Exergetic Aspects of Hydrogen Energy Systems—The Case Study of a Fuel Cell Bus

Nanaki, Evanthia A.; Koroneos, C.

doi:10.3390/su9020276

Cited by 10 publications

(6 citation statements)

References 26 publications

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“…One of the most eco-friendly and least pollutant renewable source as well, known is hydrogen. In recent years, the studies on fuel cell-based energy systems have led liquefied hydrogen fuel to be considered as an important alternative fuel with feasible outcomes [7][8][9][10][11][12][13][14][15], but the disadvantages that have been waiting to be solved still remain [16][17][18][19][20][21]. Hydrogen should be produced because it does not exist in nature by itself.…”

Section: Introductionmentioning

confidence: 99%

Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

et al. 2020

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This study dealt with evaluating the (J85-GE-5H) military turbojet engine (TJE) in terms of exergetic and advanced exergetic analyses at Military (MIL) and Afterburner (AB) process modes by utilizing kerosene (JP-8) and hydrogen (H2) fuels. First, exergy and advanced exergy analyses of the engine were performed using JP-8 fuel as per actual engine operating conditions. These analyses of the turbojet engine using hydrogen fuel were also examined parametrically. The performance evaluation of the engine was lastly executed by comparing the obtained results for both fuels. Based on the parametric studies undertaken, the entire engine’s exergetic efficiency with JP-8 was reckoned 30.85% at the MIL process mode while it was calculated as 16.98% at the AB process mode. With the usage of H2, the efficiencies of the engine decreased to 28.62% and 15.33% for the above mentioned two modes, respectively. As the supreme exergy destructions occurred in the combustion chamber (CC) and afterburner exhaust duct (ABED) segments, the new technological developments should be considered to design more efficient engines. As a result, the engine worked less efficiently with hydrogen fuel due to the enhancement in exergy destructions. Conversely, the greenhouse gas (GHG) emission parameters lessened with the utilization of H2 fuel.

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Section: Introductionmentioning

confidence: 99%

Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

et al. 2020

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“…Technical information on H 2 FC buses and their use in demonstration projects are also available [11][12][13][14][15]. Exergetic evaluation of H 2 FC buses have also been conducted [16]. Work on effects of light weighting has also been performed for automotive applications [17,18] as well as dealing with the challenges for modelling and integrating of light weighting into concept design [19].…”

Section: Introductionmentioning

confidence: 99%

Sustainability Assessment of Fuel Cell Buses in Public Transport

Lozanovski

Whitehouse

et al. 2018

Sustainability

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Hydrogen fuel cell (H 2 FC) buses operating in every day public transport services around Europe are assessed for their sustainability against environmental, economic and social criteria. As part of this assessment the buses are evaluated against diesel buses both in terms of sustainability and in terms of meeting real world requirements with respect to operational performance. The study concludes that H 2 FC buses meet operability and performance criteria and are sustainable environmentally when 'green' hydrogen is used. The economic sustainability of the buses, in terms of affordability, achieves parity with their fossil fuel equivalent by 2030 when the indirect costs to human health and climate change are included. Societal acceptance by those who worked with and used the buses supports the positive findings of earlier studies, although satisfactory operability and performance are shown to be essential to positive attitudes. Influential policy makers expressed positive sentiments only if 'green' hydrogen is used and the affordability issues can be addressed. No "show-stopper" is identified that would prevent future generations from using H 2 FC buses in public transport on a broad scale due to damage to the environment or to other factors that impinge on quality of life.

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“…In this context, the results of the review developed above are suitable and significant for a wide spectrum of literature-oriented approaches toward RES utility among various HES. Among these, the electrifying transportation sector, which is a promising approach to alleviating climate change issues arising from increased emissions, is noteworthy [71]. In this study, the examined HES can produce hydrogen, using RES, for the transportation sector (in buses).…”

Section: Hes-res In Practicementioning

confidence: 99%

Literature Review of Hydrogen Energy Systems and Renewable Energy Sources

Kyriakopoulos,

Aravossis

2023

Energies

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The role of hydrogen as a clean energy source is a promising but also a contentious issue. The global energy production is currently characterized by an unprecedented shift to renewable energy sources (RES) and their technologies. However, the local and environmental benefits of such RES-based technologies show a wide variety of technological maturity, with a common mismatch to local RES stocks and actual utilization levels of RES exploitation. In this literature review, the collected documents taken from the Scopus database using relevant keywords have been organized in homogeneous clusters, and are accompanied by the registration of the relevant studies in the form of one figure and one table. In the second part of this review, selected representations of typical hydrogen energy system (HES) installations in realistic in-field applications have been developed. Finally, the main concerns, challenges and future prospects of HES against a multi-parametric level of contributing determinants have been critically approached and creatively discussed. In addition, key aspects and considerations of the HES-RES convergence are concluded.

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Exergetic Aspects of Hydrogen Energy Systems—The Case Study of a Fuel Cell Bus

Cited by 10 publications

References 26 publications

Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

Sustainability Assessment of Fuel Cell Buses in Public Transport

Literature Review of Hydrogen Energy Systems and Renewable Energy Sources

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