This presentation contains basic principles of heat exchangers, Flow pattern, types of heat exchangers, selection criteria for heat exchangers, TEMA standars for heat exchangers design
HEAT EXCHANGERS. Heat exchangers are devices that facilitate the exchange of heat between two fluids that are at different temperature while keeping them from mixing with each other.
2. Double Pipe Heat Exchangers
3. A typical double pipe heat exchanger basically consists of a tube or pipe fixed concentrically inside a larger pipe or tube They are used when flow rates of the fluids and the heat duty are small (less than 5 kW) These are simple to construct, but may require a lot of physical space to achieve the desired heat transfer area.
4. Double-pipe exchangers is the generic term covering a range of jacketed 'U' tube exchangers normally operating in countercurrent flow of two types which is true double pipes and multitubular hairpins. One fluid flows through the smaller pipe while the other fluid flows through the annular space between the two pipes. Two types of flow arrangement: Parallel flow Counter flow
5. • The fluids may be separated by a plane wall but more commonly by a concentric tube (double pipe) arrangement shown in fig. If both the fluids move in the same direction, the arrangement is called a parallel flow type. In the counter flow arrangement the fluids move in parallel but opposite directions. In a double pipe heat exchanger, either the hot or cold fluid occupies the annular space and the other fluid moves through the inner pipe. The method of solving the problem using logarithmic mean temperature difference is typical and more iteration must be done. So it takes more time for the problem to solve. Therefore another method is practiced for solving this type of problems. This method is known as Effectiveness and Number of Transfer Units or simply ε-NTU method.“Effectiveness of heat exchangers is defined as actual heat transfer rate by maximum possible heat transfer rate”.The LMTD method may be applied to design problems for which the fluid flow rates and inlet temperatures, as well as a desired outlet temperature, are prescribed.
6. Application of Double Pipe Heat Exchanger Pasteurization or sterilization of food and bioproducts Condensers and evaporators of air conditioners Radiators for internal combustion engines Charge air coolers and intercoolers for cooling supercharged engine intake air of diesel engines.
HEAT EXCHANGERS. Heat exchangers are devices that facilitate the exchange of heat between two fluids that are at different temperature while keeping them from mixing with each other.
2. Double Pipe Heat Exchangers
3. A typical double pipe heat exchanger basically consists of a tube or pipe fixed concentrically inside a larger pipe or tube They are used when flow rates of the fluids and the heat duty are small (less than 5 kW) These are simple to construct, but may require a lot of physical space to achieve the desired heat transfer area.
4. Double-pipe exchangers is the generic term covering a range of jacketed 'U' tube exchangers normally operating in countercurrent flow of two types which is true double pipes and multitubular hairpins. One fluid flows through the smaller pipe while the other fluid flows through the annular space between the two pipes. Two types of flow arrangement: Parallel flow Counter flow
5. • The fluids may be separated by a plane wall but more commonly by a concentric tube (double pipe) arrangement shown in fig. If both the fluids move in the same direction, the arrangement is called a parallel flow type. In the counter flow arrangement the fluids move in parallel but opposite directions. In a double pipe heat exchanger, either the hot or cold fluid occupies the annular space and the other fluid moves through the inner pipe. The method of solving the problem using logarithmic mean temperature difference is typical and more iteration must be done. So it takes more time for the problem to solve. Therefore another method is practiced for solving this type of problems. This method is known as Effectiveness and Number of Transfer Units or simply ε-NTU method.“Effectiveness of heat exchangers is defined as actual heat transfer rate by maximum possible heat transfer rate”.The LMTD method may be applied to design problems for which the fluid flow rates and inlet temperatures, as well as a desired outlet temperature, are prescribed.
6. Application of Double Pipe Heat Exchanger Pasteurization or sterilization of food and bioproducts Condensers and evaporators of air conditioners Radiators for internal combustion engines Charge air coolers and intercoolers for cooling supercharged engine intake air of diesel engines.
