Performance Evaluation of a Direct Absorption Collector for Solar Thermal Energy Conversion

Sattar, Abdul; Farooq, Muhammad; Amjad, Muhammad; Saeed, Muhammad; Nawaz, Saira; Anwar, Saqib; El-Sherbeeny, Ahmed M.; Soudagar, Manzoore Elahi M.; Filho, Ênio Pedone Bandarra; Ali, Qasim; Imran, Muhammad; Pettinau, Alberto

doi:10.3390/en13184956

Cited by 28 publications

(19 citation statements)

References 45 publications

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“…Similar values of evaporation efficiency are obtained in this study for iron oxide Fe 3 O 4 nanoparticles at a significantly higher mass fraction of particles of 3% wt. Here, we should note that Sattar et al in their study [9] used the term "photothermal efficiency," which is slightly different from that used in the present study. Namely, the photothermal efficiency accounts for the energy spent on heating the nanofluid in addition to the evaporation energy.…”

Section: Evaporation Efficiencymentioning

confidence: 70%

“…It is interesting to note that in the recent study by Sattar et al [9], several types of water-based nanofluids with graphene oxide, zinc oxide, copper oxide, and their hybrids were tested under the natural solar heat flux for application in a direct absorption collector. The authors found that the evaporation efficiency for all cases varied within a range of 0.2 to 0.5.…”

Section: Evaporation Efficiencymentioning

confidence: 99%

“…The efficiency of thermal methods of desalination based on solar energy can be increased via the dispersion of nanoparticles in seawater [9][10][11][12], i.e., production of a nanofluid. The nanoparticles make it possible to implement the process of absorbing solar energy directly in the volume of the fluid and significantly reduce energy losses in the environment [13].…”

Section: Introductionmentioning

confidence: 99%

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Solar-Driven Desalination Using Nanoparticles

et al. 2021

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Due to the high light absorption and the possibility of localizing boiling to the interior of the receiver, nanoparticles are promising for solar-driven desalination. The paper presents an experimental study of the nanoparticle-based photothermal boiling of water with sea salt. The experiments were carried out using a laboratory-scale system with a transparent photothermal receiver of light and a closed condensate cycle. In this study, we tested three types of nanoparticles: multiwall carbon nanotubes with two main sizes of 49 nm and 72 nm, 110 nm iron oxide particles Fe3O4, and a commercial paste based on carbon nanotubes. The concentration of nanoparticles was varied up to 10% wt. We found that the nanoparticles enhance the steam generation by 23%, relative to a conventional desalinator with a black-body receiver. The best result was obtained for the 5% wt. concentration of carbon nanotubes.

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Section: Evaporation Efficiencymentioning

confidence: 70%

Section: Evaporation Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solar-Driven Desalination Using Nanoparticles

et al. 2021

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“…The numerical results obtained from TRNSYS were compared with experimental results. The numerical results were linked with the experimental results observed by Sattar et al (Sattar et al, 2020) and the variation in collector temperature (T col ) with simulation hours for the whole year has been shown in Figure 6.…”

Section: Variation In Collector Temperaturementioning

confidence: 73%

Performance Investigation of a Solar Thermal Collector Based on Nanostructured Energy Materials

et al. 2021

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The convective and conductive heat transfer between the solar collector and working fluids make photothermal performance limited, and result in a higher rate of heat loss from the surface of the conventional absorber to the surroundings. Direct absorption solar collectors (DASC) are a favorable alternative for their improved photothermal performance. In this study, a simulation based on the performance of a nanostructured solar collector has been carried out using TRNSYS. The connective and conductive heat transfer from direct solar collectors were improved by using nanofluids and three different nanostructured materials, CuO, GO, and ZnO, in this study. The analysis determines the outlet temperature of the working fluids that passed through the direct solar collector. The TRNSYS model consists of a direct solar collector and weather model for Lahore city, the simulations were performed for the whole year for 1,440 h. The stability of these nanostructured materials in the water was investigated by using a UV‐Vis spectrophotometer. Various performance parameters of direct solar collectors were determined, such as variation in outlet collector temperature and heat transfer rates. The numerical model is validated with experimental results. A maximum outlet temperature of 63°C was observed for GO-based nanofluids. The simulation results show that for the whole year, nanofluids improved the performance of direct solar collectors. Significant improvements in the heat transfer rate of 23.52, 21.11, and 15.09% were observed for the nanofluids based on nanostructures of CuO, ZnO, and GO respectively, as compared to water. These nanostructured energy materials are beneficial in solar-driven applications like solar desalination, solar water, and space heating.

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“…Turbulence flow of gaseous fluid and its characteristic with solid particles in the enclosed chamber were introduced [41]. The detailed analysis of nano particles and their energy distributive with respect to solar thermal power was defined [42]. Development of solid-based absorbent and effective carbon capture applications with respect to a sustainable environment was discussed [43].…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis and Energy Efficiency Improvements in Tunnel Kiln for Sustainable Environment

et al. 2021

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Kiln is a prime need in the ceramics industry, where energy loss is a major part which consumes about 60% production cost through thermal energy for different applications. Higher density of fired and tunnel kiln refractory material lowers the thermal diffusivity and the proper selection of fired material minimizes the energy loss along the kiln. In particular, this research analysed the results of a heat recovery system comprised of a metallic recuperator which gives around 8% energy savings in natural gas consumption. In this work, detailed power quality analysis of low-power factor motors of a tunnel kiln was carried out and a power factor improvement solution was suggested to save electrical energy with payback period of 0.8 y. The motor operating at a low-power factor consumes more reactive power which does not produce beneficial work. A low-power factor around 0.4 causes network power loss, increases in transformer loss and voltage drops. The solution with accumulative capacitance power of 148.05 uF was installed to achieve the power factor to 0.9. Flu gas analyzer was installed to monitor the range of O2 in pre-heating, oxidation, and firing zones of the kiln which should be ≥8% and 3%, respectively. Regression analysis for thermal energy consumption of a tunnel kiln is done to find the forecast thermal energy consumption. This analysis can be used to find operational efficiency, supporting decisions regarding dependent variable of thermal energy consumption and independent variable of production. This research is very helpful for the ceramics industry to mitigate the energy loss at SMEs as well as in mass production level.

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Performance Evaluation of a Direct Absorption Collector for Solar Thermal Energy Conversion

Cited by 28 publications

References 45 publications

Solar-Driven Desalination Using Nanoparticles

Solar-Driven Desalination Using Nanoparticles

Performance Investigation of a Solar Thermal Collector Based on Nanostructured Energy Materials

Thermal Analysis and Energy Efficiency Improvements in Tunnel Kiln for Sustainable Environment

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