Exergoeconomic optimization of coaxial tube evaporators for cooling of high pressure gaseous hydrogen during vehicle fuelling

Jensen, Jonas Kjær; Rothuizen, Erasmus Damgaard; Markussen, Wiebke Brix

doi:10.1016/j.enconman.2014.02.023

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…Advancements in heat exchanger technology have led to a substantial increase in the efficiency of pre-cooling units. Progress in materials and design enables enhanced heat transfer, which is crucial for rapidly and evenly cooling hydrogen [80][81][82][83]. Recent designs prioritize compactness and modularity, facilitating the integration of pre-cooling units into various hydrogen refueling stations, including those with limited space.…”

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confidence: 99%

An Exploration of Safety Measures in Hydrogen Refueling Stations: Delving into Hydrogen Equipment and Technical Performance

Genovese,

Blekhman,

Fragiacomo

2024

Hydrogen

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The present paper offers a thorough examination of the safety measures enforced at hydrogen filling stations, emphasizing their crucial significance in the wider endeavor to advocate for hydrogen as a sustainable and reliable substitute for conventional fuels. The analysis reveals a wide range of crucial safety aspects in hydrogen refueling stations, including regulated hydrogen dispensing, leak detection, accurate hydrogen flow measurement, emergency shutdown systems, fire-suppression mechanisms, hydrogen distribution and pressure management, and appropriate hydrogen storage and cooling for secure refueling operations. The paper therefore explores several aspects, including the sophisticated architecture of hydrogen dispensers, reliable leak-detection systems, emergency shut-off mechanisms, and the implementation of fire-suppression tactics. Furthermore, it emphasizes that the safety and effectiveness of hydrogen filling stations are closely connected to the accuracy in the creation and upkeep of hydrogen dispensers. It highlights the need for materials and systems that can endure severe circumstances of elevated pressure and temperature while maintaining safety. The use of sophisticated leak-detection technology is crucial for rapidly detecting and reducing possible threats, therefore improving the overall safety of these facilities. Moreover, the research elucidates the complexities of emergency shut-off systems and fire-suppression tactics. These components are crucial not just for promptly managing hazards, but also for maintaining the station’s structural soundness in unanticipated circumstances. In addition, the study provides observations about recent technical progress in the industry. These advances effectively tackle current safety obstacles and provide the foundation for future breakthroughs in hydrogen fueling infrastructure. The integration of cutting-edge technology and materials, together with the development of upgraded safety measures, suggests a positive trajectory towards improved efficiency, dependability, and safety in hydrogen refueling stations.

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confidence: 99%

An Exploration of Safety Measures in Hydrogen Refueling Stations: Delving into Hydrogen Equipment and Technical Performance

Genovese,

Blekhman,

Fragiacomo

2024

Hydrogen

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“…This represents the amount of exergy required to produce a physical flow in the system (Lee, Ahn, Morosuk, & Tsatsaronis, 2014;Manesh et al, 2014). There are several types of studies related to this exergoeconomic analysis (Lamas, 2013;Esfahani & Yoo, 2013;Jensen, Rothuizen, & Markussen, 2014;Chan, Veje, Willatzen, & Andersen, 2014;Rivarolo, Greco, & Massardo, 2013;Cavalcanti & Motta, 2015). These show the importance of this analysis for improving the performance of the cogeneration system.…”

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confidence: 99%

<b>Techno-economic and Exergoeconomic Analysis of a micro cogeneration system for a residential use

Ochoa¹,

Dutra²,

Guerrero³

et al. 2016

Acta Sci. Technol.

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ABSTRACT. The aim of the study is to present an economic analysis of a micro cogeneration system using financial analysis (energy view) and exergoeconomic analysis (exergy view). This system uses a natural gas-fueled 30 kW microturbine to generate electricity, and to produce hot water by recovering energy from the waste heat in the exhaust gases by using a heat exchanger, which serves as the drive source of an absorption chiller with a nominal capacity of 35 kW. In the financial analysis economic indicators such as payback, net present value and internal rate of return were used to verify the economic feasibility of this system, while in the exergoeconomic analysis, the Theory of Exergetic Cost was used to determine the exergetic monetary costs. A thermodynamic model was developed on the EES-32 (Engineering Equation Solver) platform. On applying the financial analysis, the results showed that the micro cogeneration system is feasible with positive values of R$ 206,540.00 for NPV, 27% IRR and a 6-year payback. Based on the exergoeconomic analysis, the cogeneration system is also feasible since the monetary cost of the electricity is lower than that charged by the electricity company but this is only possible after the 5 th year.Keywords: net present value, IRR, payback, exergetic costs.Análise Tecno-econômica e Exergoeconomica de um sistema de microcogeração de para uso residencial RESUMO. Este trabalho tem como finalidade o estudo econômico de um sistema de microcogeração de energia utilizando a análise financeira (visão energética) e a análise exergoeconômica (visão exergética). Este sistema utiliza gás natural como combustível primário para o acionamento de uma microturbina de 30 kW para produzir eletricidade, e água quente pelo do reaproveitamento da energia do calor residual dos gases de escape por meio de um recuperador de calor, que serve como fonte de acionamento de um chiller de absorção de 35 kW de capacidade nominal. Na análise financeira foram utilizados os indicadores econômicos tais como: o payback, o valor presente liquido, e a taxa interna de retorno, para verificar a viabilidade econômica do sistema de microcogeração, enquanto na análise exergoeconômica, foi considerada a teoria de custos exergéticos para a determinação dos custos monetários exergéticos. Foi desenvolvido um modelo termodinâmico na plataforma EES-32 (Engineering Equation Solver). Da aplicação da análise financeira os resultados mostraram que o sistema de microcogeração é viável com valores positivos de R$ 206.540,00 de VPL, 27% de TIR, 6 anos de retorno do capital. A partir da análise exergoeconômica, o sistema de cogeração também mostrou-se viável já que o custo monetário da eletricidade é menor do fornecido pela companhia de eletricidade, mas isso é possível após o 5º ano.Palavras-chave: valor presente liquido, TIR, payback, custos exergéticos.

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Structure optimization and design of zigzag mini-channel for printed circuit heat exchanger

Qin,

Zhang,

Jiang

et al. 2025

Applied Thermal Engineering

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Exergoeconomic optimization of coaxial tube evaporators for cooling of high pressure gaseous hydrogen during vehicle fuelling

Cited by 10 publications

References 22 publications

An Exploration of Safety Measures in Hydrogen Refueling Stations: Delving into Hydrogen Equipment and Technical Performance

An Exploration of Safety Measures in Hydrogen Refueling Stations: Delving into Hydrogen Equipment and Technical Performance

<b>Techno-economic and Exergoeconomic Analysis of a micro cogeneration system for a residential use

Structure optimization and design of zigzag mini-channel for printed circuit heat exchanger

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