Designing a solar powered Stirling heat engine based on multiple criteria: Maximized thermal efficiency and power

Ahmadi, Mohammad Hossein; Sayyaadi, Hoseyn; Dehghani, Saeed; Hosseinzade, Hadi

doi:10.1016/j.enconman.2013.06.025

Cited by 224 publications

(75 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An exergy analysis and the effect of some parameter to investigate their impacts on exergy losses also were performed. Furthermore, for high temperature heat source uses, Ahmadi et al [28] used NSGA II optimization method to optimize a solar-powered high temperature differential Stirling engines using multiple criteria by developing a thermal model. The same author also performed a finite time thermo economic multi objective optimization on a solar-dish Stirling engine using the same evolutionary algorithm [29] and maximized the thermal efficiency and entransy loss rate, while the entropy generation rate was minimized both using NSGA II algorithm [30].…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of a hydrogen and water production process by a solar-driven transcritical CO 2 power cycle with Stirling engine

Naseri

Bidi

Ahmadi

et al. 2017

Journal of Cleaner Production

113

View full text Add to dashboard Cite

 A novel cogeneration plant including Stirling engine to produce water and hydrogen. A dynamic RO model including recovery turbine for different permeate flow rate. About 8% reduction in exergy destruction in the system using ideal Stirling engine. More electrical power production, higher than both LNG and CO 2 power cycle. Electrolyzer-based ZLD approach by employing electrolyzer beside RO desalination. ACCEPTED MANUSCRIPT AbstractThis study attempts to go beyond the conventional framework of the integrated solar transcritical CO 2 power cycle works, aimed at further utilization of available exergy as much as possible. This paper proposed a novel system for hydrogen and fresh water production in which a Stirling engine used instead of a condenser, for the places with abundant access to solar radiation and sea, and least to freshwater sources. This proposal leads to further utilization of streams' exergy through the system instead of wasting to the environment, and further power production by the engine followed by the higher products. The electrolyzer employed beside Reverse Osmosis (RO) desalination system, and takes full advantages of highly concentrated brine stream of desalination, eliminating the wastewater rejection through proposed system leading to attaining a near-ZLD approach in fresh water and hydrogen production. This reduces the adverse impacts of desalination's wastewater on the environment. A thermodynamic and exergy analysis is carried out to compare the superiority of this study and investigate the effect of some key parameters on the overall performance of the system as well. The results showed that replacing the condenser by a Stirling engine reduces the exergy destruction through heat transfer from CO 2 to an LNG unit. Exergy destruction was reduced from 16.7% to 8.8% for the above configuration for an ideal Stirling engine that exploits it to produce extra power which its minimum is at least 9 kW and 15 kW higher than CO 2 and LNG power productions.Moreover, Entering RO brine stream, wasting 2.58 kW exergy, to the electrolyzer leads toNaClO and H 2 production besides removing brine stream. In a power plant, sodium hypochlorite is used for disinfection of cooling systems and hydrogen can be used as a source of energy in fuel cells. An examination of some thermodynamic factors showed that higher ACCEPTED MANUSCRIPT 2 CO 2 turbine inlet pressure has an optimum value in producing fresh water and hydrogen, while the higher CO 2 turbine inlet temperature slightly reduces the productions rate. The more recovery ratio also causes a sharp reduction in hydrogen production, whereas it has an optimum amount of fresh water production at recovery ratio equals to 0.47.

show abstract

Section: Introductionmentioning

confidence: 99%

Exergy analysis of a hydrogen and water production process by a solar-driven transcritical CO 2 power cycle with Stirling engine

Naseri

Bidi

Ahmadi

et al. 2017

Journal of Cleaner Production

113

View full text Add to dashboard Cite

show abstract

“…Nevertheless, two or more objective functions must be optimized at the same time. Few of the researchers [25][26][27][28][29][30][31] have investigated thermal energy conversion systems based on multi-objective evolutionary approach [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Multi-objective thermodynamic optimization of an irreversible regenerative Brayton cycle using evolutionary algorithm and decision making

