Ali Saberi Mehr

• PhD
• Professor (Assistant) at University College Dublin

In the forthcoming era of smart energy systems, decentralised solutions are gaining increasing prominence due to their superior adaptability for interconnecting sectors, reduced inefficiencies, and environmentally friendly operation. This study introduces a new medium-scale biogas-based power plant that utilises a gas turbine to meet the energy nee...

Present research attempts to introduce a novel solution for dispatch-down renewable electrical power using an integration of compressed air energy storage with a pressurized flame-assisted solid oxide fuel cell. The proposed system can generate electrical power and green hydrogen using flame-assisted fuel cell and Vanadium-Chlorine thermochemical c...

Due to the commitments of many governments, electrical power production from renewables hopefully continues to become widespread at a rapid rate to revolutionize energy infrastructures. Nevertheless, this green power seems to be wasted due to seasonal power swings, grid restrictions, and curtailment. The present research investigates the practicabi...

No one can disagree the growing attention to developing and utilizing high temperature fuel cells partly due to their potential for multi-service applications. Recently, much focus can be observed on examination of the integration of solid oxide fuel cell (SOFC) or molten carbonate fuel cell (MCFC) systems with other subsystems to propose polygener...

In this article, a standard GAX absorption refrigeration cycle is investigated from the viewpoints of thermodynamics and thermos economics and its optimization is performed with the aim of obtaining maximum COP (or maximum exergy efficiency) or minimum unit product cost. The thermodynamic analysis of this system is done by applying the mass, energy...

One of Bitcoin's most significant problems is its seemingly insatiable use of electricity. In the present research, along with providing the required power for Bitcoin (BTC) mining, a solid oxide fuel cell (SOFC) system fed either by natural gas or biogas as a renewable source of energy is used to supply the electricity demand. Thermodynamic modeli...

Biogas is a proven and valuable energy source today for combined production of heat and electricity (CHP). In this paper, a novel CHP system installation based on a 500 kW micro humid air turbine (mHAT) in a wastewater treatment plant (WWTP) is presented and discussed. Furthermore, some considerations regarding an appropriate biogas treatment syste...

Fuel composition is proved to have a significant influence on the performance of solid oxide fuel cell (SOFC) systems. In the present research, the effect of hydrogen injection to biogas-fed SOFC power systems is investigated. Hydrogen production is performed through implementing a Photovoltaic-based solar system to electrolyze water by means of a...

Reactivity controlled compression ignition (RCCI) strategy uses two different fuels with different reactivities which provides more control over the combustion process and has the potential to dramatically lower combustion temperature and NOX and PM emissions. The objective of the present study is to numerically investigate the impact of syngas com...

Polygeneration configurations for small power generation systems offer significant potential for energy saving and reducing carbon emissions in wastewater treatment facilities. In this work, a biogas-fed solid oxide fuel cell system operating in a wastewater treatment plant (located in Turin, Italy) is analyzed in terms of its potential improvement...

How to cite this article In this study, palladium nano-particles were electrodeposited galvano-statically on carbon black powder (Vulcan XC-72R). The catalytic activity for electro-oxidation of ethanol and methanol in alkaline media were studied by cyclic voltammetry and linear sweep voltammetry techniques. The results indicated that the electro-ox...

Biogas is a proven and valuable energy source today for the combined production of heat and electricity (CHP). One of the most reliable and efficient technologies for the CHP application using biogas is represented by microturbine (MT). This prime mover not only shows a very flexible behavior towards change in the fuel composition, but it also stic...

Exergy and greenhouse gas emission analyses are performed on a novel trigeneration system driven by a solid oxide fuel cell (SOFC). The trigeneration system also consists of a generator-absorber heat exchanger (GAX) absorption refrigeration system and a heat exchanger to produce electrical energy, cooling and heating, respectively. Four operating c...

A syngas fed SOFC cogeneration system using a downdraft gasifier is modeled and optimized from the viewpoints of thermodynamics and thermoeconomics. A multi-objective optimization method based on genetic algorithm in the form of two different scenarios is carried out. In scenario I (exergoeconomic) the total exergy gained (TEG CHP) and total produc...

