نتایج جستجو برای: non isothermal heating rates

تعداد نتایج: 1751253  

Journal: :Bioresource technology 2012
Sriraam R Chandrasekaran Philip K Hopke

Grass pellets are a renewable resource that have energy content similar to that of wood. However, the higher ash and chlorine content affects combustion. Thermal degradation analysis of a fuel is useful in developing effective combustion. Thermogravimetric analysis (TGA) of the thermal degradation of grass pellets under inert (nitrogen) and oxidizing (air) atmospheres was conducted. Non-isother...

2003
Mamoru Shimizu Tetsu Kitayama Shin Sasaki Yasushi Suto

We consider non-gravitational heating effects on galaxy clusters on the basis of the Monte-Carlo modeling of merging trees of dark matter halos combined with the thermal evolution of gas inside each halo. Under the assumption of hydrostatic equilibrium and the isothermal gas profiles, our model takes account of the metallicity evolution, metallicity-dependent cooling of gas, supernova energy fe...

Journal: :Applied Mathematical Modelling 2022

Induction heating is used in many industrial applications to heat electrically conductive materials. The coupled electromagnetic-thermal induction process non-linear general, and for ferromagnetic materials it becomes challenging since both the electromagnetic thermal responses are non-linear. As a result of existing non-linearities, simulating task. In present work, transient finite element so...

Journal: :Engineering Letters 2008
Cristian-Andi Nicolae Margareta Anca Grigorescu Raluca Augusta Gabor

Thermal degradation of poly(lactic acid) (PLA), a biodegradable and bioabsorbable polyester, has been investigated under inert atmosphere using both isothermal and dynamic heating regimes.. Two kinetic models, one for isothermal and the other for dynamic heating regims were used to fit the experimental data. It has been demonstrated that the thermal degradation of PLA is a one-stage process wit...

Journal: :Applied sciences 2021

The effect of temperature on structural response is a concern in engineering applications. literature has highlighted that applied loads change the system vibration behaviour. However, there limited information available about impacting dynamic response. This paper investigated heating rates effects modal parameters for both with crack and without conditions cantilever beam. A beam subjected to...

Journal: :SIAM Journal of Applied Mathematics 2008
David O. Olagunju Anand B. Vyas Shangyou Zhang

We consider non-isothermal torsional flow between two coaxial parallel plates with heat transfer at the upper rotating plate, constant temperature on the lower stationary plate, and no heat loss at the fluid-air interface. Viscous heating is modelled by a Nahme law with exponential dependence on temperature. Due to the highly nonlinear nature of the governing equations an exact solution is not ...

2015
Takeo Yoshimura Takamasa Suzuki Shigeru Mineki Shokichi Ohuchi Shuang-yong Xu

Rolling circle amplification (RCA) generates single-stranded DNAs or RNA, and the diverse applications of this isothermal technique range from the sensitive detection of nucleic acids to analysis of single nucleotide polymorphisms. Microwave chemistry is widely applied to increase reaction rate as well as product yield and purity. The objectives of the present research were to apply microwave h...

Journal: :The Review of scientific instruments 2012
Kechao Xiao John M Gregoire Patrick J McCluskey Joost J Vlassak

We present a scanning AC nanocalorimetry method that enables calorimetry measurements at heating and cooling rates that vary from isothermal to 2 × 10(3) K/s, thus bridging the gap between traditional scanning calorimetry of bulk materials and nanocalorimetry. The method relies on a micromachined nanocalorimetry sensor with a serpentine heating element that is sensitive enough to make measureme...

2002
Anna Vainchtein

We consider a non-isothermal one-dimensional model of martensitic phase transitions that incorporates a finite bar with a non-monotone temperature-dependent stress–strain law and non-zero latent heat. Two dissipation mechanisms are considered: heat conduction and the internal viscous dissipation of kinetic origin. Time-dependent displacement and ambient temperature are prescribed at the ends of...

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