• Types of heat exchangers
• Classification of heat exchangers
• components of heat exchanger
• Materials of heat exchanger
• troubleshooting of heat exchanger
Heat Exchanger (Shell and tubes) by sujan kharel..ansaluniversity3
Hey! This is the best presentation about Heat exchanger device of shell and tubes type and there is also mentioned their defects and overcome method...
Design Considerations for Plate Type Heat ExchangerArun Sarasan
A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids spread out over the plates. This facilitates the transfer of heat, and greatly increases the speed of the temperature change. Plate heat exchangers are now common and very small brazed versions are used in the hot-water sections of millions of combination boilers. The high heat transfer efficiency for such a small physical size has increased the domestic hot water (DHW) flowrate of combination boilers. The small plate heat exchanger has made a great impact in domestic heating and hot-water. Larger commercial versions use gaskets between the plates, whereas smaller versions tend to be brazed.
• Types of heat exchangers
• Classification of heat exchangers
• components of heat exchanger
• Materials of heat exchanger
• troubleshooting of heat exchanger
Heat Exchanger (Shell and tubes) by sujan kharel..ansaluniversity3
Hey! This is the best presentation about Heat exchanger device of shell and tubes type and there is also mentioned their defects and overcome method...
Design Considerations for Plate Type Heat ExchangerArun Sarasan
A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids spread out over the plates. This facilitates the transfer of heat, and greatly increases the speed of the temperature change. Plate heat exchangers are now common and very small brazed versions are used in the hot-water sections of millions of combination boilers. The high heat transfer efficiency for such a small physical size has increased the domestic hot water (DHW) flowrate of combination boilers. The small plate heat exchanger has made a great impact in domestic heating and hot-water. Larger commercial versions use gaskets between the plates, whereas smaller versions tend to be brazed.
Heat Transfer Printing, also known as Heat Printing, is a process through which images, or any other desired artwork, are printed onto a clothing item using a heat press. Here's how it works.
The objective of this experiment is to calculate the rate of the heat transfer log mean temperature difference, and the overall heat transfer coefficient in case of Counter flow
Design and Development of Parallel - Counter Flow Heat ExchangerAM Publications
Objective of this review paper reviews the literatures related to the parallel and counter flow of different types of heat exchangers and modifications made to improve the performance. Various papers were reviewed from those papers what are the developments in parallel and counter flow heat exchanger are summarized. The development of any system is need because it helps to optimize, improve performance or reduce the cost of system. The heat exchanger development did by many researchers using software’s, design methods, changing the designs, changing shape of tubes, applying second law of thermodynamics etc. The fluid velocity, Reynolds number, overall heat transfer coefficient, baffle spacing, number of baffles, pressure drop, LMTD, helix angle of tubes plays very important role in heat exchanger performance.
This presentation describes the considerations involved in selecting the shell and tube exchanger according to TEMA Designations. Also, it helps to identify whether fluid should be sent tube side or shell side
Type of heat exchanger. Which is mainly used in food industries, like dairy plant, for the pasturization, heat treatment of the beavrages or liquid raw material.
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
ONGC Training on Heat Exchangers, Compressors & PumpsAkansha Jha
Plant overview, working of compressors, pumps, cooling towers, gas turbines.
Mini- Project on shell & tube type heat exchangers in ONGC, Uran plant. Hence,
calculating the effectiveness of heat exchanger using the working data.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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Heat exchangers
1. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Heat Exchangers
Presented by:
Jamirul Islam
Roll No- 10300614019
2. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Contents
Introduction
Principles of Heat Exchangers
Flow Arrangement
Types of Heat Exchangers
Selection Criteria Of The Heat Exchangers
TEMA
Conclusion
3. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Introduction
A heat exchanger is a piece of equipment built for
efficient heat transfer from one medium to another.
