AECH Topic 2

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following statements is true regarding batch and semi-batch systems?

They maintain a steady state throughout their operation.

They are classified as transient systems. (correct)

They operate continuously without interruption.

They are only used for solid materials.

All batch processes operate in a steady state.

False

What is a block diagram used for in a chemical process?

It provides a simple representation of the process.

In a chemical system, a system that changes over time is known as a __________ system.

transient Signup and view all the answers

Match the following processes to their characteristics:

Batch Process = Uses pre-measured amounts Continuous Process = Operates without interruption Semi-Batch Process = Combines elements of both batch and continuous Transient System = Changes over time Signup and view all the answers

What type of diagram is primarily used to show the detailed arrangement of piping and instrumentation in a chemical process?

Piping & Instrumentation Diagram Signup and view all the answers

Semi-batch processes are exclusively used in chemical reactions involving liquids.

False Signup and view all the answers

What is the main difference between a steady state and a transient system?

A steady state system maintains constant conditions, while a transient system changes over time. Signup and view all the answers

Which of the following describes a batch process?

The feed is charged into a vessel at the beginning of the process. Signup and view all the answers

A semi-batch process allows for both continuous input of feed and continuous removal of products.

False Signup and view all the answers

What is an example of a continuous process?

A distillation column. Signup and view all the answers

In a __________ process, no material crosses the system boundary until the products are removed.

batch Signup and view all the answers

Match the following systems with their classification:

Microwave Oven = Batch Process Boiling Tea Kettle = Batch Process Storage Tank at a Refinery = Continuous Process Distillation Column = Continuous Process Signup and view all the answers

Which statement is true regarding steady state and transient systems?

Steady state implies that process variables remain constant over time. Signup and view all the answers

A continuous process can be described as one where material flows in and out of the system without interruption.

True Signup and view all the answers

What characterizes a semi-batch process?

Feed is added continuously, but product is not removed, or starts with a full vessel and products are continuously removed. Signup and view all the answers

Which of the following describes an Open System?

Material can cross the system boundary. Signup and view all the answers

A Closed System allows materials to enter and exit freely.

False Signup and view all the answers

What distinguishes a Semi-Batch Process from a Batch Process?

A Semi-Batch Process allows for the addition of materials during the operation, while a Batch Process does not. Signup and view all the answers

In a __________ system, material may enter, exit, or accumulate within the system.

Open Signup and view all the answers

Which of the following processes describes a system in which the output remains constant over time?

Steady State Signup and view all the answers

In a Steady State process, conditions such as temperature or pressure can change.

False Signup and view all the answers

Give an example of a Batch Process.

Baking a cake. Signup and view all the answers

A __________ system includes equipment like reactors to process materials in stages, with limited input/output options.

Batch Signup and view all the answers

Match the types of systems to their characteristics:

Open System = Material crosses system boundary Closed System = No material crosses system boundary Steady State = Constant conditions over time Transient System = Conditions changing over time Signup and view all the answers

Which characteristic is true of a Continuous Process?

Materials continuously flow into and out of the system. Signup and view all the answers

Study Notes

Batch, Semi-Batch, and Continuous Processes

Batch: All material is added at the start, and all products are removed at the end.
Continuous: Material continuously enters and leaves the system throughout the cycle.
Semi-Batch: Processes that fall between batch and continuous.
- Either material enters continuously, but product is not removed.
- Or, the system starts full and products are continuously removed.

Steady State and Transient Systems

Steady State: Process variables (temperature, pressure, flow, etc.) remain constant over time.
Transient System: Time is an important variable, and process variables can vary over time.

Black Box Representation

Focuses on inputs and outputs of the system, not internal details.
Useful for analyzing a system without needing to understand its inner workings.

Open and Closed Systems

Closed System: No material crosses the system boundary.
- Changes can occur inside the system, but material doesn't enter or exit.
Open System: Material crosses the system boundary.
- Can experience changes within the system, with material entering, leaving, or accumulating.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Explore the concepts of batch, continuous, and semi-batch processes through this quiz. Understand the distinctions between steady state and transient systems, and learn to represent processes using black box models. Ideal for students studying process engineering.

AECH Topic 2

Podcast Beta

Questions and Answers

Which of the following statements is true regarding batch and semi-batch systems?

All batch processes operate in a steady state.

What is a block diagram used for in a chemical process?

In a chemical system, a system that changes over time is known as a __________ system.

Match the following processes to their characteristics:

What type of diagram is primarily used to show the detailed arrangement of piping and instrumentation in a chemical process?

Semi-batch processes are exclusively used in chemical reactions involving liquids.

What is the main difference between a steady state and a transient system?

Which of the following describes a batch process?

A semi-batch process allows for both continuous input of feed and continuous removal of products.

What is an example of a continuous process?

In a __________ process, no material crosses the system boundary until the products are removed.

Match the following systems with their classification:

Which statement is true regarding steady state and transient systems?

A continuous process can be described as one where material flows in and out of the system without interruption.

What characterizes a semi-batch process?

Which of the following describes an Open System?

A Closed System allows materials to enter and exit freely.

What distinguishes a Semi-Batch Process from a Batch Process?

In a __________ system, material may enter, exit, or accumulate within the system.

Which of the following processes describes a system in which the output remains constant over time?

In a Steady State process, conditions such as temperature or pressure can change.

Give an example of a Batch Process.

A __________ system includes equipment like reactors to process materials in stages, with limited input/output options.

Match the types of systems to their characteristics:

Which characteristic is true of a Continuous Process?

Study Notes

Batch, Semi-Batch, and Continuous Processes

Steady State and Transient Systems

Black Box Representation

Open and Closed Systems

Studying That Suits You

Related Documents

Description

More Like This

Batch Job Initiation and Processes

Batch Job Process Initiation

Linux Processes and System Initialization

Batch System in Fermentation Process