Thermodynamic performance study of the MR SOFC-HAT-CCHP system

Zhao, Hongbin; Hou, Qinlong

doi:10.1016/j.ijhydene.2018.12.129

Cited by 47 publications

(3 citation statements)

References 37 publications

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“…Numerical simulations were carried out using Aspen Plus, and the results highlighted that SOFC-MGT was more efficient with respect to both simple MGT and SOFC. Zhao et al [71] proposed a hybrid SOFC-HAT-CCHP (combined cooling, heating, and power) system based on methanol-reforming. The model is based on Aspen Plus and the main outcome shows that the introduction of humid air turbines increased the power generation reducing at the same time the coal consumption rate.…”

Section: Sofc-mgt Systemsmentioning

confidence: 99%

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Reale

Sannino

2022

Energies

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In the context of the great research pulse on clean energy transition, distributed energy systems have a key role, especially in the case of integration of both renewable and traditional energy sources. The stable interest in small-scale gas turbines can further increase owing to their flexibility in both operation and fuel supply. Since their not-excellent electrical efficiency, research activities on micro gas turbine (MGT) are focused on the performance improvements that are achievable in several ways, like modifying the Brayton cycle, integrating two or more plants, using cleaner fuels. Hence, during the last decades, the growing interest in MGT-based energy systems encouraged the development of many numerical approaches aimed to provide a reliable and effective prediction of the energy systems' behavior. Indeed, numerical modeling can help to individuate potentialities and issues of each enhanced layout or hybrid energy system, and this review aims to discuss the various layout solutions proposed by researchers, with particular attention to recent publications, highlighting the adopted modeling approaches and methods.

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Section: Sofc-mgt Systemsmentioning

confidence: 99%

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Reale

Sannino

2022

Energies

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“…The results showed that the system's efficiency for the cooling, heating, and overall CCHP efficiency would be 58%, 60%, and nearly 60%, respectively. Zhao and Hou 26 assessed a SOFC‐CCHP system based on the solar methanol‐reforming unit. The results showed that the system's second law efficiency and energy efficiency would be 63.0% and 87.1%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic and environmental optimisations of multigeneration biomass‐based solid oxide fuel cell systems with reduced CO ₂ emissions

2021

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Summary In this research, four multigeneration systems comprising of a syngas‐fuelled solid oxide fuel cell, double‐effect absorption chiller (first configuration), a thermoelectric generator unit (second system), solid oxide electrolyser cell (third configuration), and fuel synthesis unit (fourth configuration) are proposed for cooling, heating, electricity, and hydrogen/synthetic methane production. In Configurations 1 to 3, 25% of the discharged CO2 is reinjected into the gasifier, whereas an additional portion is reused in Configuration 4 for synthetic methane production. Energy, exergy, exergoeconomic, and environmental (4E) analyses are conducted comprehensively. Besides, optimisation based on the genetic algorithm is applied to optimise the system through four different modes, for example, maximum efficiency, minimum product, cost, and cost‐rate. The results show that the second system has the highest exergy efficiency and power output while having the minimum product cost. Configurations 3 and 4 are capable of fuel production, while Configuration 4 concludes the least levelised CO2 emissions; however, having the highest total product cost. The proposed systems have some advantages and drawbacks, so selecting a suitable system depends on the perspective of decision‐makers.

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“…In one study, the highest system power generation efficiency using biomass gasifiers with internal combustion engine power generation was 28% [11]. Another study showed that gas from biomass is a promising energy source for fuel cells, which are not limited by the Carnot cycle efficiency, and that power generation by fuel cells is relatively clean, quiet, and reliable [12]. A hybrid system coupling with biomass gasification and high-temperature fuel cells thus offers a possibly profitable way to utilize biomass energy [13].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of a Solid Oxide Fuel Cell Based Combined Cooling, Heating, and Power System Integrated with Biomass Gasification

Cui

Wang

Lior

2021

Entropy

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A novel cooling, heating, and power system integrated with a solid oxide fuel cell and biomass gasification was proposed and analyzed. The thermodynamic models of components and evaluation indicators were established to present energetic and exergetic analysis. After the validations of thermodynamic models, the system performances under design work conditions were evaluated. The proposed system’s electrical, energy, and exergy efficiencies reached up to 52.6%, 68.0%, and 43.9%, respectively. The gasifier and fuel cell stack were the most significant components of exergy destruction in this system, accounting for 41.0% and 15.1%, respectively, which were primarily caused by the gasification and electrochemical reactions’ irreversibility. The influences of the key parameters of the ratio of steam to biomass mass flow rate (S/B), the biomass flow rate (Mbio), and the temperature and pressure of the fuel cell (Top and Psofc) on system energy performances were analyzed: doubling S/B (from 0.5 to 1.0) reduced the energy efficiency by 5.3%, while increasing the electrical efficiency by 4.6% (from 52.6% to 55.0%) and raising the biomass mass flow rate by 40% increased the energy and exergy efficiencies by 2.4% and 2.1%, respectively. When raising the SOFC operating temperature by 31.3%, the energy and exergy efficiencies rose by 61.2% (from 50.0% to 80.6%) and 45.1% (from 32.8% to 47.6%), respectively, but this likely would result in a higher operating cost. Increasing the SOFC pressure from 2 to 7 bar increased the electrical efficiency by 10.6%, but additional energy for pumping and compression was consumed.

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Thermodynamic performance study of the MR SOFC-HAT-CCHP system

Cited by 47 publications

References 37 publications

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Exergoeconomic and environmental optimisations of multigeneration biomass‐based solid oxide fuel cell systems with reduced CO ₂ emissions

Thermodynamic Analysis of a Solid Oxide Fuel Cell Based Combined Cooling, Heating, and Power System Integrated with Biomass Gasification

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Thermodynamic performance study of the MR SOFC-HAT-CCHP system

Cited by 47 publications

References 37 publications

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Exergoeconomic and environmental optimisations of multigeneration biomass‐based solid oxide fuel cell systems with reduced CO 2 emissions

Thermodynamic Analysis of a Solid Oxide Fuel Cell Based Combined Cooling, Heating, and Power System Integrated with Biomass Gasification

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Exergoeconomic and environmental optimisations of multigeneration biomass‐based solid oxide fuel cell systems with reduced CO ₂ emissions