نتایج جستجو برای: flash boiling

تعداد نتایج: 25553  

2003
E. V. McAssey S. G. Kandlikar

The present study represents part of an effort in considering the replacement of ethylene-glycol/water mixtures with propyleneglycol/water mixtures for engine cooling in automotive application. Experimental results are presented for the heat transfer coeffic ient under flow boiling conditions for water and mixtures of water with ethylene-glycol and propylene-glycol. The range covered includes t...

, ,

Flash sintering as a new sintering method for sintering of ceramic materials has been studied and effect of various parameter such as flash current density, time of flash and contact paste on properties of flash sintered 8YSZ samples has been investigated. Results showed it is possible to achieve high density in shorter time and lower temperature than conventional sintering methods. Samples cou...

2011
Tailian Chen

Pool boiling heat transfer has been extensively studied over decades, but the effect of boundary heating conditions on boiling received little attention. In this work, heat transfer coefficients during pool boiling of five different refrigerants (R123, R245fa, R236fa, R134a, and R22) on the outside surface of a smooth copper tube were measured at the saturation temperature of 6.7 C; water flows...

Journal: :Transactions of the Japan Society of Mechanical Engineers 1971

2010

As the oven temperature is raised at a reproducible rate, analytes are eluted and the areas under the chromatogram are recorded. Boiling points are assigned to the time axis from a calibration curve, known as the boiling-point distribution curve, based on a known mixture of normal paraffin hydrocarbons over a fixed range. These paraffin hydrocarbons serve as markers, which identify the time tha...

Journal: :the iranian journal of pharmaceutical research 0
parvaneh mirabi department of midwifery, zanjan branch, islamic azad university, zanjan, iran. faraz mojab 1- department of pharmacognosy, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- pharmaceutical sciences research center, shahid beheshti university of medical sciences, tehran, iran.

hot flash is among the most common complaints of menopausal women, affecting their career, social activities and quality of life. this study aimed to investigate the effects of valerian on hot flashes in menopausal women. in this double blind clinical trial, 68 menopausal women with the chief complaint of hot flash were enrolled using sampling at hand and were randomly divided into drug and pla...

2011
Mieczyslaw Wojciechowski

The differences between the boiling points of dilute aqueous solutions of heavy water and the boiling point of ordinary water were measured in the range from 0.3 to 7 percent of D 20. The boiling points were found to increase linearly with increase in D 20, according to the equation mole % of D20 = 70.9 (tJ.T), where tJ.T is the boiling point in degrees centigrade minus 100. The measmements, ma...

Journal: :Journal of Electronic Packaging 2021

Abstract Much effort in the area of electronics thermal management has focused on developing cooling solutions that cater to steady-state operation. However, electronic devices are increasingly being used applications involving time-varying workloads. These include microprocessors (particularly those portable devices), power such as IGBTs, and high-power semiconductor laser diode arrays. Transi...

Journal: :Energies 2023

Gasoline–water mixed injections are of great interest because their advantages for reduced manufacturing costs and improved atomization, with the potential to alleviate engine detonation reduce emissions. In this work, based on principle impinging flow, a real-time gasoline–water mixture preparation system internal combustion engines was designed performance compared standard swirl mixing techn...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید