Analysis and optimization of a fuel cell integrated with series two-stage organic Rankine cycle with zeotropic mixtures

Azad, Amirreza; Fakhari, Iman; Ahmadi, Pouria; Javanı, Nader

doi:10.1016/j.ijhydene.2021.02.061

Cited by 52 publications

(5 citation statements)

References 51 publications

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“…This goal can be achieved by increasing investments in sustainable technologies such as, fuel cells that simultaneously produce electricity and heat [4]. Amongst existing fuel cells, the proton exchange membrane fuel cell (PEMFC) is becoming attractable owing to its various applications and advantages, low-temperature operation, fast start-up, short response time and high power density [5,6]. Nevertheless, only about 50% of the total input energy of hydrogen is converted into electricity, the remaining fraction being lost as heat [7].…”

Section: Erevmentioning

confidence: 99%

“…The net heat production of the stack (𝑄 𝑛𝑒𝑡 ) due to the electrochemical reaction is determined by an energy balance of the system [5,23].…”

Section: The Pemfc Stack Modelmentioning

confidence: 99%

“…The sensible and latent heat dissipated and absorbed during the process can be presented in the following expression [5,11,23]:…”

Section: The Pemfc Stack Modelmentioning

confidence: 99%

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Performance prediction, optimization and economic analysis of a combined PEMFC-ORC system

Abdi,

Ketfi,

Mapengo

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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The present paper is devoted to prediction of the performance of a combined system, consisting of a proton exchange membrane fuel cell integrated with an organic Rankine cycle (PEMFC-ORC). The PEMFC waste heat is recovered by an ORC system for electricity generation. The R123 was firstly selected as a working fluid which improved the net power and overall efficiency of the combined system by 13.76% and 5.19%, respectively, in comparison with the PEMFC system. Here, a validation study was conducted by comparing the obtained results with a literature based case. It was also outlined how stack operating pressures and temperatures affect the system performances. Moreover, an optimization study was performed to select the operating parameters values that maximize the system's power output. Accordingly, the net electrical output and overall efficiency of the system using the basic working fluid R123, have been improved by 16.17% and 5.47%, respectively.

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Section: Erevmentioning

confidence: 99%

“…The net heat production of the stack (𝑄 𝑛𝑒𝑡 ) due to the electrochemical reaction is determined by an energy balance of the system [5,23].…”

Section: The Pemfc Stack Modelmentioning

confidence: 99%

See 1 more Smart Citation

Performance prediction, optimization and economic analysis of a combined PEMFC-ORC system

Abdi,

Ketfi,

Mapengo

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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“…The maximum exergy efficiency was 21.9%, which was 12.7% higher than that obtained using just the basic ORC. Recently, Azad et al [147], analyzed the integration of a two-stage in-series ORC and a fuel cell. This cycle utilized a PEMFC for electricity generation, an ORC with zeotropic mixtures for power production, and a thermoelectric generator instead of a condenser in the ORC as a heat recuperator used to produce electricity and minimize heat loss.…”

Section: Hybrid Orcmentioning

confidence: 99%

A Comprehensive Review of Organic Rankine Cycles

et al. 2023

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It has been demonstrated that energy systems driven by conventional energy sources like fossil fuels are one of the main causes of climate change. Organic Rankine cycles can help to reduce that impact, as they can be operated by using the industrial waste heat of renewable energies. The present study presents a comprehensive bibliographic review of organic Rankine cycles. The study not only actualizes previous reviews that mainly focused on basic cycles operating on subcritical or supercritical conditions, but also includes the analysis of novel cycles such as two-stage and hybrid cycles and the used fluids. Recuperative and regenerative cycles are more efficient than reheated and basic single-stage cycles. The use of two-stage cycles makes it possible to achieve higher thermal efficiencies and net power outputs of up to 20% and 44%, respectively, compared with those obtained with single-stage cycles. Theoretical studies show that hybrid systems, including Brayton and organic Rankine cycles, are the most efficient; however, they require very high temperatures to operate. Most organic Rankine cycle plants produce net power outputs from 1 kW up to several tens of kW, mainly using microturbines and plate heat exchangers.

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“…The same research has been carried out by researchers regarding the applications of this TEG module by utilizing the waste heat from the engine block [8]. Almost all TEG research is applied to the small components to facilitate the installation process, collect data on power output or efficiency, and determine cooling methods [9][10][11]. An unknown scaling method in heat exchanger chimney studies by utilizing waste heat using TEG modules was carried out [12,13].…”

Section: Introductionmentioning

confidence: 99%

The Chimney Heat Potential to be Converted into Electrical Energy with Thermoelectric Generator: Dimensionless Analysis

Bizzy

Mataram

Firmansyah

et al. 2023

ARFMTS

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The gas-steam power plant combines a gas power plant and a steam power plant, where Heat Recovery Steam Generator (HRSG) is a unit for generating steam. The waste heat from this system is channelled to the chimney with a Thermoelectric Generator (TEG) module to generate electrical energy. TEG uses the waste heat from the thermal conduction process from the chimney wall, where the height, diameter, and velocity variables are considered for analysis. To optimize this analysis, we used dimensional analysis to get a laboratory-scale system, and the method used the matrix dimensionless of the balance energy equation. As a result of the investigation, the calculation of chimney heat potential is obtained; the condition temperature will increase when velocity increases and the value of diameter and height decrease, then there is have an error about 14% from laboratory-scale design of chimney.

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Analysis and optimization of a fuel cell integrated with series two-stage organic Rankine cycle with zeotropic mixtures

Cited by 52 publications

References 51 publications

Performance prediction, optimization and economic analysis of a combined PEMFC-ORC system

Performance prediction, optimization and economic analysis of a combined PEMFC-ORC system

A Comprehensive Review of Organic Rankine Cycles

The Chimney Heat Potential to be Converted into Electrical Energy with Thermoelectric Generator: Dimensionless Analysis

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