Performance assessment of hybrid power generation systems: Economic and environmental impacts

Al‐Sharafi, Abdullah; Yilbaş, Bekir Sami; Sahin, Ahmet Z.; Ayar, Tahir

doi:10.1016/j.enconman.2016.11.047

Cited by 49 publications

(13 citation statements)

References 30 publications

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“…El‐Emam and Dincer investigated a solar energy based novel integrated energy system . Al‐Sharafi et al conducted the environmental and economic analysis of a hybrid power generation system . Sahin et al investigated exergeo‐economic analysis of a combined cycle …”

Section: Introductionmentioning

confidence: 99%

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A novel renewable energy‐based integrated system with thermoelectric generators for a net‐zero energy house

2020

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Summary A renewable energy based integrated system is developed to meet the total energy demands of a house located off‐grid, and a thermodynamic analysis through energy and exergy methodologies is conducted for analysis, evaluation, and performance assessment. The present novel multigeneration system is mainly driven through the animal residues produced at the farm house. The proposed novel system is composed of nine main units namely, a biomass combustor, photovoltaic (PV) panels, parabolic solar trough collectors, thermoelectric generators, organic Rankine cycle, electrolyzer, homogeneous charged compression ignition (HCCI) engine, absorption chiller, and reverse osmosis (RO) unit. Biomass combustor runs an organic Rankine turbine for additional power during peak loads. The exhaust of gas turbine generates cooling to meet the cooling demand of the residential area of the farm house. PV panels are incorporated to generate hydrogen through electrolyzer. A HCCI engine generates power to compensate peak load as well as charging the farming vehicles of the farm house. The RO unit with energy recovery Pelton turbine produces fresh water for farming and residential use. The advanced integration of subsystems, thermoelectric generators and efficient utilization of waste, improves significant amount of energetic and exergetic efficiencies of overall multigenerational system. The energy and exergy efficiencies are enhanced in the order of 4.8% and 6.3%, respectively, after incorporating innovative cooling system to the PV modules. The overall energy and exergy efficiencies of the proposed multigeneration system with and without thermoelectric are found to be 67.6% and 57.1%, and 68.9% and 58.4%, respectively.

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Section: Introductionmentioning

confidence: 99%

“…19 Al-Sharafi et al conducted the environmental and economic analysis of a hybrid power generation system. 20 Sahin et al investigated exergeo-economic analysis of a combined cycle. 21 On-site electricity generation offsets the overall cost to run an electrolyzer but the requirement of plentiful land for solar panels is a major hurdle.…”

Section: Introductionmentioning

confidence: 99%

A novel renewable energy‐based integrated system with thermoelectric generators for a net‐zero energy house

2020

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“…As a consequence, that approach can positively contribute to achieve the NZEB qualification due to the CO 2 emissions reduction [15][16][17] over the consumption process. For that reason, the adoption of a hybrid energy system capable of combining fossil fuel with renewable energy sources [18][19][20] can be considered as a valuable solution for primary energy savings in existing buildings. It is noteworthy how hybrid systems based on CHP and heat pumps have recently been considered in the literature, as a potential option for balancing the renewable source intermittency, especially in all those locations where large district heating networks have been developed [21].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation Model of Trans-Critical Carbon Dioxide Heat Pump Application for Boosting Low Temperature Distribution Networks in Dwellings

et al. 2019

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This research investigates the role of new hybrid energy system applications for developing a new plant refurbishment strategy to deploy small scale smart energy systems. This work deals with a dynamic simulation of trans-critical carbon dioxide heat pump application for boosting low temperature distribution networks to share heat for dwellings. Heat pumps provide high temperature heat to use the traditional emission systems. The new plant layout consists of an air source heat pump, four trans-critical carbon dioxide heat pumps (CO2-HPs), photovoltaic arrays, and a combined heat and power (CHP) for both domestic hot water production and electricity to partially drive the heat pumps. Furthermore, electric storage devices adoption has been evaluated. That layout has been compared to the traditional one based on separated generation systems using several energy performance indicators. Additionally, a sensitivity analysis on the primary energy saving, primary fossil energy consumptions, renewable energy fraction and renewable heat, with changes in building power to heat ratios, has been carried out. Obtained results highlighted that using the hybrid system with storage device it is possible to get a saving of 50% approximately. Consequently, CO2-HPs and hybrid systems adoption could be a viable option to achieve Near Zero Energy Building (NZEB) qualification.

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“…For this reason, advanced cycles based on the additional components can play a significant role to achieve the target of more efficient power generation [1]. Although these modified layouts are limited by cost and geometric constraints [6], different advanced cycles have reached the commercial level in specific fields [7]. A typical example includes the recuperated microturbine cycles which have acceptable efficiency in small size units [8].…”

Section: Introductionmentioning

confidence: 99%

Surge prevention for gas turbines connected with large volume size: Experimental demonstration with a microturbine

et al. 2018

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The aim of this work is the demonstration of a surge prevention technique for advanced gas turbine cycles. There is significant surge risk in dynamic operation for turbines connected with large volume size additional components, such as a fuel cell stack, a saturator, a solar receiver or a heat exchanger for external combustion. In comparison with standard gas turbines, the volume size generates different behaviour during dynamic operations (with significant surge risk), especially considering that such additional components are including important dynamic constraints. In order to prevent the surge events, a vibration analysis was carried out to develop precursors which are able to highlight the approach of this unstable operative zone. Since the subsynchronous content of the measured vibrations is significantly increasing approaching the surge line, special attention was devoted to this parameter. The demonstration of a surge prevention system based on the sub-synchronous vibration content was carried out at the Innovative Energy Systems Laboratory of the University of Genoa. In this laboratory, a recuperated microturbine connected with a large size vessel was used. Starting from the stable operation, closing a valve in the main air line or increasing the compressor inlet temperature produced operative conditions with significant surge risk. The increase in sub-*Revised Manuscript with No Changes Marked Click here to download Revised Manuscript with No Changes Marked: Manuscript (Ferrari) CLEAN.doc Ferrari 2 synchronous vibration content detected by the control system was used to perform an active operation (bleed valve opening) to avoid the approaching surge event.

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Performance assessment of hybrid power generation systems: Economic and environmental impacts

Cited by 49 publications

References 30 publications

A novel renewable energy‐based integrated system with thermoelectric generators for a net‐zero energy house

A novel renewable energy‐based integrated system with thermoelectric generators for a net‐zero energy house

Dynamic Simulation Model of Trans-Critical Carbon Dioxide Heat Pump Application for Boosting Low Temperature Distribution Networks in Dwellings

Surge prevention for gas turbines connected with large volume size: Experimental demonstration with a microturbine

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