Critical Examination of the Role of Silica Nanoparticle Dispersions in Heat Transfer Fluid for Solar Applications

Munuswamy, Dinesh Babu; Devarajan, Yuvarajan

doi:10.1007/s12633-022-02015-9

Cited by 12 publications

(25 citation statements)

References 40 publications

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“…F I G U R E 2 Experimental setups of 25 LPD solar FPC. 17,28,30 storage tank started to fall due to low solar insolation to establish the thermo-syphon. The total heat input for the given area is either calculated by ASHRAE or area under the curve.…”

Section: Determining Efficiencymentioning

confidence: 99%

“…The total heat input for the given area is either calculated by ASHRAE or area under the curve. 17,28,30 Since the insolation value varies from morning to evening, the total heat insolation received by the collector is calculated by the numerical method/analytical method.…”

Section: Determining Efficiencymentioning

confidence: 99%

“…Dispersants reduce surface tension, interfacial tension, and liquid-solid adhesion. 17,19,28,30 Dispersants improve two materials' wettability. CTAB (1%) is used as a surfactant.…”

Section: Determining Efficiencymentioning

confidence: 99%

“…Figure 8 F I G U R E 7 SEM image of CuO. 29,30 thermocouple at the bottom, the second at the middle, and the third at the top. From the curve (Figure 9a), the temperature is the same as in the second (T 2 ) and fourth (T 5 ) riser tubes, which are parallel to each other, is the same.…”

Section: Temperature Profile For Base Working Fluid Water For the Col...mentioning

confidence: 99%

“…28 From the temperature profiles, it was determined that at different locations of riser tubes, temperature and flow are spread consistently and uniformly with minimum heat losses across the collector, indicating an increase in overall collector efficiency. 15,29,30…”

Section: Temperature Profile For Base Working Fluid Water For the Col...mentioning

confidence: 99%

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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.

show abstract

Section: Determining Efficiencymentioning

confidence: 99%

Section: Determining Efficiencymentioning

confidence: 99%

“…Dispersants reduce surface tension, interfacial tension, and liquid-solid adhesion. 17,19,28,30 Dispersants improve two materials' wettability. CTAB (1%) is used as a surfactant.…”

Section: Determining Efficiencymentioning

confidence: 99%

Section: Temperature Profile For Base Working Fluid Water For the Col...mentioning

confidence: 99%

Section: Temperature Profile For Base Working Fluid Water For the Col...mentioning

confidence: 99%

See 3 more Smart Citations

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

View full text Add to dashboard Cite

show abstract

Thermal management using nano coated heat sink for electric vehicle battery cooling

Rajmohan

Ramesh

Arulprakasajothi

et al. 2023

Environmental Quality Mgmt

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Transient heat transfer occurs in a wide array of heat exchange devices and those subjected to heat input. Effective control of heat energy during transient heat transfer is vital to increase the operating life and effectiveness of the device and equipment subjected to the heating and cooling cycle. Extended surfaces in the form of pin fins are used to augment cooling in applications like electric vehicle batteries, computers, transformers, drones, and microcontrollers. In this study, an attempt is made to examine the heating and cooling cycle, the time required to attain a target temperature, and the enhancement ratio of finned heat exchangers. The heat sink is provided with graphene nanocoating intended for electric vehicle battery cooling. The performance of the heat sink and its counterparts having two different types of pin fins, that is, circular and square, are compared. Four different heat inputs were considered, that is, 15, 25, 35, and 45 W. Three different target temperatures, that is, 46, 56, and 66°C, were accounted for during the comparison. It is concluded that the graphene nanoparticles facilitated enhanced heat transfer during the heating cycle when the input heat was 25 W and above. The square pin fins exhibited an enhancement ratio of 1.5, irrespective of the input heat energy.

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Analysis of the thermal management of electronic equipment by employing silicon carbide nano-pcm-based heat sink

Balakrishnan,

Govindaraj,

Mahalingam

et al. 2023

Environ Sci Pollut Res

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Critical Examination of the Role of Silica Nanoparticle Dispersions in Heat Transfer Fluid for Solar Applications

Cited by 12 publications

References 40 publications

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

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

Thermal management using nano coated heat sink for electric vehicle battery cooling

Analysis of the thermal management of electronic equipment by employing silicon carbide nano-pcm-based heat sink

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