نتایج جستجو برای: boiling

تعداد نتایج: 8490  

2011
Dwight Cooke Satish G. Kandlikar

Pool boiling is of interest in high heat flux applications because of its potential for removing large amount of heat resulting from the latent heat of evaporation and little pressure drop penalty for circulating coolant through the system. However, the heat transfer performance of pool boiling systems is not adequate to match the cooling ability provided by enhanced microchannels operating und...

Journal: :Molecular nutrition & food research 2011
Fany Blanc Yvonne M Vissers Karine Adel-Patient Neil M Rigby Alan R Mackie A Patrick Gunning Nikolaus K Wellner Per S Skov Laetitia Przybylski-Nicaise Barbara Ballmer-Weber Laurian Zuidmeer-Jongejan Zsolt Szépfalusi Janneke Ruinemans-Koerts Ad P H Jansen Hervé Bernard Jean-Michel Wal Huub F J Savelkoul Harry J Wichers E N Clare Mills

SCOPE Roasting rather than boiling and Maillard modifications may modulate peanut allergenicity. We investigated how these factors affect the allergenic properties of a major peanut allergen, Ara h 1. METHODS AND RESULTS Ara h 1 was purified from either raw (N-Ara h 1) or roasted (R-Ara h 1) peanuts. Boiling (100°C 15 min; H-Ara h 1) resulted in a partial loss of Ara h 1 secondary structure a...

2011
Craig Gerardi Jacopo Buongiorno Lin-wen Hu Thomas McKrell

Infrared thermometry was used to obtain first-of-a-kind, time- and space-resolved data for pool boiling phenomena in water-based nanofluids with diamond and silica nanoparticles at low concentration (<0.1 vol.%). In addition to macroscopic parameters like the average heat transfer coefficient and critical heat flux [CHF] value, more fundamental parameters such as the bubble departure diameter a...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
hikmet s. aybar mohsen sharifpur

simulation of turbulence boiling, generation of vapour and predication of its behaviour are still subject to debate in the two-phase flow area and they receive a high level of worldwide attention. in this study, a new arrangement of the three dimensional governing equations for turbulence two-phase flow with heat and mass transfer are derived by using ensemble averaging two-fluid model and util...

2013
Jiajun Xu

In this study, one type of nano-engineered heat transfer fluids: Water/AOT/Polyalphaolefin (PAO) nanoemulsion fluids are prepared, and their phase change heat transfer properties have been investigated. The Water/AOT/Polyalphaolefin nanoemulsion heat transfer fluids which are thermodynamically stable are spontaneously generated by a self-assembly of dispersed water nanodroplets The results, exp...

2011
Y. Shi A. Hassanein

During plasma instabilities in tokamak devices, metallic plasma facing components (PFC) can undergo surface melting and vaporization. Macroscopic losses of melt layers developed during these instabilities are of a serious concern to the lifetime of PFC, the damage of nearby components, and potential core plasma contamination. Due to the presence of impurities and dissolved gas, boiling occurs i...

2003
William P. Eckel Tobias Kind

Gas chromatographic (GC) retention indices are useful for reviewing mass spectral library searches for the tentative identification of organic compounds. If the known GC retention index (RI) of a compound that ranks high on the (gas chromatography-mass spectrometry) GC-MS library search “hit list” matches the RI of the unknown, there is a strong presumption that a correct identification has bee...

2003
Russell L. Detwiler Jeffery J. Roberts William Ralph Brian P. Bonner

Phase change of pore fluid (boiling/condensing) in rock cores under conditions representative of geothermal reservoirs results in alterations of the electrical resistivity of the samples. In fractured samples, phase change can result in resistivity changes that are more than an order of magnitude greater than those measured in intact samples. These results suggest that electrical resistivity mo...

2007
S. G. Kandlikar

A simple correlation was developed earlier by Kandlikar (1983) for predicting saturated flow boiling heat transfer coefficients inside horizontal and vertical tubes. It was based on a model utilizing the contributions due to nucleate boiling and convective mechanisms. It incorporated a fluid-dependent parameter Ffl in the nucleate boiling term. The predictive ability of the correlation for diff...

2016
Akihiro Matsuyama Hironori Mizutani Takumi Kozuka Hiroshi Inoue

Charge-discharge properties of the surface-modified ZrNi negative electrodes with different degrees of boiling alkaline treatment were investigated. The boiling alkaline treatment was performed by immersing the ZrNi electrode in a boiling 6 M KOH aqueous solution for 2 h or 4 h. The initial discharge capacity for the untreated ZrNi negative electrode was 21 mAh·g−1, but it was increased to 114 ...

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