Thermodynamic modeling and analysis of a novel PEMFC-ORC combined power system

Liu, Guokun; Qin, Yanzhou; Wang, Jianchao; Liu, Can; Yin, Yifan; Zhao, Jian; Yin, Yan; Zhang, Xiangwen; Otoo, Obed

doi:10.1016/j.enconman.2020.112998

Cited by 75 publications

(22 citation statements)

References 35 publications

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“…(1) The system works under steady-state conditions, and the heat loss and pressure of the system loss are neglected [60,61]. (2) The ambient air temperature is 298.15 K, the pressure is 101 kPa [60].…”

Section: System Descriptionmentioning

confidence: 99%

Thermodynamic Modeling and Performance Analysis of Vehicular High-Temperature Proton Exchange Membrane Fuel Cell System

et al. 2022

Membranes

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Since the high temperature proton exchange membrane fuel cells (HT-PEMFC) stack require a range of auxiliary equipments to maintain operating conditions, it is necessary to consider operation of related components in the design of HT-PEMFC systems. In this paper, a thermodynamic model of a vehicular HT-PEMFC system using phosphoric acid doped polybenzimidazole membrane is developed. The power distribution and exergy loss of each component are derived according to thermodynamic analysis, where the stack and heat exchanger are the two components with the greatest exergy loss. In addition, ecological functions and improvement potentials are proposed to evaluate the system performance better. On this basis, the effects of stack inlet temperature, pressure, and stoichiometric on system performance are analyzed. The results showed that the energy efficiency, exergy efficiency and net output power of the system achieved the maximum when the inlet gases temperature is 406.1 K. The system performance is better when the cathode inlet pressure is relatively low and the anode inlet pressure is relatively high. Moreover, the stoichiometry should be reduced to improve the system output performance on the basis of ensuring sufficient gases reaction in the stack.

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Section: System Descriptionmentioning

confidence: 99%

Thermodynamic Modeling and Performance Analysis of Vehicular High-Temperature Proton Exchange Membrane Fuel Cell System

et al. 2022

Membranes

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“…Heat and pressure losses for this fluid will be neglected for simplicity. [25]. The cycle performs in a similar manner to a Rankine cycle.…”

Section: Fundamentals Of An Organic Rankine Cycle (Orc) Organic Rankine Cyclementioning

confidence: 99%

Modeling and Simulation of a Proton Exchange Membrane Fuel Cell Alongside a Waste Heat Recovery System Based on the Organic Rankine Cycle in MATLAB/SIMULINK Environment

et al. 2021

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The proton exchange membrane fuel cell (PEMFC) is the fastest growing fuel cell technology on the market. Due to their sustainable nature, PEMFCs are widely adopted as a renewable energy resource. Fabricating a PEMFC is a costly process; hence, mathematical modeling and simulations are necessary in order to fully optimize its performance. Alongside this, the feasibility of a waste heat recovery system based on the organic Rankine cycle is also studied and power generation for different operating conditions is presented. The fuel cell produces a power output of 1198 W at a current of 24A. It has 50% efficiency and hence produces an equal amount of waste heat. That waste heat is used to drive an organic Rankine cycle (ORC), which in turn produces an additional 428 W of power at 35% efficiency. The total extracted power hence stands at 1626 W. MATLAB/Simulink R2016a is used for modeling both the fuel cell and the organic Rankine cycle.

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“…Here, the electrolyzer control ( Figure 5(c)) becomes active. The equation of P Load is given in (10).…”

Section: Mode 1: Power Surplus Mode (P Pv > P Load )mentioning

confidence: 99%

“…PEMFC is a clean energy source, allowing bi‐directional energy flow and storing and generating electricity. The generation occurs owing to the energy released caused by chemical reactions [10]. Hydrogen, fuel for PEMFC, is stored in the hydrogen storage system (HSS).…”

Section: Introductionmentioning

confidence: 99%

“…Electrolyzers require 48–55 kWh of electricity to supply 1 kg of hydrogen at an efficiency of 65–70%, although the overall production of industrial hydrogen using electrolysis is 4% worldwide [12] owing to the economics involved. However, PEMFC cannot feed dynamic loads owing to difficulties in cold, slow ramp rates, and fluctuations in output voltage ( V FC ) [10]. In addition, the current produced by PEMFC ( i fc ) contains high low‐frequency ripples, rendering the system unstable, especially in a grid‐connected mode [13].…”

Section: Introductionmentioning

confidence: 99%

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Energy management and economic analysis of multiple energy storage systems in solar PV/PEMFC hybrid power systems

Das

Singh

Karuppanan

et al. 2020

Energy Conversion and Economics

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This study proposes an energy management system (EMS) to manage a standalone hybrid power system (HPS) comprising solar photovoltaic (PV), proton exchange membrane fuel cell (PEMFC), and a battery energy storage. The battery and a hydrogen storage system in PEMFC provide short-and long-term electricity storage, respectively. The EMS ensures electrical efficiency during normal/abnormal operation of the HPS and related limitations, namely unexpected variations in solar irradiance and loads, PEMFC cold start, and battery charging status. The proposed EMS is evaluated using mathematical modelling, simulation studies, and real-time digital simulation. The results show that the proposed EMS is resilient to complex solar PV/load power changes and keeps the dc-link voltage in place. The viability of the proposed HPS is analysed using daily average solar insolation and load profiles. This analysis is useful to schedule problems of load/generation. The economic analysis of the proposed EMS, done using Homer pro, ensures that the HPS operates cost-effectively.

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Thermodynamic modeling and analysis of a novel PEMFC-ORC combined power system

Cited by 75 publications

References 35 publications

Thermodynamic Modeling and Performance Analysis of Vehicular High-Temperature Proton Exchange Membrane Fuel Cell System

Thermodynamic Modeling and Performance Analysis of Vehicular High-Temperature Proton Exchange Membrane Fuel Cell System

Modeling and Simulation of a Proton Exchange Membrane Fuel Cell Alongside a Waste Heat Recovery System Based on the Organic Rankine Cycle in MATLAB/SIMULINK Environment

Energy management and economic analysis of multiple energy storage systems in solar PV/PEMFC hybrid power systems

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