Top PDF Design the Shell and Tube Heat Exchanger with the Help of Programming using Matlab Software

Design the Shell and Tube Heat Exchanger with the Help of Programming using Matlab Software

Design the Shell and Tube Heat Exchanger with the Help of Programming using Matlab Software

and-tube heat exchangers involves rating a large number of different exchanger geometries to identify those that satisfy a given heat duty and a set of geometric and operational constraints. However, this approach is time- consuming and does not assure an optimal solution. Hence the present study explores the use of a non- traditional optimization technique; called particle swarm optimization (PSO), for design optimization of shell-and- tube heat exchangers from economic view point. Minimization of total annual cost is considered as an objective function. Three design variables such as shell internal diameter, outer tube diameter and baffle spacing are considered for optimization. Two tube layouts viz. triangle and square are also considered for optimization. Four different case studies are presented to demonstrate the effectiveness and accuracy of the proposed algorithm. The results of optimization using PSO technique are compared with those obtained by using genetic algorithm (GA).Heat exchangers are an integral component of all thermal systems. Their designs should be adapted well to the applications in which they are used; otherwise their performances will be deceiving and their costs excessive. Heat exchanger design can be a complex task, and advanced optimization tools are useful to identify the best and cheapest heat exchanger for a specific duty. The present study has demonstrated successful application of PSO technique for the optimal design of a shell-and-tube heat exchanger from economic view point. The presented PSO technique is simple in concept, few in parameters and easy for implementation. These features boost the applicability of the PSO particularly in thermal system design, where the problems are usually complex and have a large number of variables and discontinuity in the objective function. The presented PSO technique's ability is demonstrated using different literature case studies and the performance results are compared with those obtained by the previous researchers. PSO converges to optimum value of the objective function within quite few generations and this feature signifies the importance of PSO for heat exchanger optimization. The PSO technique can be easily modified to suit optimization of various thermal systems.
Show more

7 Read more

SIMULATION MODELLING ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER

SIMULATION MODELLING ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER

drafting and analysis. Simulation tools enable us to be creative and to quickly test new ideas that would be much More difficult, time-consuming, and expensive to test in the lab. (Jeffrey D. Wilson Nasa Glenn Research Center) It also help us reduce cost and time -to-market by testing our designs on the computer rather than in the field. Many of the individual tasks within the overall design process can be performed using a computer. Base on this discuss the following policy are necessary, efforts should be made to adopt and popularize the design-, FEA, DFM, DFE ETC especially for the benefits of mankind who make up a great percentage of the Nation„s population. If, the use of machine design adopted, the problem in agricultural processing Equipment will be minimized and hunger and poverty will be eradicated , detailed experiment of shell and tube Heat exchanger will be presented in the future work.
Show more

18 Read more

Design Optimization of Shell and Tube Heat Exchanger by Vibration Analysis

Design Optimization of Shell and Tube Heat Exchanger by Vibration Analysis

In this paper a simplified approach to optimize the design of Shell Tube Heat Exchanger [STHE] by flow induced vibration analysis [FVA] is presented. The vibration analysis of STHE helps in achieving optimiza- tion in design by prevention of tube failure caused due to flow induced vibration. The main reason for tube failure due to flow induced vibration is increased size of STHE. It is found that in case of increased size of STHE, the surface area and number of tubes increases, thus the understanding and analysis of vibration be- comes a very difficult task. Again it is found that flow induced vibration analysis is considered as an integral part of mechanical & thermal design of STHE. The detailed design, fabrication, testing and analysis work was carried out at Alfa Laval (India), Ltd., Pune-10.
Show more

6 Read more

HEAT TRANSFER OPTIMIZATION OF SHELL AND TUBE HEAT EXCHANGER THROUGH CFD ANALYSIS

HEAT TRANSFER OPTIMIZATION OF SHELL AND TUBE HEAT EXCHANGER THROUGH CFD ANALYSIS

With the simplified approaches, one can predict the shell side heat transfer coefficient and pressure drop successfully, however for visualization of the shell side flow and temperature fields in detail, a full CFD model of the shell side is needed. With ever increasing computational capabilities, the number of cells that can be used in a CFD model is increasing. Now it is possible to model an industrial scale shell- and-tube heat exchanger in detail with the available computers and software’s. By modeling the geometry as accurately as possible, the flow structure and the temperature distribution inside the shell can be obtained. This detailed data can be used for calculating global parameters such as heat transfer coefficient and pressure drop that can be compared with the correlation based or experimental ones[6]. Moreover, the data can also be used for visualizing the flow and temperature fields which can help to locate the weaknesses in the design such as recirculation and relaminarization zones.
Show more

14 Read more

Design and Development of Shell & Tube Heat Exchanger for Beverage

Design and Development of Shell & Tube Heat Exchanger for Beverage

design is carried out using in-house developed software for design and drafting. This dedicated software enables qualified engineers to accomplish complex design calcu- lations complying strictly with the requisite international codes and standards. The software also generates fabrica- tion drawings to scale and 3-D images of the Exchanger thereby giving warning of any foul-up/mis-match in noz- zles, RF-Pads and in the dimensions of various compo- nents. Also an experienced team of design engineers un- dertakes thermal and mechanical design of complex heat exchangers and generate fabrication drawings to scale along with weights and estimates based on customer’s specifications. These designs are optimized to arrive at an optimal size. After carrying out the design, the final output is in an AutoCAD drawing format (DWG) or DWF (Web format).
Show more

5 Read more

IJRTSM INTERNATIONAL JOURNAL OF RECENT TECHNOLOGY SCIENCE & MANAGEMENT CFD ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER USING BAFFLES WITH DIFFERENT ANGLE OF INCLINATION Karishma Jawalkar 1, Yogesh Kumar Tembhurne2 , Dr. Mohit Gangwar 3

IJRTSM INTERNATIONAL JOURNAL OF RECENT TECHNOLOGY SCIENCE & MANAGEMENT CFD ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER USING BAFFLES WITH DIFFERENT ANGLE OF INCLINATION Karishma Jawalkar 1, Yogesh Kumar Tembhurne2 , Dr. Mohit Gangwar 3

In present day shell and tube heat exchanger is the most common type heat exchanger widely use in oil refinery and other large chemical process, because it suits high pressure application. Firstly modeling done on CATIA software and the process in solving simulation consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 14.0. The objective of the project is design of shell and tube heat exchanger with series of baffles and study the flow and temperature field inside the shell using ANSYS software tools. The process in solving simulation consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 14.0. The objective of the project is design of shell and tube heat exchanger with baffle and study the flow and temperature field inside the shell using ANSYS software tools. The heat exchanger contains 5 tubes and 600 mm length shell diameter 90 mm. The helix angle of baffle will be varied from 10 0 to 20 0 . In simulation will show how the pressure vary in shell due to different helix angle and flow rate. The flow pattern in the shell side of the heat exchanger with continuous baffles was forced to be rotational and Baffles Series due to the geometry of the continuous baffles, which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger.
Show more

11 Read more

Design and Modelling of Shell and Tube Heat Exchanger with Cut Segmental Baffles

Design and Modelling of Shell and Tube Heat Exchanger with Cut Segmental Baffles

Abstract— The transfer of heat from one fluid to another fluid is an important operation for most of the process in chemical industries by using a heat transfer equipment. The equipment which is used for heat transfer process is generally known as heat exchangers. The heat exchangers are normally classified depending on the transfer process occurring in them. Shell and tube heat exchanger (STHE) the most common type of heat exchanger which is used in Oil refineries. This project work is focused on the study of STHE, their types, design considerations and their modes of failure which were used in Oil refineries in detail. The thermal performance and pressure drop are considered as major factors for the design and evaluation of STHE. The main objective characteristic of Shell and tube heat exchanger design is the procedure for specifying the design of heat exchanger, their heat transfer surface area, pressure drops and checking whether the assumed design satisfies the requirements. The Shell and tube heat exchanger and baffles such as single segmental baffle, double segmental baffle and helical baffle is designed as per ASME Boiler and Pressure Vessel Code, Section VIII and Tubular Exchanger Manufacturers Association (TEMA) standards. The modelling of the designed STHE with various baffles is carried out by using Solid Works software. In this work, the existing model of STHE is designed with different baffles and modelled.
Show more

6 Read more

Thermal design of tube and shell type Heat exchanger –a review

Thermal design of tube and shell type Heat exchanger –a review

Baffles serve two important functions. They support the tubes during assembly and operation and help prevent vibration from flow induced eddies and direct the shell side fluid back and forth across the tube bundle to provide effective velocity and Heat Transfer rates. The diameter of the baffle must be slightly less than the shell inside diameter to allow assembly, but must be close enough to avoid the substantial performance penalty caused by fluid bypass around the baffles. Shell roundness is important to achieve effective sealing against excessive bypass. Baffles can be made from a variety of materials compatible with the shell side fluid. They can be punched or machined. Some baffles are made by a punch which provides a lip around the tube hole to provide more surfaces against the tube and eliminate tube wall cutting from the baffle edge. The tube holes must be precise enough to allow easy assembly and field tube replacement, yet minimize the chance of fluid flowing b etween the tube wall and baffle hole, resulting in reduced thermal performance and increased potential for tube wall cutting from vibration. Baffles do not extend edge to edge, but have a cut that allows shell side fluid to flow to the next baffled chamber. For most liquid applications, the cuts areas represent 20-25% of the shell diameter. For gases, where a lower pressure drop is desirable, baffle cuts of 40-45% is common.
Show more

7 Read more

Design of Shell and Tube Type Heat Exchanger using CFD Tools

Design of Shell and Tube Type Heat Exchanger using CFD Tools

In present day shell and tube heat exchanger is the most common type heat exchanger widely used in oil refinery and other large chemical process, because it suits high pressure application. The process in solving CFD consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 13.0. The objective of the project is design of shell and tube heat exchanger with helical baffle and study the flow and temperature field inside the shell using ANSYS software tools. The heat exchanger contains 7 tubes and 800 mm length shell diameter 90 mm. The helix angle of helical baffle will be varied from 00 to 20°. In CFD will show how the temperature varies in shell due to different helix angle and flow rate. The flow pattern in the shell side of the heat exchanger with continuous helical baffles was forced to be rotational and helical due to the geometry of the continuous helical baffles, which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger. There is a wide application of coiled heat exchanger in the field of industrial applications for its enhanced heat transfer characteristics and compact structure. Lots of researches are going on to improve the heat transfer rate of the helical coil heat exchanger. Here, in this work, an analysis has been done for a tube-in-tube helical heat exchanger with constant heat transfer coefficient with parallel flow. There are various factors present that may affect the heat transfer characteristics of the heat exchanger. The flow pattern in the shell side of the heat exchanger with continuous helical baffles was forced to be rotational and helical due to the geometry of the continuous helical baffles, which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger. There is a wide application of coiled heat exchanger in the field of industrial applications for its enhanced heat transfer characteristics and compact structure. Lots of researches are going on to improve the heat transfer rate of the helical coil heat exchanger. Here, in this work, an analysis has been done for a tube-in-tube helical heat exchanger with constant heat transfer coefficient with parallel flow. There are various factors present that may affect the heat transfer characteristics of the heat exchanger.
Show more

7 Read more

A REVIEW ON SHELL AND TUBE HEAT EXCHANGER USING VARIOUS DESIGN ARRANGEMENT OF BAFFLE

A REVIEW ON SHELL AND TUBE HEAT EXCHANGER USING VARIOUS DESIGN ARRANGEMENT OF BAFFLE

Rajeev Mukherjee [1] explains the basics of exchanger thermal design, covering such topics as: STHE components; classification of STHEs according to construction and according to service; data needed for thermal design; tube side design; shell side design, including tube layout, baffling, and shell side pressure drop; and mean temperature difference. The basic equations for tube side and shell side heat transfer and pressure drop. Correlations for optimal condition are also focused and explained with some tabulated data. This paper gives overall idea to design optimal shell and tube heat exchanger. The optimized thermal design can be done by sophisticated computer software however a good understanding of the underlying principles of exchanger designs needed to use this software effectively.
Show more

5 Read more

CFD ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER FOR PRE-HEATING OF BIODIESEL

CFD ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER FOR PRE-HEATING OF BIODIESEL

The objective of this work is to improve the performance characteristics of a high viscous non-edible vegetable oil as alternative fuel to diesel fuel. The pre-heating process of fuel is used to reduce the viscosity of high viscous fuels. A double pipe heat exchanger is used to operate using the heat of engine exhaust. A bypass valve is used to control the mass flow rate of exhaust gas to heat exchanger. A single cylinder diesel engine is used for testing. The necessary arrangements are done to attach the heat exchanger to engine. The engine is tested with biodiesel. The heat exchanger design is made using CATIA V5 software. The heat exchangers are analyzed using ANSYS FLUENT. The results are compared and the suitable heat exchanger is proposed.
Show more

