نتایج جستجو برای: m nrtl model

تعداد نتایج: 2553182  

2012
V. K. Rattan

Isobaric vapor-liquid equilibrium measurements are reported for binary mixture of 2-Methyltetrahydrofuran and Cumene at 97.3 kPa. The data were obtained using a vapor recirculating type (modified Othmer's) equilibrium still. The mixture shows slight negative deviation from ideality. The system does not form an azeotrope. The experimental data obtained in this study are thermodynamically consist...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - پژوهشکده علوم انسانی و اجتماعی 1391

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...

بررسی تعادل‌های سیستم های بخار-مایع و مایع-مایع، نقش مهمی در طراحی، بهینه سازی و کنترل فرایندهای جداسازی دارد. در این تحقیق تعادل های فازی بخار-مایع سامانه های دوتایی(1-پروپانول با آب و اتیل استات)، همچنین تعادل های فازی مایع-مایع سامانه های سه تایی (آب، اتیلن گلایکول، 1-هپتانول) و (آب، اتیلن گلایکول، 2-اتیل 1-هگزانول) با استفاده از مدل های ترمودینامیکی NRTL و UNIQUAC مورد مطالعه قرار گرفتند. ه...

Journal: :journal of water sciences research 2010
a khosronejad

in the present paper, a 3d numerical model has been applied to predict the flow hydrodynamics around power intakes within the dez dam reservoir. the dez dam is a 203 m high, double arch concrete dam which is constructed by italians in 1962. since then, sedimentation in reservoirhas continued and since the dam does not have bottom outlet, the reservoir bed level is raising by a rate of about 2.5...

1999
Stephen T. Harding Christodoulos A. Floudas

A novel approach for enclosing all heterogeneous and reactive azeotropes in multi-component mixtures is presented. The thermodynamic conditions for azeotropy form a system of nonlinear equations. A deterministic global optimization approach is introduced in which the global optimization problem may contain multiple global minima and there is a one-to-one correspondence between each global minim...

Journal: :Industrial & Engineering Chemistry Research 2021

The low critical solution temperature (LCST) and minimum salt concentration that cause phase splitting in water short-chain alcohol mixtures were determined experimentally. alcohols, which are completely miscible with (methanol, ethanol, 1-propanol, 2-propanol, tert-butanol) most of the common salts (those Na+, K+, Ca2+, NH4+ cations Cl–, SO42–, CO32–, NO3– anions), studied. Experimentally data...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1389

اطلاعات تعادلی مایع- مایع برای سیستم سه تایی (اتیلن گلایکول + بنزن + سیکلوهگزان) در دما-های 15/298، 15/308و 15/318 کلوین و فشار یک اتمسفر به دست آمده است. داده های تعادلی مربوط به سیستم سه تایی (n- فرمیل مورفولین + بنزن+ سیکلوهگزان) در سه دمای 15/303، 15/308و 15/313 کلوین نیز به دست آمده است. همچنین در این پروژه داده های تعادلی مربوط به سیستم شبه سه تایی (سولفولان+ 2-پروپانول+ بنزن+ سیکلوهگزان)...

Journal: :journal of sciences islamic republic of iran 0

in this paper, we show that the chapman-kolmogorov formula could be used as a recursive formula for computing the m-step-ahead conditional density of a markov bilinear model. the stationary marginal probability density function of the model may be approximated by the m-step-ahead conditional density for sufficiently large m.

2013
Padhraic Smyth

1. Construct a generative or forward model M with parameters θ of how data D can be generated. We can think of this generative model as a stochastic simulator for the data, with parameters θ. We will assume for now that M , the structure or functional form of the model, is known, but that the parameters θ are unknown1. An example would be that M is a Gaussian (Normal) probability density functi...

Journal: :International journal of applied thermodynamics 2023

The presence of both critical and azeotropic states in the vapor-liquid equilibria (VLE) is a very important issue chemical refrigeration engineering. knowledge phase behavior (subcritical phase/supercritical phase) refrigerant allows designing optimizing industrials processes. However, it rare to find data for this information, which poses great challenge researchers develop predictive correla...

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