Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 27 - 56
Опубликована: Янв. 1, 2024
Язык: Английский
Thermal Science and Engineering Progress, Год журнала: 2023, Номер 42, С. 101860 - 101860
Опубликована: Апрель 25, 2023
Язык: Английский
Процитировано
74
Scientific Reports, Год журнала: 2023, Номер 13(1)
Опубликована: Фев. 27, 2023
Abstract In this study, we fabricated an economical, non-toxic, and convenient magnetic nanocomposite of CuFe 2 O 4 nanoparticles (NPs)/carbon quantum dots (CQDs) citric acid via the co-precipitation method. Afterward, obtained was used as a nanocatalyst to reduce ortho-nitroaniline (o-NA) para-nitroaniline (p-NA) using reducer agent sodium borohydride (NaBH ). To investigate functional groups, crystallite, structure, morphology, nanoparticle size prepared nanocomposite, FT-IR, XRD, TEM, BET, SEM were employed. The catalytic performance experimentally evaluated based on ultraviolet–visible absorbance assess reduction o-NA p-NA. acquired outcomes illustrated that heterogeneous catalyst significantly enhanced p-NA substrates. analysis absorption showed remarkable decrease for ortho-NA para-NA at λ max = 415 nm in 27 s 380 8 s, respectively. constant rate (k app ) stated 8.39 × 10 –2 −1 5.48 –1 . most highlighted result work @CQD from performed better than absolute NPs, since containing CQDs had more significant impact copper ferrite NPs.
Язык: Английский
Процитировано
66
Renewable and Sustainable Energy Reviews, Год журнала: 2024, Номер 193, С. 114288 - 114288
Опубликована: Янв. 16, 2024
Solar photovoltaic (PV) panels are often subjected to high temperature rise, causing their performance deteriorate. Graphene and graphene derivatives with superior in-plane thermal conductivity ranging up 3000–5000 W/(m·K) have recently presented new opportunities for improving heat dissipation rates in engineering applications. Cooling methods the incorporation of its different approaches such as graphene-coated neutral density (ND) filters, graphene-enhanced interface materials (TIM), phase change (PCM) nanoplatelets (GnP) nanofluids reviewed terms significances promoting solar PV panels. With a ND filter, focal spot was reduced by 20 % compared infrared 12 enhancement efficiency observed. Graphene-enhanced TIM rise 34 conventional TIM. The employment GnP-enhanced PCM improved power output system lower average cell achieved other nanoparticles-enhanced PCM. On hand, GnP nanofluid panel ∼17 °C, corresponding an increase ∼3 W output. surface at peak point 35.8 than when circulated system. These findings not only shed light on application assisting transfer cooling, but also provide valuable insights into applicability across diverse fields pipes, exchangers, collectors.
Язык: Английский
Процитировано
32
International Journal of Thermofluids, Год журнала: 2024, Номер 22, С. 100679 - 100679
Опубликована: Апрель 27, 2024
Язык: Английский
Процитировано
29
Journal of Energy Storage, Год журнала: 2024, Номер 86, С. 111227 - 111227
Опубликована: Март 14, 2024
Язык: Английский
Процитировано
23
Journal of Cleaner Production, Год журнала: 2022, Номер 384, С. 135579 - 135579
Опубликована: Дек. 12, 2022
Язык: Английский
Процитировано
70
The Canadian Journal of Chemical Engineering, Год журнала: 2023, Номер 101(10), С. 5802 - 5817
Опубликована: Янв. 6, 2023
Abstract At the city gate gas pressure reduction stations (CGSs), to prevent natural from forming a hydrate in throttle valve, is heated by heater before reaching relief valve. Heat exchangers are an essential component of industrial processes that contribute significantly total system energy. Since element impacting heat exchanger performance fouling process, all and models were dynamically simulated this study. Through coding C++ language simultaneous use fluent functions, or, other words, user‐defined function (UDF), fouling‐related defined for software. The dynamic simulation was performed, parameters such as strength layer thickness calculated. effects changing operating conditions, inlet velocity, surface temperature, species concentration on growth, also evaluated. As increased, rate increased. amount supersaturation increased temperature Due operational limitations system, reduce rate, velocity should be high possible, fluid low possible. In study, required time reach efficiency 70% calculated using modelling chamber, which equivalent 190 days. Additionally, critical at 3.5 cm.
Язык: Английский
Процитировано
40
International Journal of Energy Research, Год журнала: 2023, Номер 2023, С. 1 - 16
Опубликована: Март 2, 2023
The most common type of heat exchanger used in a variety industrial applications is the shell-and-tube (STHE). In this work, impact graphene nanoplate (GNP)/water nanofluids at 0.01 wt.%, 0.03 and 0.06 wt.% on thermal efficiency, performance factor, pressure drop, overall transfer, convective transfer coefficient (CVHTC), characteristics was examined. For these experiments, new STHE designed built. novelty study use GNPs/water for first time fully experimental investigation attributes nanofluids. GNP properties were analysed confirmed using analyses including XRD TEM. Zeta potential, DLS, camera images to examine stability various periods. zeta potential lower than -27.8 mV, confirming good GNP/water results illustrated that data distilled water had reasonably agreement with Sieder-Tate correlation. maximum enhancement CVHTC nanofluid GNP, equal 910 (W/m2K), an increase 22.47%. Also, efficiency improved by 8.88% compared base fluid. rate concentration volume flow 3915 (J/kg.K), improvement 15.65% over drops increased as increased. Although increasing drop tubes would CVHTC, it also power consumption pump. conclusion, performance.
Язык: Английский
Процитировано
34
Thermal Science and Engineering Progress, Год журнала: 2023, Номер 42, С. 101909 - 101909
Опубликована: Май 15, 2023
Язык: Английский
Процитировано
33
Process Safety and Environmental Protection, Год журнала: 2024, Номер 190, С. 1324 - 1354
Опубликована: Авг. 6, 2024
Язык: Английский
Процитировано
14