Energy, exergy and environmental impact analysis of concentrated PV/cooling system in Turkey

Zuhur, Sadık; Ceylan, İlhan; Ergün, Alper

doi:10.1016/j.solener.2019.01.060

Cited by 31 publications

(13 citation statements)

References 13 publications

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“…By placing the values of y and x from equation (2) into equation (3), finally, the focal length of the parabola is obtained as follows [9][10][11][12][13][14][15][16][17][18][19][20]:…”

Section: Methodsmentioning

confidence: 99%

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Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems

Alayi

Mohkam

Monfared

et al. 2021

International Journal of Photoenergy

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In this paper, the physical parameters of the absorber pipe of a linear parabolic collector have been investigated. The types of solar collectors, specifically the linear parabolic collector, have been comprehensively studied. Then, the mathematical model of heat transfer in the absorber pipe of the collector has been presented based on valid references. Numerical solutions of the equations related to the absorber pipe were performed by MATLAB software, and the effects of the physical parameters of the absorber pipe on its efficiency were investigated. The results show that increasing the length of the absorber pipe causes a nonlinear decrease in the efficiency of the absorber pipe. One of the important results is the increase in fluid temperature due to the increase in the diameter of the adsorbent tube, which increases the diameter of the fluid temperature by 60 K, in which the parameter increases the efficiency by 0.38%.

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“…By placing the values of y and x from equation (2) into equation (3), finally, the focal length of the parabola is obtained as follows [9][10][11][12][13][14][15][16][17][18][19][20]:…”

Section: Methodsmentioning

confidence: 99%

“…For example, a power plant in California with a capacity of 30 MW uses 490 collectors. These collectors occupy a large part of the power plant space and their cost of repair and maintenance has a great impact on the economic aspects of the power plant [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems

Alayi

Mohkam

Monfared

et al. 2021

International Journal of Photoenergy

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“…For each specific hydropower plant involved in CES, the hydropower energy potential, net water head and streamflow were taken from primary data available in National Environmental Declaration System [40]. The photovoltaic panels only involved the physical exergy component, which is calculated according to the Equation (7) [41]:…”

Section: Materials Exergy Fluxesmentioning

confidence: 99%

Evaluation of the Water–Energy–Land Nexus (WELN) Using Exergy-Based Indicators: The Chilean Electricity System Case

2019

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The competition and interlinkages between energy, water, and land resources are increasing globally and are exacerbated by climate change and a rapid increase in the world population. The nexus concept has emerged for a comprehensive understanding related to the management and efficiency of resource use. This paper assesses water-energy-land nexus (WELN) efficiency through integration of the principles of Life Cycle Assessment (LCA) and exergy analysis, using the Chilean energy sector (CES) as a study case. The cumulative exergy consumption (CExC) and cumulative degree of perfection (CDP) are used as indicators for WELN efficiency. The results show the production of 1 MWh of electricity required 17.3 GJ ex , with the energy component of WELN (fossil and renewable energy sources) being the main contributor (99%). Furthermore, the renewable energy technologies depicted higher CDP of the water-energy-land nexus due to lower CExC and higher technology efficiency concerning non-renewables. The water and land resources contributed slightly to total exergy flow due to low quality in comparison with the energy component. Nevertheless, water availability and competition for land occupation constitute important issues for reducing environmental pressures and local conflicts. This study demonstrated the feasibility of exergy analysis for the evaluation of WELN efficiency through a single indicator, which could facilitate the comparison and integration with different processes and multi-scales.Energies 2020, 13, 42 2 of 20The nexus concept is an systematic approach for improvement of resource management, which can reach high degrees of complexity depending on scales and processes [9]. Consequently, different qualitative and quantitative methods for conceptualizing the relationship between natural resources have been proposed. Ringler et al.[10] developed a comprehensive qualitative framework for assessing the water, energy, land and food nexus (WELF), highlighting the relevance of land in the nexus. Nevertheless, the authors did not provide methods for the WELN-nexus evaluation. Siciliano et al. [11] have recently reported on the effect of large scale farm investment in the European Union on the water-energy-land-food (WELF) nexus, using indicators related to resource availability, scarcity and access. Although the authors describe several interlinkages between the resources, the quantitative evaluation of the nexus is not clearly highlighted. Karabulut et al. [12] studied the ecosystem-water-food-land-energy (WFLE) nexus by considering the ecosystem as the main issue within this nexus. The authors highlightsthe relationship between interventions and environmental impacts. In this case, the nexus evaluation is qualitative, and the matrix proposed can be adapted to different scales to investigate the trade-offs, synergies and antagonisms.Different approaches have been used to quantitatively evaluate the WELN. Silalertruska and Gheewala [13] carried out the evaluation of the WELN of sugarcane production in Thailand, using wat...

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“…It is stated that efficiency is not a correct indicator in terms of energy generation for concentrating systems and electrical gain or exergy are most significant parameters of these systems. Finally, examining the system in detail in terms of the environmental cost, it is revealed that it saves approximately 0.1 ₵ due to the decrease in the CO2 generation [10]. Zuhur and Ceylan have designed and constructed a concentrated photovoltaic/thermal (CPV/T) air collector to make contribution to studies dealing with the construction of green buildings.…”

Section: Introductionmentioning

confidence: 99%

Energy Analysis of Concentrated Photovoltaic/Thermal Panels with Nanofluids

Dumrul

Yılmaz

Kaya

et al. 2021

International Journal of Thermodynamics

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In this study, a prototype system was established for location heating application and electricity generation through utilizing two concentrated photovoltaic thermal panels (CPV/T) possessing flat surface receivers connected in series with each other. The purpose of the system is to supply the heating needs of a room in winter season and to meet the electricity requirement of the equipment used in this system. In the analysis of the installed system, different refrigerants (10% mono propylene glycol + 90% water and 0.5% Al2O3-water nanofluid) were tested at three different flow rates (0.4 m 3 /h, 0.5 m 3 /h, 0.6 m 3 /h). Throughout the experiments, the fan-coil air outlet temperature used to heat the room was adjusted to 35 °C with an inverter and a process control device. The results attained from the experiments carried out using different fluids throughout different months and days (April-May) have demonstrated that the thermal and electrical efficiencies of the system are found to be in good agreement with each other when evaluated in terms of the fluids utilized. The highest electrical energy recovery was found as 268 W at 0.6 m 3 /h flow rate for propylene glycol-water mixture and 194 W at 0.5 m 3 /h flow rate for nanomixture. The total thermal energy efficiency for the system using different fluids was found to be around 22%. The total thermal energy gain of the system was also calculated as 2312 W at 0.6 m 3 /h for the propylene glycol mixture and 2041 W at 0.5 m 3 /h for the nanomixture.

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Energy, exergy and environmental impact analysis of concentrated PV/cooling system in Turkey

Cited by 31 publications

References 13 publications

Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems

Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems

Evaluation of the Water–Energy–Land Nexus (WELN) Using Exergy-Based Indicators: The Chilean Electricity System Case

Energy Analysis of Concentrated Photovoltaic/Thermal Panels with Nanofluids

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