Analysis on the Influence of Nanoparticles of Alumina, Copper Oxide, and Zirconium Oxide on the Performance of a Flat-Plate Solar Water Heater

Devarajan, Yuvarajan; Munuswamy, Dinesh Babu

doi:10.1021/acs.energyfuels.6b02264

Cited by 73 publications

(28 citation statements)

References 17 publications

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“…Smoke emission increases with load for all tested fuels. As the load increases, additional quantity of fuel is supplied which in turn ends in a richer mixture and leads to higher smoke emissions (Yuvarajan et al 2016). Smoke emissions for MOBDT100, MOBDT200 and MOBDT300 are lower than that for MOBD at all the loads.…”

Section: Smoke Opacitymentioning

confidence: 96%

Influence of an oxygenated additive on emission of an engine fueled with neat biodiesel

Pandian

Munuswamy²,

Radhakrishana

et al. 2017

Pet. Sci.

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Biodiesel obtained from mustard seed is found to be a promising alternative for petroleum diesel fuel owing to its similarity in physical and chemical properties. In this work, TiO 2 nano-fluid which acts as an oxygen buffer during combustion was added to mustard oil biodiesel (MOBD) to study its effect on emission characteristics of MOBD. TiO 2 nano-fluid can provide high surface energy during the course of combustion and reduces the limitations of neat biodiesel. A four-stroke, multi-cylinder, water-cooled, diesel engine was used in the experiments and was fueled with diesel, neat MOBD and MOBD with TiO 2 nanoparticles at 100 ppm (MOBDT100), 200 ppm (MOBDT200) and 300 ppm (MOBDT300). Experimental results revealed that the TiO 2 nanoparticles had positive effect on the emission characteristics of MOBD as it acted as an oxidation buffer. MOBDT300 showed a reduction in HC, CO and smoke emissions as compared to pure MOBD. In addition, NO x emissions were also reduced by the catalytic activity of the TiO 2 nanoparticles which reduce the peak combustion temperature. Therefore, TiO 2 nano-fluid had a positive effect on reducing the emissions associated with neat biodiesel.

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Section: Smoke Opacitymentioning

confidence: 96%

Influence of an oxygenated additive on emission of an engine fueled with neat biodiesel

Pandian

Munuswamy²,

Radhakrishana

et al. 2017

Pet. Sci.

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“…In recent years, the PV systems had been integrated with techniques such as passive and active control system. 16 They also validated their results with the numerical modelling. Passive system is a technique, which doesn't use any external power for its operation.…”

Section: Introductionmentioning

confidence: 77%

“…used copper and aluminium oxides as the nano additives in three different fashions of 0.1, 0.2, and 0.4 wt%, respectively, and reported that the CuO produces higher thermal efficiency compared with Al 2 O 3. 16 They also validated their results with the numerical modelling. There is a large volume of data on the PV/T system published every year.…”

Section: Introductionmentioning

confidence: 77%

“…Hence, PV is replaced by PV/T (photovoltaic thermal system) to utilize the maximum heat energy emitted during the conversion process. Devarajan et al (2016). These systems are inducted to increase the thermal management of the PV/T system.…”

Section: Introductionmentioning

confidence: 99%

“…15 Including fins on the PV module increases the overall efficiency of the system. Devarajan et al (2016). used copper and aluminium oxides as the nano additives in three different fashions of 0.1, 0.2, and 0.4 wt%, respectively, and reported that the CuO produces higher thermal efficiency compared with Al 2 O 3.…”

Section: Introductionmentioning

confidence: 99%

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Progress of MWCNT, Al ₂ O ₃ , and CuO with water in enhancing the photovoltaic thermal system

et al. 2019

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Hybrid photovoltaic thermal system is an effective method to convert solar energy into electrical and thermal energy. However, its effectiveness is widely affected due to the high temperature of photovoltaic panel, and it can be minimized by employing nanofluids to the PV/T systems. In this research, the effect of various nanoparticles on the PV/T systems was studied experimentally. The nanofluids Al 2 O 3 , CuO, and multiwall carbon nanotube (MWCNT) were dispersed with water at different volume fractions of 0, 0.5, 1, 2.5, and 5 (vol%) using ultrasonication process. The effect of nanomaterials on viscosity and density was classified. All tests were carried out in an outdoor laboratory setup for calibrating the PV temperatures, thermal conductivity, electrical power, electrical efficiency, and overall efficiency. In addition, the energy analyses were also made to estimate the loss of heat owing to the nanofluids. Results show that use of the nanofluid increased the electric power and electrical efficiency of PV/T compared with water. Furthermore, MWCNT and CuO reduced the cell temperature by 19%. Consequently, the nanofluids MWCNT, Al 2 O 3 , and CuO produced the impressive values of 60%, 55%, and 52% increase in an average electrical efficiency than conventional PV. Particularly, the MWCNT produced superior results compared with other materials. It is evidently clear from the result that the introduction of the nanofluid increases the thermal efficiency without adding any extra energy to the system. Moreover, insertion of Al 2 O 3 , CuO, and MWCNT on PV/T system increases the exergy efficiency more than conventional PV module.How to cite this article: Sangeetha M, Manigandan S, Chaichan MT, Kumar V. Progress of MWCNT, Al 2 O 3 , and CuO with water in enhancing the photovoltaic thermal system. Int J Energy Res.

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Critical operating parameters of solar flat plate collectors using CuO nanoparticles of different volume fractions subjected to natural convection

Devarajan

Munuswamy²,

Ganesan

et al. 2023

Env Prog and Sustain Energy

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A flat plate solar water heater is investigated for its efficiency when water and the copper oxide (CuO) of 20 nm size nanoparticles of varying volume fractions and their performance are studied. A solar water heater with a flat plate collector of dimensions 1 × 0.45 m2 with 25 liter per day storage tank capacity, which works on the thermo‐syphon principle, is fabricated. The collector is run with a base working fluid of deionized water and then with CuO nanoparticles for different volume fractions of 0.2% and 0.4% with a surfactant to study the collector's efficiency. The surfactant used in cetyltrimethylammonium bromide of 1% in working fluid. The rise in temperature and the collector efficiency is compared for different volume fractions of CuO nanoparticles in the collector. The mixing of nanoparticles thus improves the efficiency of the collector. The experimental result shows that the collector with a 0.4% volume fraction of CuO with water as a working fluid has the maximum rise in temperature and efficiency compared with that of 0.2% and water. During the test, CuO without surfactant showed a slight decrement in heat transfer due to the agglomeration. The collector efficiency for 0.4% volume fraction achieves 63.28%, for 0.2% is 61.58%, and for water 54.15%. The overall efficiency was increased by up to 9.1% compared with base conventional fluid water for lower volume fractions of CuO nanoparticles for a smaller collector area.

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Analysis on the Influence of Nanoparticles of Alumina, Copper Oxide, and Zirconium Oxide on the Performance of a Flat-Plate Solar Water Heater

Cited by 73 publications

References 17 publications

Influence of an oxygenated additive on emission of an engine fueled with neat biodiesel

Influence of an oxygenated additive on emission of an engine fueled with neat biodiesel

Progress of MWCNT, Al ₂ O ₃ , and CuO with water in enhancing the photovoltaic thermal system

Critical operating parameters of solar flat plate collectors using CuO nanoparticles of different volume fractions subjected to natural convection

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