An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)

The regasification of liquefied natural gas provides considerable cold energy that would have practical potential in different industrial fields and makes a suitable option for integrating with cryogenic air separation systems that requires a significant amount of energy. In this research, two-colum...

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Autores principales:	Bahram Ghorbani, Zahra Rahnavard, Mohammad Hossein Ahmadi, Alireza Khatami Jouybari
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Photovoltaic panel Air separation unit Molten carbonate fuel cells Refrigeration system Exergy analysis Thermal integration Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/ecdc9f585b4b4c0d95eeb2bac44fb3c1
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spelling	oai:doaj.org-article:ecdc9f585b4b4c0d95eeb2bac44fb3c12021-12-04T04:34:44ZAn innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)2352-484710.1016/j.egyr.2021.10.108https://doaj.org/article/ecdc9f585b4b4c0d95eeb2bac44fb3c12021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352484721011288https://doaj.org/toc/2352-4847The regasification of liquefied natural gas provides considerable cold energy that would have practical potential in different industrial fields and makes a suitable option for integrating with cryogenic air separation systems that requires a significant amount of energy. In this research, two-column cryogenic air separation units are driven with solar photovoltaic panels to produce oxygen and nitrogen. The gaseous natural gas feeds a molten carbonate fuel cell (MCFC), producing electricity and heat. The heat is recovered by an absorption–compression refrigeration cycle (ACRC) to supply a high-intensity cooling load at −67 °C. The proposed scheme is designed to provide 1781 kmol/h oxygen, 8574 kmol/h nitrogen, 136 MW electrical power, and 13.09 MW cooling load. The thermal efficiency of the whole combined structure and the electrical efficiency of the fuel cell are 51.07% and 51.93%, respectively. The exergy analysis illustrates that the solar photovoltaic collectors and heat exchanges are the two most exergy destructive components compared to others. The exergy efficiency and irreversibility of the developed hybrid process are 52.77% and 160.5 MW, respectively. The effect of working temperatures has been studied on the performance of the molten carbonate fuel cell, including voltage, power density, and efficiency. The exergy and thermal efficiencies of the proposed system increase up to 56.18% and 55.05%, respectively with an increase of LNG molar flow rate from 892 to 992 kmol/h.Bahram GhorbaniZahra RahnavardMohammad Hossein AhmadiAlireza Khatami JouybariElsevierarticlePhotovoltaic panelAir separation unitMolten carbonate fuel cellsRefrigeration systemExergy analysisThermal integrationElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 7, Iss , Pp 8960-8972 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Photovoltaic panel Air separation unit Molten carbonate fuel cells Refrigeration system Exergy analysis Thermal integration Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Photovoltaic panel Air separation unit Molten carbonate fuel cells Refrigeration system Exergy analysis Thermal integration Electrical engineering. Electronics. Nuclear engineering TK1-9971 Bahram Ghorbani Zahra Rahnavard Mohammad Hossein Ahmadi Alireza Khatami Jouybari An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
description	The regasification of liquefied natural gas provides considerable cold energy that would have practical potential in different industrial fields and makes a suitable option for integrating with cryogenic air separation systems that requires a significant amount of energy. In this research, two-column cryogenic air separation units are driven with solar photovoltaic panels to produce oxygen and nitrogen. The gaseous natural gas feeds a molten carbonate fuel cell (MCFC), producing electricity and heat. The heat is recovered by an absorption–compression refrigeration cycle (ACRC) to supply a high-intensity cooling load at −67 °C. The proposed scheme is designed to provide 1781 kmol/h oxygen, 8574 kmol/h nitrogen, 136 MW electrical power, and 13.09 MW cooling load. The thermal efficiency of the whole combined structure and the electrical efficiency of the fuel cell are 51.07% and 51.93%, respectively. The exergy analysis illustrates that the solar photovoltaic collectors and heat exchanges are the two most exergy destructive components compared to others. The exergy efficiency and irreversibility of the developed hybrid process are 52.77% and 160.5 MW, respectively. The effect of working temperatures has been studied on the performance of the molten carbonate fuel cell, including voltage, power density, and efficiency. The exergy and thermal efficiencies of the proposed system increase up to 56.18% and 55.05%, respectively with an increase of LNG molar flow rate from 892 to 992 kmol/h.
format	article
author	Bahram Ghorbani Zahra Rahnavard Mohammad Hossein Ahmadi Alireza Khatami Jouybari
author_facet	Bahram Ghorbani Zahra Rahnavard Mohammad Hossein Ahmadi Alireza Khatami Jouybari
author_sort	Bahram Ghorbani
title	An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
title_short	An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
title_full	An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
title_fullStr	An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
title_full_unstemmed	An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)
title_sort	innovative hybrid structure of solar pv-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (process development and exergy analysis)
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ecdc9f585b4b4c0d95eeb2bac44fb3c1
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An innovative hybrid structure of solar PV-driven air separation unit, molten carbonate fuel cell, and absorption–compression refrigeration system (Process development and exergy analysis)

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