Mass transfer coefficient

Introduction Ultrasound is acoustic energy with a frequency at about 20kHz which is above the capability of human hearing. It is more commonly used in the medical field than food industry. In the medical field, the most significant usage of ultrasound is in sonographic scanners. As these scanners work at 2-18MHz, it produces smaller wavelength which is able to make sonogram of smaller details. As such, ultrasound sound based imaging technique is used to visualize body structures and tissues (Carovac

support the escalation of performance, efficiency and reliability in a widespread range of applications that rely on boiling heat transfer: from microelectronics, to combustion engine cooling, and further to highly specialized design and licensing of nuclear reactor fuel. Due to the markedly complex physics involved, the application of M-CFD to boiling heat transfer is rather young; yet widespread agreement exists on two points, one being the great potential of the approach and the other being the

absorb the light depending on how concentrated it is and this produces an electronic reading from the photometer which is the absorbance value. The maximum absorption was found for both solutions and was used to calculate the molar extinction coefficient of methylene blue. An unknown concentration of methylene blue was calculated by using

At a time when it was popular practice for kids growing up in my country to aspire to become doctors, lawyers and engineers, for no rational reasons owing to naiveté that comes with such tender ages, I had known I wanted to save lives. I just didn’t know in what capacity it would be. I can safely say that I grew up faster than most children my age, I had known what it meant to lose a father at six, I had seen an aunt die of what they said was cancer at ten. I had also known the frustration of not

Heat Transfer and Pressure Drop Study on a Counter-Current Double Pipe Heat Exchanger using CNT/water Nano-fluid M.M. Sarafraz1*, a, F. Hormozi1, b 1Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran [*corresponding author] a E-mail: mohamadmohsensarafraz@gmail.com Tel: +989120976870 b E-mail: fhormozi@semnan.ac.ir Tel: +989123930495 Abstract: This work aims to investigate the heat transfer and pressure drop characteristics of carbon nanotube water-based nano-fluids

cooling capacity is higher. This trend can be attributed to the fact that at higher flow conditions, the convective heat transfer flux is higher resulting in a higher heat transfer rate. The mass transfer is higher as the humid air is removed from the column at a much faster rate owing to the high flow rates; this helps in stripping of water from the liquid phase. Higher mass transfer would result in more energy being gained by air in the form on latent heat. The curve for lowest water flow rate (28

SIMULATION OF DOUBLE SLOPE SOLAR STILL AT DIFFFERENT INCLINATIONS USING CFD Abstract Solar distillation system proves to be a good and cost effective method for water purification. The function of solar still is to produce fresh water based on evaporation process, utilizing the solar radiation as the source of energy. Solar still is a device which uses process of solar distillation. A 3 dimensional solar still is modelled at 3 different glass cover inclinations and is brought into Ansys cfd where

determine the closure of the energy balances around various heat exchangers, including shell-and-tube and two different double pipe exchangers, in a steady-state system. Additionally, the overall heat transfer coefficient for the shell-and-tube heat exchanger is to be calculated, and the heat transfer areas for the double pipe heat exchangers are to be calculated to determine if one or both possess fins. Energy balances will be used evaluate three heat exchangers at steady-state conditions in this

EFFECT OF GAS TURBINE BLADE TIP INJECTION ON THE FLOW CHARACTERISTICS AND THE DISTRIBUTION OF HEAT TRANSFER COEFFICIENT OVER BLADE SURFACES Ahmed A. Abdelsamee 1, Bassily Hanna 2, El-Batsh H.3, Mohammed R. Diab 4 1 Assistant Lecturer, Mechanical Engineering and energy Dep., Faculty of Engineering, South Valley University, Qena, Egypt 2Professor, Mechanical power engineering and energy Dep., Faculty of Engineering, Minia University, Minia, Egypt 3 Professor, Mechanical power Engineering and energy

Thermal radiation effect on heat and mass transfer across steady MHD flow of power-law nanofluid over a rotating disk N.T. EL-Dabe1, H.A. Attia2, M.A.I. Essawy3,* , A.A. Ramadan4, A. H. Abdel-Hamid4 1Department of Mathematics, Faculty of Education, Ain Shams University, Roxy, Heliopolis, Cairo, Egypt 2Department of Engineering Mathematics and Physics, Faculty of Engineering, Fayoum University, 63415, Egypt 3Higher Technological Institute (HTI), 3rd zone, 7th section – P.O Box NO. 4 - 6th of October