Thermodynamic and exergy evaluation of a novel integrated hydrogen liquefaction structure using liquid air cold energy recovery, solid oxide fuel cell and photovoltaic panels

Taghavi, Masoud; Salarian, Hesamoddin; Ghorbani, Bahram

doi:10.1016/j.jclepro.2021.128821

Cited by 30 publications

(9 citation statements)

References 41 publications

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“…Taghavi et al used LAC recovery to precool the H 2 liquefaction process. They used the six J–B cascade cycles to cool and liquefy H 2 .…”

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 99%

“…Liquid–air is produced utilizing LH 2 cold energy in the LH 2 regasification step and can be returned to the H 2 gas liquefaction process using the LH 2 empty vessel in the LH 2 supply chain. Therefore, the LH 2 cold energy can be recycled in the LH 2 supply chain, even if the H 2 liquefaction and LH 2 regasification steps occur in remote areas Figure depicts the use of liquid–air in the LH 2 supply chain, specifically for cold energy recovery.…”

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 99%

“…H 2 storage can be categorized into physical-based (compressed gas/liquid/two phase), material-based (physical/chemical adsorption), and chemical-based methods (reformed organic fuels/liquid organic H 2 carriers (LOHCs)). − Figure illustrates various methods of H 2 storage based on physical, material, and chemical categorization. Standard H 2 storage tanks are used at an operating pressure of 350–700 bar and have not yet reached the storage gravimetric/volumetric target of 6.5 wt % or 0.050 kgH 2 /L for the desired driving range (the Department of Energy (DOE) targets for on-board H 2 storage). − The main challenges for liquid H 2 (LH 2 ) storage include its high specific energy consumption (SEC), low exergy efficiency, and inevitable boil-off gas (IBOG) losses. , The densities of liquid H 2 and high-pressure gas, are, respectively 70.8 and under 40 kg/m 3 . For instance, the densities of H 2 at 35 and 70 bar are around 23 and 38 kg/m 3 , respectively .…”

Section: Introductionmentioning

confidence: 99%

“…Several strategies have been utilized to decrease the SEC in H 2 liquefaction systems. These techniques include using absorption and ejector cooling cycles, − LN 2 regasification, ,− LNG/LAC energy recovery, ,− cascade liquefaction process, ,, multicomponent refrigerant cycle, − integration with other integrated structures, , optimization algorithms, , combined with renewable energy sources, − and the pinch approach. , Yilmaz et al developed seven H 2 production and liquefaction cycles according to geothermal energy, the absorption cooling cycle (ACC) to precooling, and the L–H process for liquefaction. The price of H 2 liquefaction was calculated to be 0.98–2.62 $/kgLH 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Also, the levelized cost of liquid H 2 (LCOH) decreased from 6.08 $/kgLH 2 for the reference system to 3 $/kgLH 2 for the hybrid process, representing a remarkable savings of 51% in the cost of liquid H 2 production. Taghavi et al . revealed that using the LAC recovery system for the precooling in the H 2 liquefaction cycle leads to a reduction of the SEC, coefficient of performance (COP), and exergy efficiency of 6.916%, 22.04%, and 25.65%, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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The main challenges of liquid hydrogen (H2) storage as one of the most promising techniques for large-scale transport and long-term storage include its high specific energy consumption (SEC), low exergy efficiency, high total expenses, and boil-off gas losses. This article reviews different approaches to improving H2 liquefaction methods, including the implementation of absorption cooling cycles (ACCs), ejector cooling units, liquid nitrogen/liquid natural gas (LNG)/liquid air cold energy recovery, cascade liquefaction processes, mixed refrigerant systems, integration with other structures, optimization algorithms, combined with renewable energy sources, and the pinch strategy. This review discusses the economic, safety, and environmental aspects of various improvement techniques for H2 liquefaction systems in more detail. Standards and codes for H2 liquefaction technologies are presented, and the current status and future potentials of H2 liquefaction processes are investigated. The cost-efficient H2 liquefaction systems are those with higher production rates (>100 tonne/day), higher efficiency (>40%), lower SEC (<6 kWh/kgLH2), and lower investment costs (1–2 $/kgLH2). Increasing the stages in the conversion of ortho- to para-H2 lowers the SEC and increases the investment costs. Moreover, using low-temperature waste heat from various industries and renewable energy in the ACC for precooling is significantly more efficient than electricity generation in power generation cycles to be utilized in H2 liquefaction cycles. In addition, the substitution of LNG cold recovery for the precooling cycle is associated with the lower SEC and cost compared to its combination with the precooling cycle.

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“…Taghavi et al used LAC recovery to precool the H 2 liquefaction process. They used the six J–B cascade cycles to cool and liquefy H 2 .…”

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 99%

Section: Different Methods To Improve the Performance Of Hydrogen Liq...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

et al. 2023

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A review of the energy recovery and energy pressure of liquid

Zhang

Xue

et al. 2023

Energy Science & Engineering

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Due to the rapid development of today's industry, it not only greatly accelerates the consumption of energy, but also causes serious pollution to the environment. Therefore, reducing energy waste and recovering energy has become an important research direction today. This paper introduces the future development trend of renewable energy, discusses the progress of recovery of nonpolluting energy such as marine, bioenergy and thermal energy, and analyzes the efficiency and social benefits of various types of energy recovery. Energy recovery methods for natural gas pipelines are briefly analyzed, and current research advances in energy pressure recovery devices are provided, leading to a summary of methods to improve the efficiency of fluid energy recovery. Finally, it is concluded that although the current energy sources are diversified, the most valued energy sources at present and in the future should be solar energy and ocean, which are infinitely recyclable. This paper will benefit researchers to further understand and study the various aspects of energy recovery.

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Investigation of a novel hybrid LNG waste heat-/wind-driven hydrogen liquefaction system: exergoeconomic analysis and multi-criteria optimization

Zarsazi

Sadeghi

Moghimi

2022

J Therm Anal Calorim

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Thermodynamic and exergy evaluation of a novel integrated hydrogen liquefaction structure using liquid air cold energy recovery, solid oxide fuel cell and photovoltaic panels

Cited by 30 publications

References 41 publications

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review

A review of the energy recovery and energy pressure of liquid

Investigation of a novel hybrid LNG waste heat-/wind-driven hydrogen liquefaction system: exergoeconomic analysis and multi-criteria optimization

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