Evaluation of temperature and efficiency in relation to mass flow on a solar flat plate collector in Mexico

Diego‐Ayala, Ulises; Carrillo, J.G.

doi:10.1016/j.renene.2016.05.027

Cited by 30 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solar energy can be used in a variety of ways. Solar heat may be utilized for various applications, including space heating, household hot water, cooling, and even process heating 4,5 . Solar energy collection and conversion is a www.nature.com/scientificreports/ GNPs based nanofluid.…”

Section: Exergy Efficiency ηmentioning

confidence: 99%

Energy, exergy and economic (3E) analysis of flat-plate solar collector using novel environmental friendly nanofluid

Amar

Akram

Chaudhary

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The use of solar energy is one of the most prominent strategies for addressing the present energy management challenges. Solar energy is used in numerous residential sectors through flat plate solar collectors. The thermal efficiency of flat plate solar collectors is improved when conventional heat transfer fluids are replaced with nanofluids because they offer superior thermo-physical properties to conventional heat transfer fluids. Concentrated chemicals are utilized in nanofluids' conventional synthesis techniques, which produce hazardous toxic bi-products. The present research investigates the effects of novel green covalently functionalized gallic acid-treated multiwall carbon nanotubes-water nanofluid on the performance of flat plate solar collectors. GAMWCNTs are highly stable in the base fluid, according to stability analysis techniques, including ultraviolet–visible spectroscopy and zeta potential. Experimental evaluation shows that the thermo-physical properties of nanofluid are better than those of base fluid deionized water. The energy, exergy and economic analysis are performed using 0.025%, 0.065% and 0.1% weight concentrations of GAMWCNT-water at varying mass flow rates 0.010, 0.0144, 0.0188 kg/s. The introduction of GAMWCNT nanofluid enhanced the thermal performance of flat plate solar collectors in terms of energy and exergy efficiency. There is an enhancement in efficiency with the rise in heat flux, mass flow rate and weight concentration, but a decline is seen as inlet temperature increases. As per experimental findings, the highest improvement in energy efficiency is 30.88% for a 0.1% weight concentration of GAMWCNT nanofluid at 0.0188 kg/s compared to the base fluid. The collector's exergy efficiency increases with the rise in weight concentration while it decreases with an increase in flow rate. The highest exergy efficiency is achieved at 0.1% GAMWCNT concentration and 0.010 kg/s mass flow rate. GAMWCNT nanofluids have higher values for friction factor compared to the base fluid. There is a small increment in relative pumping power with increasing weight concentration of nanofluid. Performance index values of more than 1 are achieved for all GAMWCNT concentrations. When the solar thermal collector is operated at 0.0188 kg/s and 0.1% weight concentration of GAMWCNT nanofluid, the highest size reduction, 27.59%, is achieved as compared to a flat plate solar collector with water as a heat transfer fluid.

show abstract

Section: Exergy Efficiency ηmentioning

confidence: 99%

Energy, exergy and economic (3E) analysis of flat-plate solar collector using novel environmental friendly nanofluid

Amar

Akram

Chaudhary

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…At 10° angle, 47.64%, 50.0%, and 51.17% efficiencies were noted for three different cases. Using a submersible pump and forced flow conditions, Diego‐Ayala and Carrillo 16 assessed the temperature and efficiency of FPSC for three different thermo‐syphon conditions. They concluded that by controlling the maximum working temperature with a forced flow condition led to an increased efficiency.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of solar flat plate collector using energy storage phase change materials

Babu,

Shukla,

Gaba

et al. 2024

Energy Storage

View full text Add to dashboard Cite

The present study has been carried out to improve the overall efficiency of a conventional flat plate solar collector (FPSC) using two different heat storage phase change materials (PCMs). Two grades of paraffin wax—Paraffin‐P116 (PCM‐1) and Paraffin‐5838 (PCM‐2) as PCM are selected for the analysis based on their high heat fusion rate, low thermal conductivity, and suitable phase transition temperature. The present code has been validated with experimental results and it showed a maximum error of 6.43% in predicting the water outlet temperature. Absorber plate temperature, useful heat transfer rate, water outlet temperature and efficiencies are estimated to improve the performance of FPSC with and without PCM for various flow rates (15 lph and 30 lph) with two different weights of PCM (9 kg and 14 kg) for three different locations in India, [Chennai (13.0827° N, 80.2707° E), Bengaluru (12.9716° N, 77.5946° E), and Delhi (28.7041° N, 77.1025° E)]. The maximum increment in the efficiency of FPSC with the use of PCM‐1 is 19.59% and with the use of PCM‐2 is 16.53%. Using 14 kg of PCM‐1 with the conventional FPSC at water inlet flow rate of 15 lph increases the overall thermal efficiency up to 19.59% compared with conventional FPSC. The maximum increase in the percentage of efficiency with PCM‐1 from conventional FPSC for different cases of 15 lph‐09 kg is 16.34%, 15 lph‐14 kg is 19.59%, 30 lph‐09 kg is 14.57% and 30 lph‐14 kg is 18.45%. From the present study, it can be concluded that the overall efficiency of FPSC is increased with the use of 14 kg of PCM‐1 with conventional FPSC at the inlet water flow rate of 15 lph.

show abstract

“…Their research showed that this approach led to an increase in annual energy savings (up to 95.8% for zone 1; 91.3% for zone 2; 81% for zone 3; 74% for zone 4). An investigation of the impact of flow on both the working fluid temperature and the collector efficiency was carried out by Diego-Ayala et al [32]. They conducted thermal analysis of a solar flat plate water heater in a hot sub-humid region (Yucatan, Mexico).…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study

2020

View full text Add to dashboard Cite

In Poland, various solar collector systems are used; among them, the most popular are flat plate collectors (FPCs) and evacuated tube collectors (ETCs). The work presents two installations located at a distance of 80 km apart, working in similar external conditions. One of them contains 120 flat plate collectors and works for the preparation of hot water in a swimming pool building; the second one consists of 32 evacuated tube collectors with a heat pipe and supports the preparation of domestic hot water for a multi-family house. During the comparison of the two quite large solar installations, it was confirmed that the use of evacuated tube solar collectors shows a much better solar energy productivity than flat plate collectors for the absorber area. Higher heat solar gains (by 7.9%) were also observed in the case of the gross collector area. The advantages of evacuated tube collectors are observed mainly during colder periods, which allows for a steadier thermal energy production.

show abstract

Evaluation of temperature and efficiency in relation to mass flow on a solar flat plate collector in Mexico

Cited by 30 publications

References 24 publications

Energy, exergy and economic (3E) analysis of flat-plate solar collector using novel environmental friendly nanofluid

Energy, exergy and economic (3E) analysis of flat-plate solar collector using novel environmental friendly nanofluid

Thermal performance of solar flat plate collector using energy storage phase change materials

The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study

Contact Info

Product

Resources

About