They are widely used in space heating, refrigeration, air
conditioning, power plants, chemical plants,
petrochemical plants, petroleum refineries, natural gas
processing and sewage treatment.
4. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Principles of Heat Exchangers
Heat transferred from hot fluid to cold fluid
Heat transferred through the wall,
𝑸 = 𝑼 ∙ 𝑨 ∙ 𝑳𝑴𝑻𝑫
5. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Flow Arrangement
In parallel-flow heat exchangers, the two fluids enter the
exchanger at the same end, and travel in parallel to one
another to the other side.
Parallel-flow heat exchangers
6. H a l d i a I n s t i t u t e o f Te c h n o lo g y
In counter-flow heat exchangers the fluids enter the exchanger
from opposite ends. The counter current design is the most
efficient.
Counter-flow heat exchangers
Flow Arrangement
7. H a l d i a I n s t i t u t e o f Te c h n o lo g y
In a cross-flow heat exchanger, the fluids travel roughly
perpendicular to one another through the exchanger.
Cross-flow heat exchangers
Flow Arrangement
8. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Types Of Heat Exchangers
Double pipe heat exchanger
Plate heat exchanger
Shell and tube heat exchanger
Adiabatic wheel heat exchanger
Plate fin heat exchanger
Pillow plate heat exchanger
Fluid heat exchangers
Waste heat recovery units
Dynamic scraped surface heat exchanger
Spiral heat exchangers
9. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Double Pipe Heat Exchanger
In this heat exchanger the fluid to be cooled or heated
passes through the inner tube and the other fluid is passed
through outer tube to absorb or release the heat.
10. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Plate Heat Exchanger (PHE)
It is composed of multiple, thin, slightly separated
plates that have very large surface areas and fluid flow
passages for heat transfer.
The plates are often spaced by rubber sealing gaskets
which are cemented into a section around the edge of
the plates. The plates are pressed to form troughs at
right angles to the direction of flow of the liquid which
runs through the channels in the heat exchanger.
These troughs are arranged so that they interlink with
the other plates which forms the channel with gaps of
1.3–1.5 mm between the plates.
11. H a l d i a I n s t i t u t e o f Te c h n o lo g y
12. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Shell And Tube Heat Exchangers
Shell-and-Tube Heat Exchangers are the most important type
of Heat Exchangers.
It is used in almost every type of industry.
This type of heat exchanger consists of a set of tubes in a
container called a shell.
The fluid flowing inside the tubes is called the tube side fluid
and the fluid flowing on the outside of the tubes is the shell
side fluid.
13. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Main Components of Shell and
Tube Heat Exchangers
Tube side: Inside the tubes.
Shell side: Outside the tubes, between the tubes and the shell.
Tube sheet: A thick plate provided with holes (one per tube)
in which the tubes are fixed.
Tube bundle: Consists of tubes, tube sheet and baffle plates
Baffles: Baffles are flow-directing or obstructing vanes or
panels
14. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Selection Criteria Of The Heat Exchangers
Heat Transfer rate
Cost
Pumping Power
Size and Weight
Materials of Construction
Cleanability, maintenance and repair
15. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Tubular Exchanger Manufacture’s Association(TEMA) is the
most widely used ‘standard’ or ‘stipulated’ heat exchanger
‘design code'. This is a US code and is used together with
ASME Section VIII(for the design of unfired pressure
vessels).The TEMA code specifies the mechanical design
procedure, tolerances allowed and the dimensions of the
various parts of an exchanger.
TEMA
16. H a l d i a I n s t i t u t e o f Te c h n o lo g y
Conclusion
Heat exchangers are widely used in industries for both
heating and cooling.
Proper selection required sufficient knowledge of heat
exchangers types and operating requirements.
Mostly used heat exchangers are shell and tube heat
exchangers.
For any type of Heat exchangers counter flow pattern
has better efficiency
17. H a l d i a I n s t i t u t e o f Te c h n o lo g y
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