What Are The Theories Of Mass Transfer?


There are different theories dealing with mass transfer among phases, such as the two-film theory, the penetration theory and the surface renewal theory.

These theories are briefly discussed below.

  • 2.1. Two-film theory.
  • 2.2. Penetration theory.
  • 2.3. Surface renewal theory.



What is the Sherwood number analogous to?

Question: The Sherwood number for mass transfer is analogous to the Nusselt number for heat transfer. Dimensional analysis shows that for geometrically and dynamically similar systems where Re1i and Sc are the Reynolds and Schmidt numbers, respectively.


Why is operating line above equilibrium line?

Note that the operating line in absorption is above the equilibrium line, because solute is transferred from the gas to the liquid. In distillation we had material (the more volatile component) transferred from liquid to gas, and the operating line was below the equilibrium curve.


What is humidification in mass transfer?

Humidification: Cooling Tower. Model. The transfer of material between a pure liquid phase and a fixed gas that is insoluble in the liquid delt as humidification.


What includes in mass transfer operation?

These methods is covered by the term mass transfer operations which include techniques like gas absorption and stripping, liquid-liquid extraction, leaching, distillation, humidification, drying, crystallization and number of other separation techniques.


What is the value of the Schmidt number for ammonia?

Explanation: Schmidt number of benzene is 1.78 while that of carbon dioxide, acetic acid and ammonia are 0.78, 1.16 and 0.78 respectively.


What are the theories of mass transfer?

There are different theories dealing with mass transfer among phases, such as the two-film theory, the penetration theory and the surface renewal theory.

These theories are briefly discussed below.

  • 2.1. Two-film theory.
  • 2.2. Penetration theory.
  • 2.3. Surface renewal theory.


What is the second law of motion class 9?

Newton's second law states that the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object. The acceleration of the body is directly proportional to the net force acting on the body and inversely proportional to the mass of the body.


How do you make a MCQ in Word?

A multiple-choice question can be formatted by typing the question number and question text. Below the question text, place each answer choice on its own line. The answer choices must begin with a letter (a-t), followed by a period, followed a space, followed by the answer wording.


What are 3 types of assets?

Assets are generally classified in three ways:

  • Convertibility: Classifying assets based on how easy it is to convert them into cash.
  • Physical Existence: Classifying assets based on their physical existence (in other words, tangible vs.
  • Usage: Classifying assets based on their business operation usage/purpose.


What is heredity class 10th Ncert?

Heredity : It refers to the transmission of characters or traits from the parents to their offspring. Heredity is the continuity of features from one generation to another which are present in fertilised egg or zygote.


What is purpose of database administration?

The primary role of database administration is to ensure maximum up time for the database so that it is always available when needed. This will typically involve proactive periodic monitoring and troubleshooting. This in turn entails some technical skills on the part of the DBA.


What are the five geographical features of India?

The physical features of India can be divided into six categories, depending on their geological features:

  • The Himalayan Mountains.
  • The Northern Plains.
  • Indian Desert.
  • Peninsular Plateau.
  • Coastal Plains.
  • Islands.


Which of the following is a common example of phishing attack?

In this case, an attacker attempts to obtain confidential information from the victims. Attackers use the information to steal money or to launch other attacks. A fake email from a bank asking you to click a link and verify your account details is an example of deceptive phishing.


What is your idea about a variable?

In research, variables are any characteristics that can take on different values, such as height, age, temperature, or test scores. Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. The independent variable is the cause.


What is a popular house plant?

The pothos is a popular houseplant because of its hardiness. (Translation: it's very hard to kill.) It does well in various light conditions, although its best to avoid direct sunlight if possible, and they do best when their soil dries out in between waterings.


Is Kdrama a TV show?

Korean dramas (Korean: 한국 드라마; RR: Hanguk deurama), more popularly known as K-dramas, are television series in the Korean language, made in South Korea.


What characters do I need to escape in regex?

Escaped Characters in Regular Expressions

\\single backslash
\Qignore escaped characters until \E is found
\rcarriage return
\ssingle whitespace character
\Ssingle character that is NOT white space


What are the different types of thinking?

There are four types of “thinking skills”: convergent or analytical thinking, divergent thinking, critical thinking and creative thinking. We use these skills to help us understand the world around us, think critically, solve problems, make logical choices and develop our own values and beliefs.


What is CMOS inverter?

A CMOS inverter is a FET (field effect transistor), composed of a metal gate that lies on top of oxygen's insulating layer on top of a semiconductor. These inverters are used in most electronic devices which are accountable for generating data n small circuits.


What is the first step of negative feedback?

The four components of a negative feedback loop are: stimulus, sensor, control center, and effector. If too great a quantity of the chemical were excreted, sensors would activate a control center, which would in turn activate an effector. In this case, the effector (the secreting cells) would be adjusted downward.


Dated : 26-May-2022

Category : Education

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