Kumar

Kaushik

Kumar

et al. 2016

Ain Shams Engineering Journal

View full text Add to dashboard Cite

Brayton heat engine model is developed in MATLAB simulink environment and thermodynamic optimization based on finite time thermodynamic analysis along with multiple criteria is implemented. The proposed work investigates optimal values of various decision variables that simultaneously optimize power output, thermal efficiency and ecological function using evolutionary algorithm based on NSGA-II. Pareto optimal frontier between triple and dual objectives is obtained and best optimal value is selected using Fuzzy, TOPSIS, LINMAP and Shannon's entropy decision making methods. Triple objective evolutionary approach applied to the proposed model gives power output, thermal efficiency, ecological function as (53.89 kW, 0.1611, À142 kW) which are 29.78%, 25.86% and 21.13% lower in comparison with reversible system. Furthermore, the present study reflects the effect of various heat capacitance rates and component efficiencies on triple objectives in graphical custom. Finally, with the aim of error investigation, average and maximum errors of obtained results are computed. Ó 2015 Faculty of Engineering, Ain Shams University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

show abstract

“…This table (Table 1) indicates the main parameters used for the Stirling engine simulation. It should be noted that conduction/convection/radiation heat transfer and heat losses coefficients are estimated from the work that have been already done in this field [15,17,18,20]. Besides, the effectiveness of the regenerator r ε is supposed to increase the power efficiency of the engine.…”

Section: Thermal Energy Efficiency Of Dish Stirling Systemmentioning

confidence: 99%

“…Basing on cyclic period of the Stirling engine, thermal efficiency of the engine se η [17,18] is given as follows: 12 corresponding to the heat leakage from the heat source and the heat sink; M is a proportionality constant that is independent from the temperature difference but depends on the used material properties for the regenerative processes and given by: (16) where v c and R are, respectively, the molar specific heat of the working gas ( ) The above mentioned term 1 F in equation (15) is calculated by:…”

Section: Parabolic Collectormentioning

confidence: 99%

Dish Stirling System Potential Assessment for Eight Main Sites in Madagascar

Praene¹,

Radanielina²,

Rakotondramiarana³

2015

JPHMT

View full text Add to dashboard Cite

Solar energy is a green and attractive renewable energy source that can be converted for power generation. The objective of this work is to evaluate the potential of dish Stirling systems if they are used in the fourth worldwide largest island of Madagascar. For that purpose, a theoretical model of the dish Stirling system based on the geometrical configuration and heat transfer was developed and coded on Matlab. Simulations were run to investigate the energy efficiency variation of the system for eight main sites in Madagascar. As results, the proposed model enables to represent the system thermal behaviour to assess its efficiency. Among the eight studied sites, those which are on the coastal zones are more propitious to the dish Stirling system. While, in the north and northwest, the sites of Diego Suarez and Majunga present high efficiencies with, respectively, 31.65(%) and 31.07(%), it is in the south in fort-dauphin that thermal efficiency rate is maximal with 32.17(%). Convincing results that suggest that the implementation of this kind of facility will solve a large part of energy supply problems in these regions.Jean Philippe Praene et al.

show abstract

Designing a solar powered Stirling heat engine based on multiple criteria: Maximized thermal efficiency and power

Cited by 224 publications

References 33 publications

Exergy analysis of a hydrogen and water production process by a solar-driven transcritical CO 2 power cycle with Stirling engine

Exergy analysis of a hydrogen and water production process by a solar-driven transcritical CO 2 power cycle with Stirling engine

Multi-objective thermodynamic optimization of an irreversible regenerative Brayton cycle using evolutionary algorithm and decision making

Dish Stirling System Potential Assessment for Eight Main Sites in Madagascar

Contact Info

Product

Resources

About