scholarly journals Experimental analysis of CI engine using titanium oxide and aluminum oxide alloy coated piston fuelled with biofuel made up of agricultural waste

2020 ◽  
Vol 8 ◽  
pp. 100140
Author(s):  
Akshay Maruti Narad ◽  
Mahesh P. Joshi
2021 ◽  
Vol 42 ◽  
pp. 1387-1392
Author(s):  
V. Dananjayakumar ◽  
Mallesh B. Sanjeevannavar ◽  
Shailesh M. Golabhanvi ◽  
M.A. Kamoji

Author(s):  
Jorge Silva-Yumi ◽  
Telmo Moreno Romero ◽  
Gabriela Chango Lescano

Nanofluids constitute an alternative for the most efficient use of energy as they allow generating or improving thermal properties among others of traditional fluids, they are defined as so-called base fluids, such as: water, ethylene glycol, oils, etc., which contain nanoparticles in suspension , such as: aluminum oxide, silicon oxide, titanium oxide, metal nanoparticles, carbon nanotubes, graphene, carbides, etc. Nanofluids can be synthesized by two methods, the nanoparticles can be obtained separately and then the nanofluid is prepared or both nanoparticles and the nanofluid can be prepared simultaneously, an important factor to consider in obtaining nanofluids is their stability. Stability can be achieved by physical treatment or chemical treatment using surfactants. There are many studies about nanofluids, however, most are obtained with synthetic nanoparticles, leaving the use of natural nanoparticles as a field to be explored, as well as other surfactants to improve their stability. Keywords: nanofluids, hybrid nanofluids, nanoparticles, nano refrigerant. Resumen Los nanofluidos constituyen una alternativa para el uso más eficiente de energía pues permiten generar o mejorar las propiedades térmicas entre otras de los fluidos tradicionales, son definidos como fluidos denominados base, como: agua, etilenglicol, aceites, etc., que contienen nanopartículas en suspensión, como: óxido de aluminio, óxido de silicio, óxido de titanio, nanopartículas metálicas, nanotubos de carbono, grafeno, carburos, etc. Los nanofluidos se pueden sintetizar por dos métodos, se pueden obtener las nanopartículas por separado y luego preparar el nanofluido o se puede preparar simultáneamente las nanopartículas y el nanofluido, un factor importante a considerar en la obtención de nanofluidos es su estabilidad. La estabilidad se puede lograr mediante tratamiento físico o tratamiento químico mediante la utilización de surfactantes. Existen muchos estudios acerca de nanofluidos sin embargo, la mayoría se obtienen con nanopartículas sintéticas, quedando el uso de nanopartículas naturales como un campo por explorar al igual que otros surfactantes para mejorar su estabilidad. Palabras Clave: nanofluidos, nonofluidos híbridos, nanoparticulas, nanorefrigerantes.


2021 ◽  
Author(s):  
Shima El-Shemy ◽  
Mostafa Eissa ◽  
Aly Arafa

Abstract It is interesting to note in recent years for a large number of researchers the topic of photonic crystals (PhCs) because of their new and useful properties. In addition, there are many advantages to photonic crystals materials as a high reflectance materials as well as the high transmittance materials based on the target application. The calculations were done for Aluminum oxide and titanium oxide (Al2O3/TiO2) composite photonic crystal in one dimension, which shows a high reflectivity (~ 99 %). The chosen photonic crystal composite can be useful to reflect the Cherenkov light many times which comes out from Cherenkov radiation by using radioisotope 90Sr-90Y. The output intensified light has power 1.45 µwatt and 1.45 nwatt for 90Sr-90Y with the activity 1Ci and 1mCi respectively, that can be used for micro/nano-power source applications.


2021 ◽  
Vol 2088 (1) ◽  
pp. 012022
Author(s):  
N S Ivanov ◽  
Yu A Kuzma-Kichta ◽  
A V Lavrikov

Abstract In this work, coatings of nanoparticles of aluminum oxide are investigated. Photos were obtained using an electron and optical microscope. A method is proposed for the formation of a coating of nanoparticles with and without agglomerates. The transport properties of nanoparticles of aluminum oxide, silicon carbide, titanium oxide and diamond have been investigated. The effect of agglomerates of nanoparticles on the rise of liquid has been determined.


Energy ◽  
2019 ◽  
Vol 173 ◽  
pp. 290-305 ◽  
Author(s):  
B. Ashok ◽  
A.K. Jeevanantham ◽  
K. Nanthagopal ◽  
B. Saravanan ◽  
M. Senthil Kumar ◽  
...  

2021 ◽  
Vol 66 (12) ◽  
pp. 1802-1810
Author(s):  
V. G. Kostishin ◽  
A. Yu. Mironovich ◽  
A. V. Timofeev ◽  
R. I. Shakirzyanov ◽  
I. M. Isaev ◽  
...  

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