Energy performance of an evacuated tube solar collector using single walled carbon nanotubes nanofluids

Sabiha, M.A.; Saidur, R.; Hassani, Samir; Said, Zafar; Mekhilef, Saad

doi:10.1016/j.enconman.2015.09.009

Cited by 190 publications

(45 citation statements)

References 34 publications

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“…Also, there is a decrease in temperature when the diameter is decreased and the volume fraction of the solid nanoparticles Cu, CuO, and Al 2 O 3 is increased. The study of Sabiha et al 14 showed that the collector efficiency improved while using nanofluids, compared with water. Abdin et al 15 reported that by using nanomaterials in solar collectors and PV systems, the efficiency can be increased.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of photovoltaic panels using two types of nanofluids

2020

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One of the main problems that limit the extensive use of photovoltaic (PV) systems is the increase in the temperature of PV panels. Overheating of a PV module decreases the performance of the output power by 0.4% to 0.5% per 1°C over its rated temperature that in most cases is 25°C. An effective way of improving electrical performance (power output and efficiency) and reducing the rate of thermal degradation of a PV module is to reduce the operating temperature of the PV surface by a cooling medium. To achieve this, nanofluids can be considered as a potentially effective solution for cooling. In this study, two types of nanofluids, namely Al2O3 and TiO2 water‐based mixture of different volume flow rates and concentrations (0.01%, 0.05%, and 0.1%) by weight, were used. Also, three PV panels were cooled simultaneously using nanofluids, water, and natural air, respectively. Results showed that nanofluids for cooling enhanced heat transfer rate much better than water and natural air. Best results were achieved for TiO2 nanofluids at the considered concentration (0.1 wt%). Nanofluid cooling of turbulent flows for such an application has not been investigated before. These results represent the first application of nanofluid cooling in the turbulent flow regimes and in outdoor conditions including real solar irradiation.

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Section: Introductionmentioning

confidence: 99%

Performance enhancement of photovoltaic panels using two types of nanofluids

2020

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“…Several researchers have investigated the use of nanofluids in flat plate solar collectors, evacuated tube solar collectors and other non-concentrating solar collectors [24][25][26][27][28][29][30][31][32][33].…”

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confidence: 99%

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

Mwesigye

Huan

Meyer

2016

Energy Conversion and Management

193

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This paper presents results of a numerical study on the thermal and thermodynamic performance of a high concentration ratio parabolic trough solar collector using Cu- Above a certain Reynolds number, further increase in the Reynolds numbers makes the entropy generation higher than that of a receiver with only the base fluid. Key wordsConcentration ratio, entropy generation, nanofluid, parabolic trough receiver, thermal efficiency. †

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“…Ghaderian and Sidik [19] improved the thermal properties by using an Al 2 O 3 nanofluid in an evacuated-tube solar collector, and the efficiency of the evacuated-tube solar collector using a 0.06 vol %-Al 2 O 3 nanofluid was 58.65% higher than that of water. Sabiha et al [20] measured the performance of an evacuated-tube solar collector, and a 93.4% improved efficiency was shown when a 0.2 vol %-single-walled carbon nanotube (SWCNT) nanofluid was used, which was 71.8% higher than that using water. Iranmanesh et al [21] investigated the thermal efficiency when a graphene nanofluid was used in an evacuated-tube solar collector.…”

Section: Introductionmentioning

confidence: 99%

Economic Analysis of Flat-Plate and U-Tube Solar Collectors Using an Al2O3 Nanofluid

2017

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Abstract:In this study, the efficiencies of flat-plate and U-tube solar collectors were investigated experimentally when an Al 2 O 3 nanofluid was used as a working fluid and compared to those of solar collectors using water. The energy savings and CO 2 and SO 2 generated were calculated and compared to those of solar collectors using water. In addition, based on the experimental results, an economic analysis of the use of solar collectors in various countries was performed. As the concentration of the Al 2 O 3 nanofluid increased, the performance of the solar collector improved. The highest efficiency for the solar collectors was shown at the concentration of 1.0 vol % with the nanoparticle size of 20 nm. The maximum efficiencies of the flat-plate and U-tube solar collectors using a 1.0 vol %-Al 2 O 3 nanofluid with 20-nm nanoparticles was 74.9% and 72.4%, respectively, when the heat loss parameter was zero. The efficiencies of the flat-plate and U-tube solar collectors using Al 2 O 3 nanofluid were 14.8% and 10.7% higher, respectively, than those using water. When 50 EA (each) flat-plate solar collectors were operated for one year using an Al 2 O 3 nanofluid, the coal use, generated CO 2 , and generated SO 2 were 189.99 kg, 556.69 kg, and 2.03 kg less than those of solar collectors using water, respectively. In addition, the largest electricity cost reduction was in Germany.

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Energy performance of an evacuated tube solar collector using single walled carbon nanotubes nanofluids

Cited by 190 publications

References 34 publications

Performance enhancement of photovoltaic panels using two types of nanofluids

Performance enhancement of photovoltaic panels using two types of nanofluids

Thermal performance and entropy generation analysis of a high concentration ratio parabolic trough solar collector with Cu-Therminol®VP-1 nanofluid

Economic Analysis of Flat-Plate and U-Tube Solar Collectors Using an Al2O3 Nanofluid

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