneration (CCHP) organic Rankine cycle (ORC) solar thermal energy parametric optimisation performance comparison Modular and scalable distributed generation solutions as combined cooling, heating and power (CCHP) systems are currently a promising solution for the simultaneous generation of electricity and useful heating and cooling for large buildings or industries. In the present work, a solar-heated trigeneration approach based on different organic Rankine cycle (ORC) layouts and a single-effect H2O/LiBr absorption heat pump integrated as a bottoming cycle is analysed from the thermodynamic viewpoint. The main objective of the study is to provide a comprehensive guide for selecting the most suitable CCHP configuration for a solar-heated CCHP system, following a systematic investigation approach. Six alternative CCHP configurations based on single-pressure and dual-pressure ORC layouts, such as simple, recuperated and superheated cycles, and their combinations, and seven organic fluids as working medium are proposed and compared systematically. A field of solar parabolic trough collectors (SPTCs) used as a heat source of the ORC layouts and the absorption heat pump are kept invariant. A comprehensive parametric analysis of the different proposed configurations is carried out for different design operating conditions. Several output parameters, such as energy and exergy efficiency, net electrical power and electrical to heating and cooling ratios are examined. The study reveals that the most efficient CCHP configuration is the single-pressure ORC regenerative recuperated superheated cycle with toluene as a working fluid, which is on average 25% and 8% more efficient than the variants with single-pressure simple cycle and the dual-pressure recuperated superheated cycle, respectively. At nominal design conditions, the best performing CCHP variant presents 163.7% energy efficiency and 12.3% exergy efficiency, while the electricity, cooling and heating productions are 56.2 kW, 223.0 kW and 530.1 kW, respectively MDPI https://hdl.handle.net/20.500.14468/12425
title Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
spellingShingle Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
García Domínguez, Jesús
trigeneration (CCHP)
organic Rankine cycle (ORC)
solar thermal energy
parametric optimisation
performance comparison
title_short Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
title_full Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
title_fullStr Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
title_full_unstemmed Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
title_sort Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
author García Domínguez, Jesús
author_facet García Domínguez, Jesús
Marcos del Cano, José Daniel
author_role author
author2 Marcos del Cano, José Daniel
author2_role author
topic trigeneration (CCHP)
organic Rankine cycle (ORC)
solar thermal energy
parametric optimisation
performance comparison
topic_facet trigeneration (CCHP)
organic Rankine cycle (ORC)
solar thermal energy
parametric optimisation
performance comparison
description Modular and scalable distributed generation solutions as combined cooling, heating and power (CCHP) systems are currently a promising solution for the simultaneous generation of electricity and useful heating and cooling for large buildings or industries. In the present work, a solar-heated trigeneration approach based on different organic Rankine cycle (ORC) layouts and a single-effect H2O/LiBr absorption heat pump integrated as a bottoming cycle is analysed from the thermodynamic viewpoint. The main objective of the study is to provide a comprehensive guide for selecting the most suitable CCHP configuration for a solar-heated CCHP system, following a systematic investigation approach. Six alternative CCHP configurations based on single-pressure and dual-pressure ORC layouts, such as simple, recuperated and superheated cycles, and their combinations, and seven organic fluids as working medium are proposed and compared systematically. A field of solar parabolic trough collectors (SPTCs) used as a heat source of the ORC layouts and the absorption heat pump are kept invariant. A comprehensive parametric analysis of the different proposed configurations is carried out for different design operating conditions. Several output parameters, such as energy and exergy efficiency, net electrical power and electrical to heating and cooling ratios are examined. The study reveals that the most efficient CCHP configuration is the single-pressure ORC regenerative recuperated superheated cycle with toluene as a working fluid, which is on average 25% and 8% more efficient than the variants with single-pressure simple cycle and the dual-pressure recuperated superheated cycle, respectively. At nominal design conditions, the best performing CCHP variant presents 163.7% energy efficiency and 12.3% exergy efficiency, while the electricity, cooling and heating productions are 56.2 kW, 223.0 kW and 530.1 kW, respectively
publishDate 2021
format article
url https://hdl.handle.net/20.500.14468/12425
language eng
eu_rights_str_mv openAccess
publisher MDPI
institution Universidad Nacional de Educación a Distancia
collection e-spacio. Repositorio Institucional de la UNED
reponame_str e-spacio. Repositorio Institucional de la UNED
instname_str Universidad Nacional de Educación a Distancia
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publishDateSort 2021
author_browse García Domínguez, Jesús
Marcos del Cano, José Daniel
publisherStr MDPI
score 6.924472

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