Wastewater Treatment Plants (WWTP) have a significant role in both processing wastewaters to return to the water cycle and in transforming between 40% and 60% of the dissolved organic matter into a non-fossil combustible gas (biogas) with a methane content of around 50–70 vol %. Significant energy cost savings can be achieved using combined cooling...

The integration of solid oxide fuel cell (SOFC) systems and micro gas turbines in a reference wastewater treatment plant is proposed. The main scope is to utilize the available biogas in a real wastewater treatment plant (WWTP) to feed both the SOFCs and micro gas turbines (MGTs) to produce electrical power while covering the digester thermal deman...

A unique cogeneration system integrating a biogas fed Solid Oxide Fuel Cell (SOFC) and a Concentrating Solar Thermal (CST) system for a reference Waste Water Treatment Plant (WWTP) in Italy is proposed. Biogas – which is locally in the WWTP from the anaerobic digestion (AD) of the collected sludge – can be used to produce electricity using SOFC pow...

Multi-objective optimization results using genetic algorithm are reported for a cogeneration system based on indirect integration of solid oxide fuel cell and gas turbine. In this case, solid oxide fuel cell and gas turbine operate with different working fluids and at different pressures and only heat is transferred between these two systems. A hea...

Two new cogeneration systems (producing power and heating) based on solid oxide fuel cell fed by either the syngas or biogas are proposed. The performance of systems is analyzed and compared with one another from the thermodynamic and economic viewpoints. Applying the conservation of mass and energy as well as the exergy and cost balance equations...

A solar still integrated with evacuated tubes and semitransparent photovoltaic are proposed. • Effect of basin water depth, number of ETC and types of PV modules are investigated. • Performance of proposed systems is compared with similar systems. • Using 30 tubes, the maximum distillated yield is obtained 2.76 kg for the depth of 0.07 m. • The max...

DEMOSOFC [1] is a Fuel Cell & Hydrogen Joint Undertaking (FCH-JU) funded project which foresees the installation of the largest biogas fed Solid Oxide Fuel Cell (SOFC) in Europe. The SOFC will be the sole combined heat & power (CHP) generator within a medium size wastewater treatment plant (WWTP) located in Torino (IT). Three SOFC modules, each rat...

Exergy and greenhouse gas emission analyses are performed for a novel trigeneration system driven by a solid oxide fuel cell (SOFC). The trigeneration system also consists of a generator-absorber heat exchanger (GAX) absorption refrigeration system and a heat exchanger to produce electrical energy, cooling and heating, respectively. Four operating...

Exergy and greenhouse gas emission analyses are performed for a novel trigeneration system driven by a solid oxide fuel cell (SOFC). The trigeneration system also consists of a generator-absorber heat exchanger (GAX) absorption refrigeration system and a heat exchanger to produce electrical energy, cooling and heating, respectively. Four operating...

A novel multi-generation system producing power, pure water, cooling and heating is proposed and analysed in detail. The system comprises a hybrid generator-absorber heat exchanger (GAX), the Organic Rankine Cycle (ORC), the absorption heat transformer (AHT) and a desalination system. For comparison purposes, three working fluids, including R123, I...

The main goal of this research is to compare thermoeconomic performance of a GAX absorption cycle and a hybrid GAX absorption cycle in which a compressor is employed to raise the absorber pressure. In order to do this, the ammonia-water standard GAX (SGAX) and hybrid GAX (HGAX) absorption refrigeration cycles are investigated and optimized from the...

The performance of an ejector refrigeration cycle is investigated both theoretically and experimentally. By applying the equations for the conservation of mass, energy, and momentum as well as that for the exergy balance, for each component in the cycle, a new two-dimensional thermodynamic model is developed. The influence of flow viscosity is take...

Cited By :1, Export Date: 4 January 2015

A novel hybrid generator-absorber heat exchange (GAX)-ejector absorption refrigeration (hybrid GAX-E) cycle, with ammonia-water as working fluid, is proposed and analysed in detail. Thermodynamic models are developed for the hybrid GAX-E, hybrid GAX, simple GAX and single effect ammonia-water absorption refrigeration cycles. A comparison among the...