Modeling and optimization of a heat-pump-assisted high temperature proton exchange membrane fuel cell micro-combined-heat-and-power system for residential applications

Arsalis, Alexandros; Kær, Søren Knudsen; Nielsen, Mads Pagh

doi:10.1016/j.apenergy.2015.03.031

Cited by 59 publications

(14 citation statements)

References 17 publications

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“…Fuel cell technology has been proposed at the kW to the MW scale in a number of proposed systems. In lower temperature proton exchange membrane fuel cells (PEMFCs), CHP systems have been primarily applied at the kW scale, for smaller residential applications, where low-grade heat (recovered from the fuel cell exhaust) is usually adequate to cover residential load profiles, such as space heating and domestic hot water preparation [4,5]. These systems are sometimes operated jointly with vapor compression heat pumps to boost heat generation and/or to provide space cooling [6].…”

Section: Introductionmentioning

confidence: 99%

A Decentralized, Hybrid Photovoltaic-Solid Oxide Fuel Cell System for Application to a Commercial Building

Arsalis

Georghiou

2018

Energies

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New energy solutions are needed to decrease the currently high electricity costs from conventional electricity-only central power plants in Cyprus. A promising solution is a decentralized, hybrid photovoltaic-solid oxide fuel cell (PV-SOFC) system. In this study a decentralized, hybrid PV-SOFC system is investigated as a solution for useful energy supply to a commercial building (small hotel). An actual load profile and solar/weather data are fed to the system model to determine the thermoeconomic characteristics of the proposed system. The maximum power outputs for the PV and SOFC subsystems are 70 and 152 kWe, respectively. The average net electrical and total efficiencies for the SOFC subsystem are 0.303 and 0.700, respectively. Maximum net electrical and total efficiencies reach up to 0.375 and 0.756, respectively. The lifecycle cost for the system is 1.24 million USD, with a unit cost of electricity at 0.1057 USD/kWh. In comparison to the conventional case, the unit cost of electricity is about 50% lower, while the reduction in CO2 emissions is about 36%. The proposed system is capable of power and heat generation at a lower cost, owing to the recent progress in both PV and fuel cell technologies, namely longer lifetime and lower specific cost.

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Section: Introductionmentioning

confidence: 99%

A Decentralized, Hybrid Photovoltaic-Solid Oxide Fuel Cell System for Application to a Commercial Building

Arsalis

Georghiou

2018

Energies

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“…Recovering the heat generated by the fuel cell and supplying it to an on-site thermal load could enhance the overall energy efficiency of the fuel cell, in heat and power supply applications, to around 70% or more [28,31]. For instance, combined heat and power (CHP) fuel cell systems have been studied to supply power and heat for residential applications [32,33], and the integration of the fuel cell heat with an auxiliary boiler [34] or an electric heat pump [35] have been examined. However, hydrogen in such cases was produced on-site from natural gas in a steam reforming process and not through renewables.…”

Section: Solar-hydrogen Combined Heat and Power Systemsmentioning

confidence: 99%

Transient simulation modelling and energy performance of a standalone solar-hydrogen combined heat and power system integrated with solar-thermal collectors

Assaf

Shabani

2016

Applied Energy

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“…Other researchers have optimized the system performance [21][22][23]. Rabiu et al [21] reported on application of heat integration technique to optimize the heat exchanger network of a 2 kW system.…”

Section: Introductionmentioning

confidence: 99%

“…The authors showed that the combination of these two techniques could lead to a lower HEN annual cost of US$8,147/year without affecting electrical efficiency. Arsalis et al [23] have optimized a heat-pump assisted cogeneration system by considering thermophysical parameters at different loads. Najafi et al [24] explore the use of operating strategies to mitigate the decay of electrical and thermal power output in the first 15,000 hours of a 30 kW plant.…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis of a High Temperature PEM Fuel Cell Based Microcogeneration System

Nomnqa

Ikhu-Omoregbe

Rabiu

2016

International Journal of Chemical Engineering

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This study focuses on performance analysis of a 1 kWemicrocogeneration system based on a high temperature proton exchange membrane (HT-PEM) fuel cell by means of parametric investigation. A mathematical model for a system consisting of a fuel processor (steam reforming reactor and water-gas shift reactor), a HT-PEM fuel cell stack, and the balance-of-plant components was developed. Firstly, the fuel processor performance at different fuel ratios and equivalence ratio was examined. It is shown that high fuel ratios of 0.9–0.95 and equivalence ratios of less than 0.56 are suitable for acceptable carbon monoxide content in the synthetic gas produced. Secondly, a parametric study of the system performance at different fuel and equivalence ratios using key system operating parameters was conducted. Steam-to-carbon ratio, stack operating temperature, and anode stoichiometry were varied to observe the changes in the microcogeneration system. The analysis shows that the system can reach electrical and cogeneration efficiencies of 30% and 84%, respectively.

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Modeling and optimization of a heat-pump-assisted high temperature proton exchange membrane fuel cell micro-combined-heat-and-power system for residential applications

Cited by 59 publications

References 17 publications

A Decentralized, Hybrid Photovoltaic-Solid Oxide Fuel Cell System for Application to a Commercial Building

A Decentralized, Hybrid Photovoltaic-Solid Oxide Fuel Cell System for Application to a Commercial Building

Transient simulation modelling and energy performance of a standalone solar-hydrogen combined heat and power system integrated with solar-thermal collectors

Parametric Analysis of a High Temperature PEM Fuel Cell Based Microcogeneration System

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