For quench of mm-size samples in liquid nitrogen and in air, the cooling rate is uniform and is controlled by heat transfer in the quench medium instead of heat conduction in the sample. The heat transfer coefficient in 'static' air decreases with increasing sample size. For quench of mm-...
Fig. 16.Effects of extraction time and temperature on residual solid amount of rice bran during hot-water extraction with a solid to liquid ratio of 1:6. The reduced timetRis computed based on a 2min quench time from the reaction temperature to room temperature and an activation energy ofEa...
For example, in ethylene cracking units a closed heat exchanger quenches the cracked ethylene gas, and then transfers the heat to incoming hydrocarbon feed stock. This particular thermal loop is termed a “Hot Water Belt.” The cooled water from the hydrocarbon heat exchanger returns to the ...
Many areas are water challenged today, yet there is enough water in the air to quench our thirst – if only we knew how to tap this ubiquitous source. This report by Mallika Naguran describes solutions, techniques and technologies that are commercially available and applicable in varied scenarios...
a辊环在喷淬机上旋转,三个面均能喷到水 雾,冷却速度均匀可控。 The collar in spurts quenches machine on revolves, three surface can spurt the mist evenly, the cooling rate controllable.[translate] aForgotten Love 被忘记的爱[translate]
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The collected post-reaction liquid (1 mL) was added to a centrifuge tube containing ethanol (0.5 mL) to quench the reaction. The pollutant was analyzed using high-performance liquid chromatography (HPLC, Agilent 1100, USA). Na2S2O3 was used as quencher in TOC (TOC-L, shimadazu, Japan...
They are numerous and small (tens of micrometers across) because growth time is restricted between ascent and quench at the surface. Travel time between the chamber and the surface is too short to dissolve entire phenocrysts. Instead, they undergo fast phase transformation starting at their rims...
The difference in those two estimates may be reconciled by including the influence of forming tension, which interacts with quench rate to influence glass fiber structure and effectively lowers the fictive temperature (Pahler and Bruckner, 1985
The vessel preferably functions to quench the temperature of the incoming high temperature fluid by contacting the same with liquid. A typical application of the invention is in the quenching of process gases consisting of a number of components in such a way as to separate more volatile component...