Innovative household systems based on solid oxide fuel cells for the Mediterranean climate

Vialetto, Giulio; Noro, Marco; Rokni, Masoud

doi:10.1016/j.ijhydene.2015.03.085

Cited by 27 publications

(17 citation statements)

References 24 publications

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“…Heat at high temperature (780 °C) produced by SOFC is recovered to feed the Stirling engine. The fuel cell model is already proposed in [25,26,29] with a nominal electric power of 10 kW which is also adapted for the simulation of the system proposed here ( Table 1). The model is slightly modified for using in different configurations in order to simulate different types of fuel in input as described in [29].…”

Section: Solid Oxide Fuel Cell Systemmentioning

confidence: 99%

“…Electric Load Following (ELF) is an operation strategy proposed in [40] and already used by the authors in previous studies [25,26]. This operation strategy considers both user electricity and heat demands together and simultaneously.…”

Section: User Demand (Electric Load Following Strategy)mentioning

confidence: 99%

“…An experimental analysis of some kinds of modules demonstrated that the thermal and electrical efficiencies are determined by mass flow of cooling water, the inlet temperature and the solar radiation [23]. Heat pumps were also proposed to achieve high efficiency system for hot water production in [24] and cogeneration systems by integrating the heating systems were also proposed to attain better electricity and heat demands (for the user) in Northern [25] and Mediterranean [26] climates.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Investigation of a Shared Cogeneration System with Electrical Cars for Northern Europe Climate

Vialetto

Noro

Rokni³

2017

J. sustain. dev. energy water environ. syst.

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Transition to alternative energy systems is indicated by EU Commission as a suitable path to energy efficiency and energy saving in the next years. The aims are to decrease greenhouses gases emissions, relevance of fossil fuels in energy production and energy dependence on extra-EU countries. These goals can be achieved increasing renewable energy sources and/or efficiency on energy production processes. In this paper an innovative micro-cogeneration system for household application is presented: it covers heating, domestic hot water and electricity demands for a residential user. Solid oxide fuel cells, heat pump and Stirling engine are utilised as a system to achieve high energy conversion efficiency. A transition from traditional petrol cars to electric mobility is also considered and simulated here. Different types of fuel are considered to demonstrate the high versatility of the simulated cogeneration system by changing the pre-reformer of the fuel cell. Thermodynamic analysis is performed to prove high efficiency with the different fuels.

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Section: Solid Oxide Fuel Cell Systemmentioning

confidence: 99%

Section: User Demand (Electric Load Following Strategy)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Investigation of a Shared Cogeneration System with Electrical Cars for Northern Europe Climate

Vialetto

Noro

Rokni³

2017

J. sustain. dev. energy water environ. syst.

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“…CAES was taken into account in the feasibility study for building energy retrofitting, [18] but the constraints due to architectural values and a lack of space caused it to be forgotten by many historic building refurbishment interventions [19]. Moreover, the debate between restoration professionals and energy engineers delayed the introduction of innovative solutions [20] and favored conventional approaches such as internal insulations or PV array installations on roofs [21]. Furthermore, the rising request of eco-friendly [22] or even circular materials makes the refurbishment action more difficult [23].…”

Section: Introductionmentioning

confidence: 99%

Small-Scale Compressed Air Energy Storage Application for Renewable Energy Integration in a Listed Building

et al. 2018

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Abstract:In the European Union (EU), where architectural heritage is significant, enhancing the energy performance of historical buildings is of great interest. Constraints such as the lack of space, especially within the historical centers and architectural peculiarities, make the application of technologies for renewable energy production and storage a challenging issue. This study presents a prototype system consisting of using the renewable energy from a photovoltaic (PV) array to compress air for a later expansion to produce electricity when needed. The PV-integrated small-scale compressed air energy storage system is designed to address the architectural constraints. It is located in the unoccupied basement of the building. An energy analysis was carried out for assessing the performance of the proposed system. The novelty of this study is to introduce experimental data of a CAES (compressed air energy storage) prototype that is suitable for dwelling applications as well as integration accounting for architectural constraints. The simulation, which was carried out for an average summer day, shows that the compression phase absorbs 32% of the PV energy excess in a vessel of 1.7 m 3 , and the expansion phase covers 21.9% of the dwelling energy demand. The electrical efficiency of a daily cycle is equal to 11.6%. If air is compressed at 225 bar instead of 30 bar, 96.0% of PV energy excess is stored in a volume of 0.25 m 3 , with a production of 1.273 kWh, which is 26.0% of the demand.

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“…Uncertainties in all of the parameters on the right side of equation 10 could potentially invalidate this metric. While there are many examples of researchers performing similar energy analyses for fuel-cell based micro-cogeneration systems (Bianchi et al, 2012(Bianchi et al, , 2014Napoli et al, 2015;Vialetto et al, 2015;Yaji and Diarra, 2013;Zuliani and Taccani, 2012) based on simulations, none have taken into account the uncertainties on which their models are based, or the uncertainties of the reference efficiencies used, and propagated these uncertainties to their results. Considering that this issue exists for any type of analysis (economic, emissions and energy) and that an energy analysis is the simplest to conduct, it is reasonable to begin by developing a more defensible methodology for performing an energy analysis of a micro-cogeneration system.…”

Section: Energy Analysismentioning

confidence: 99%

Developing a Methodology for Assessing the Energy Potential of Residential Micro-Cogeneration Systems

Johnson¹

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Currently, there is no generally-accepted defensible methodology that can be used to compare the energy performance of micro-cogeneration systems against reference conventional methods for providing residential thermal and electrical demands. In particular, the mathematical models of micro-cogeneration systems being used in this field have uncertainties associated with their predictions. However, these uncertainties have yet to be given serious attention by researchers in this field. This research makes a contribution by developing a more defensible methodology where these model uncertainties are considered.This methodology is demonstrated with a case study where the energy performance of a fuel-cell based micro-cogeneration system serving only domestic hot water demands is compared to the energy performance of reference conventional methods.A condensing tankless water heater and a central gas-fired combined-cycle plant are considered as these reference conventional methods for providing domestic hot water demands and electrical demands respectively. The simulation results demonstrated that if model uncertainties were ignored, it would have been possible to demonstrate that the considered micro-cogeneration system was more efficient than the reference conventional methods by serving only average consumption levels of domestic hot water. However, if model uncertainties were considered, the micro-cogeneration system could not reliably be shown to be more efficient than the reference conventional methods by serving the domestic hot water needs of a single house.ii

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Innovative household systems based on solid oxide fuel cells for the Mediterranean climate

Cited by 27 publications

References 24 publications

Thermodynamic Investigation of a Shared Cogeneration System with Electrical Cars for Northern Europe Climate

Thermodynamic Investigation of a Shared Cogeneration System with Electrical Cars for Northern Europe Climate

Small-Scale Compressed Air Energy Storage Application for Renewable Energy Integration in a Listed Building

Developing a Methodology for Assessing the Energy Potential of Residential Micro-Cogeneration Systems

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