Thermal efficiency enhancement of direct absorption parabolic trough solar collector (DAPTSC) by using nanofluid and metal foam

Heyhat, Mohammad Mahdi; Valizade, M.; Abdolahzade, Sh.; Maerefat, Mehdi

doi:10.1016/j.energy.2019.116662

Cited by 98 publications

(31 citation statements)

References 33 publications

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“…The aperture was of 1600 mm length and 800 mm width, respectively. In addition, the parabolic structure of the collector was designed using the following equation (Heyhat et al, 2019)…”

Section: Fabrication Of Ptc and Thermo-physical Property Analysis Of Pcmmentioning

confidence: 99%

Optimization of thermal efficiency on solar parabolic collectors using phase change materials — experimental and numerical study

Dhanapal

Sathyamurthy

Kabeel

et al. 2021

Environ Sci Pollut Res

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Solar energy is a one-of-a-kind renewable energy source that has many uses, and in the thermal applications, it is receiving more attention and is becoming more feasible. The present work presents numerical and experimental studies to investigate the performance of a parabolic trough solar concentrator (PTC) integrated with a thermal energy storage system. A new receiver design is built that stores thermal energy using phase change material (PCM). A concentric absorber tube with two different kinds of PCM -MgCl 2 •6H 2 O and erythritol (filling the annular-space of absorber tube)were used to construct a PTC, and its thermal performance and thermal efficiency were investigated under two different HTF flow rates of 0.005 kg/s and 0.033 kg/s. Solar energy is transformed into heat, which is then used to store in the PCM before being discharged to cold water, which is the final heat transfer fluid in the receiver's inner pipe. The simultaneous studies of the PTC with and without PCM are investigated. A commercial Mat Lab's operating model through an imperialist competitive algorithm of the entire PTC system is presented, and the numerical results were compared to the experimental results, which were carried out with and without PCM in PTC. With the PCM in PTC (0.005 kg/s and 0.033kg/s), the HTF exhibited gain in peak temperatures of 11°C (erythritol) and 9°C (MgCl2• 6H2O) at 0.05 kg/s, whereas the peak temperatures further increase to 14°C (erythritol) and 12°C (MgCl2•6H2O) respectively at 0.033 kg/s, as compared to HTF without PCM. Average thermal efficiency of PTC with HTF flow rate of 0.033 kg/s was highest with usage of erythritol (40.6%), among all the cases. The experimental and predicted thermal efficiency performance indices for different flow rates and PCM are found to be with a deviation of around ± 1.9%, demonstrating the accuracy of the developed numerical model.

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“…The aperture was of 1600 mm length and 800 mm width, respectively. In addition, the parabolic structure of the collector was designed using the following equation (Heyhat et al, 2019)…”

Section: Fabrication Of Ptc and Thermo-physical Property Analysis Of Pcmmentioning

confidence: 99%

Optimization of thermal efficiency on solar parabolic collectors using phase change materials — experimental and numerical study

Dhanapal

Sathyamurthy

Kabeel

et al. 2021

Environ Sci Pollut Res

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“…Broadly, NFs have been showing essential enhancement in the overall thermal performance of many engineering systems. Focusing on solar applications, NFs positively improved the heat transfer of numerous systems other than FPSCs such as: Solar desalination systems [34], photovoltaic/thermal systems [35], solar heat exchangers [36], parabolic trough solar collectors [37], evacuated tube solar collectors [38], heat pipe in solar collectors [39], solar thermal energy storage systems [40], etc. The use of NFs in solar thermal systems results in many advantages, which can be summarized as follows:…”

Section: Applications Of Nfs In Solar Systemsmentioning

confidence: 99%

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

Al-Yasiri

Szabó

Arıcı

2020

Period. Polytech. Mech. Eng.

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Solar energy represents the best alternative for traditional energy sources used in many thermal energy systems. Among solar thermal systems, Flat Plate Solar Collectors (FPSCs) are the most utilized type implemented in low and medium-level thermal domestic applications. Recently, the usage of nanofluids (NFs) to enhance FPSCs is one of the newest technologies that has drawn the attention of researchers to improve the overall thermal efficiency of solar systems. This paper briefly reviews the recent studies carried on thermal performance enhancement of FPSCs by implementing NFs (single and hybrid NFs) considering the main influential parameters such as particle concentration, particle size, and collector area. Finally, the main obstacles reported by the researchers such as the instability, viscosity, concentration limit, corrosion effect and others are identified, which is believed to be useful for interested newcomers in this research area. Based on the studies investigated in this paper, NFs, even under low concentrations, can remarkably improve the energetic and exergetic efficiency of FPSCs.

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“…Additionally, Esmaeili et al 33 simulated a DASC using porous foam and nanofluid. Meanwhile, Heyhat et al 34 experimentally focused on the impacts of using copper foam and CuO-water nanofluid on thermal efficiency improvement in a direct absorption parabolic trough solar collector. Maximum temperature differences due to the utilization of the porous foam, the nanofluid, and their combination were 8.8, 10.7, and 16.6 C, respectively.…”

Section: Introductionmentioning

confidence: 99%

Porous foams and nanofluids for thermal performance improvement of a direct absorption solar collector: An experimental study

Hooshmand

Zahmatkesh

Karami

et al. 2021

Env Prog and Sustain Energy

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In this study, attention is focused to examine experimentally how utilization of porous foams, as well as nanofluids, may improve thermal performance of a residential-type direct absorption solar collector (DASC). The experiments are undertaken for SiC ceramic as the porous foam and SiC-water suspension as the nanofluid.Three levels are chosen for the reduced temperature difference, the porous foam, and the volumetric flowrate while four levels are selected for the nanoparticle concentration. To determine the relative importance of each of the involved parameters on thermal efficiency of the DASC, an ANOVA is undertaken. The best thermal performance is achieved in a case having both the metal foam and the nanoparticles.The maximum rises in thermal efficiency due to the insertion of the porous foam and the inclusion of the nanoparticles are recorded to be 14% and 37%, respectively. However, it is found that the volumetric flowrate is the dominant parameter in this system in a way that the inclusion of the porous foam or the nanoparticles deteriorates its role. Comparison of the results of the two porous foams demonstrates that the foam having higher porosity and pore density leads to higher thermal efficiency.

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Thermal efficiency enhancement of direct absorption parabolic trough solar collector (DAPTSC) by using nanofluid and metal foam

Cited by 98 publications

References 33 publications

Optimization of thermal efficiency on solar parabolic collectors using phase change materials — experimental and numerical study

Optimization of thermal efficiency on solar parabolic collectors using phase change materials — experimental and numerical study

Single and Hybrid Nanofluids to Enhance Performance of Flat Plate Solar Collectors: Application and Obstacles

Porous foams and nanofluids for thermal performance improvement of a direct absorption solar collector: An experimental study

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