https://orcid.org/0000-0001-5979-8094
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ABSTRACT
In this study, hybrid renewable power systems (HRPS) based on biomass-fired (BF) and concentrating solar power (CSP) technologies are investigated. Parabolic trough collector (PTC), linear Fresnel reflector (LFR) and solar tower (ST) as CSP technologies are considered. This study aims to determine and compare exergoeconomic and exergoenvironmental factors, as well as and the relative cost and environmental impact differences of three proposed HRPS options for the district of Faro in the province of Garoua, Cameroon. Also, advanced exergy destruction expressions are used. We found the optimized exergoeconomic and exergoenvironmental factors for the subsystems of HRPS to be between 0.04–0.98 and 0.05–0.98, respectively. They have the highest values for the drying system (DS), and the lowest values for the solar-biomass field (SF+BF). The relative cost and environmental impact differences for the subsystems of HRPS are in the ranges of 0.07–0.79 and 0.28–0.96, respectively. They have the highest values for the DS, and the lowest values for the power block (PB). According to the levelized exergoeconomic/exergoenvironmental performances, PTC – BF presents the worst results before the optimization. ST – BF shows the best exergoeconomic and exergoenvironmental performance in the optimization process. The results of the sensitivity and optimization analyses reveal that it is essential to conduct eco-indicator and advanced exergy analyses to avoid high environmental impact points and specific exergy destructions.
Nomenclature
| Abbreviations and symbols | = | |
| AAM | = | Advanced analysis method |
| AEEA | = | Advanced exergoeconomic analysis |
| AEP | = | Annual energy production |
| = | Biomass | |
| = | Environment impact rate (mPts/h) | |
| BF | = | Biomass-fired |
| BFPS | = | Biomass-fired power system |
| BSFC | = | Brake-specific fuel consumption |
| = | Cost rate associated (USD/h) | |
| c | = | Cost per exergy unit (USD/kJ) |
| CCHP | = | Combined cooling heating and power |
| CERTAX | = | Carbon tax (USD) |
| CSP | = | Concentrating Solar Power |
| DS | = | Drying system |
| DSG | = | Direct steam generation |
| = | Exergy (kW) | |
| = | Exergy destruction (kW) | |
| = | Optimal exergy destruction after avoidable/endogenous part (kW) | |
| = | Optimal exergy destruction after avoidable part (kW) | |
| EAIT | = | Earning after interest and taxes (USD) |
| f | = | Exergoeconomic performance |
| f* | = | Exergoenvironmental performance |
| HE | = | Heat exchanger |
| HRPS | = | Hybrid renewable power system |
| HRSG | = | Heat recovery steam generator |
| ISG | = | Indirect steam generation |
| LCOE | = | Levelized cost of energy (USD/MWh) |
| LCOEr | = | Optimized levelized cost of energy (USD/MWh) |
| LFR | = | Linear Fresnel reflector |
| LFR-BF | = | Hybrid system based on LFR and BF |
| LVH | = | Low heating value (kJ/kg) |
| = | Mass flow rate (kg/s) | |
| MCFC | = | Molten Carbonate Fuel Cell |
| PB | = | Power block |
| PTC | = | Parabolic trough collector |
| PTC-BF | = | Hybrid system based on PTC and BF |
| RC | = | Refrigeration cycle |
| r* | = | relative environmental difference |
| r | = | relative cost difference |
| SF+BF | = | Solar-biomass field |
| SCA | = | Solar collector assembly |
| SOFC | = | Solid oxide fuel cell |
| SRC | = | Steam Rankine cycle |
| ST | = | Solar tower |
| ST-BF | = | Hybrid system based on ST and BF |
| T | = | Therminol |
| TIC | = | Total indirect cost (Million USD) |
| W | = | Water |
| = | Environmental impact rate (mPts/h) | |
| YOT | = | Yearly operation time (h) |
| = | Capital associated (USD/h) | |
| Subscripts and superscripts | = | |
| “,”’ | = | Optimized or optimal |
| * | = | Environmental parameters |
| AV | = | Avoidable |
| CI | = | Capital investment (USD) |
| D | = | Destruction |
| DI | = | Disposal |
| EX | = | Exogenous |
| EN | = | Endogenous |
| F | = | Fuel |
| k | = | component |
| L | = | Loss |
| OM | = | Operation and maintenance |
| S | = | Subsystem |
| T | = | Global or Total |
| Tot | = | Total |
| UN | = | Unavoidable |
Disclosure statement
No potential conflict of interest was reported by the author(s).
Supplementary Material
Supplemental data for this article can be accessed online at https://doi.org/10.1080/15567036.2023.2239747
Additional information
Notes on contributors
Alain Biboum
Alain Biboum earned his MSc from Polytechnic High School at Cheickh Anata Diop University, Senegal in 2014. After that, he received his PhD at Graduate School of Natural and Applied Sciences, Ege University, Turkey. Currently, he is working as a lecturer at National Advanced School of Engineering, University of Yaoundé I, Cameroun. He has several publications on thermoeconomic analysis and optimisation of thermal power systems based on renewable energy technologies.
Ahmet Yilanci
Ahmet Yilanci received his BS from Dokuz Eylul University, Izmir, Türkiye in 2000. In 2008, he did his PhD on a solar-hydrogen system installed in Denizli, Türkiye. He worked as a visiting researcher at University of Ontario Institute of Technology, Ontario, Canada between 2007-2008. He is currently working as an Associate Professor in Solar Energy Institute at Ege University, Izmir, Türkiye. He has contributed several research papers in national/international journals of repute and conference proceedings in renewable energy technologies.
Sosso Mayi Olivier Thierry
Sosso Mayi Olivier Thierry received his PhD on Energy Management and Systems Technology at Université du Quebec a Trois – Rivieres (UQTR), Canada in 2014. Currently, he is working as an Associate Professor at Advanced Teacher’s Training College for Technical Education of Douala, University of Douala, Cameroon. He has published several research papers in energy management, thermofluids, and power generation technologies.
Nasser Yimen
Nasser Yimen works at National Advanced School of Engineering (NASEY), University of Yaoundé I as an Assistant professor. In 2018, Nasser received his PhD at University of Yaoundé I, Cameroon. He mainly studies on optimisation and technoeconomic analysis of hybrid renewable energy systems.
Ruben Mouangue
Ruben Mouangue was trained at University of Yaoundé I (Cameroon) and University of Poitiers (France) in the Combustion and Detonation Laboratory, National School of Mechanics and Aerotechnics. Professor Ruben is a founding member and vice-coordinator of Cameroonian Combustion Group (CCG), and coordinator of Combustion and Green Technologies Laboratory. He has contributed to several research papers in international journals in the area of combustion and green technologies.