7 Read more

Analysis of Shell and Tube Heat Exchangers

Analysis of Shell and Tube Heat Exchangers

Abstract - Heat exchangers have always been an important part to the lifecycle and operation of many systems. A heat exchanger is a device built for efficient heat transfer from one medium to another in order to carry and process energy. Typically one medium is cooled while the other is heated. They are widely used in petroleum refineries, chemical plants, and petrochemical plants. The purpose of this thesis work is to design an Oil Cooler, especially for shell and tube heat exchange which is the majority type of liquid to liquid heat exchanger with baffle for induced turbulence and higher heat transfer coefficient. Modeling is done by using PRO- Engineer, and analysis carried out in Ansys software 14.5. General design consideration and design procedure are also illustrated in this thesis in design calculation; the Ansys software 14.5 and HTRI software are used. Within the project work the analysis are done for heat exchanger with baffle and without baffle also used four material for tubes (brass, nickel, carbon steel ,stainless steel) and observed the heat transfer rate is increased for heat exchanger with baffle and when we used brass material. From the theoretical modeling the convection heat transfer coefficient along with the bulk temperature are found out and imposed as boundary condition to predict the. Temperature distribution, heat flux and thermal gradient in heat transfer analysis. By comparing the result for four materials, the stress is less when brass material is used.
Show more

5 Read more

CFD Analysis of Heat Transfer Prediction for Corrugated Shell & Tube Heat Exchanger

CFD Analysis of Heat Transfer Prediction for Corrugated Shell & Tube Heat Exchanger

Abstract: Corrugated shell and corrugated tube were employed instead of smooth shell and smooth tube through a shell and tube heat exchanger in this Paper. Distinct arrangements of concave and convex type of corrugated tubes were investigated. Previous studies have focused on only thermal characteristics of corrugated tubes. Hence, in the present work heat transfer coefficient is studied for a shell and tube heat exchanger made of corrugated shell and corrugated tube by using software solid works and heat transfer rate is evaluated for different arrangements of corrugated tubes. Maximum heat transfer was observed for heat exchanger made of convex corrugated tube and concave corrugated shell. This paper mainly focuses on improving the heat transfer capability in a shell and tube heat exchanger by varying tubes geometry using solid works. Study carried out on the design of the heat exchanger and by increasing diametrical ratio to prove more heat transfer is possible.
Show more

16 Read more

SHELL AND TUBE HEAT EXCHANGER CFD ANALYSIS USING BAFFLES WITH DIFFERENT ANGLE OF INCLINATION

SHELL AND TUBE HEAT EXCHANGER CFD ANALYSIS USING BAFFLES WITH DIFFERENT ANGLE OF INCLINATION

CFD is a sophisticated computationally-based design and analysis technique. CFD software gives you the power to simulate flows of gases and liquids, heat and mass transfer, moving bodies, multiphase physics, chemical reaction, fluid-structure interaction and acoustics through computer modeling. This software can also build a virtual prototype of the system or device before can be apply to real-world physics and chemistry to the model, and the software will provide with images and data, which predict the performance of that design.
Show more

8 Read more

Optimization of Shell and Tube Heat Exchanger for Tube Arrangements

Optimization of Shell and Tube Heat Exchanger for Tube Arrangements

exchanger arrangement. This paper focused on CFD part. So, no need to explain about experimental part. Here, use 2 volumes in the domain .Shell volume and tube volume. Hot water flows through the tube side with initial velocity of .7 m/sec. Also cold water flow through the shell side with initial velocity of .9 m/sec. Both hot water and cold water inlets considered as velocity inlet and outlets considered as pressure outlet and no slip boundary condition used. Turbulent kinetic energy added in the boundary condition, because shell side treated as turbulent side.
Show more

5 Read more

Cataract Detection

Cataract Detection

Vasiny [2]: Proposed a simplified model of shell and tube type heat exchanger using kern’s method to cool the water from 55 to 45 by using water at room temperature. And carried out steady state thermal analysis on ANSYS 14.0 and then the same has been fabricated using the exact dimensions as derived from the designing. And have tested the heat exchanger under various flow and ambient temperature conditions using the insulations of aluminium foil, cotton wool, tape, foam, paper to see its effect on the performance of the heat exchanger. Also tried to create the turbulence by closing the pump opening and observed its effect on its effectiveness. Concluded that the insulation is a good tool to increase the rate of heat transfer and cotton wool and the tape have given the best values of effectiveness. There is no any direct relation between the turbulence and effectiveness and effectiveness attains its peak at some intermediate value. The ambient conditions for which the heat exchanger was tested do not show any significant effect over the heat exchanger’s performance.
Show more

8 Read more

Numerical analysis of The Tube Bank pressure drop of a Shell and tube heat exchanger using flat face header

Numerical analysis of The Tube Bank pressure drop of a Shell and tube heat exchanger using flat face header

Pressure drop is the main parameters describing the efficiency and acceptance of a particular shell and Pressure drop across the tube side is inversely proportional to the viz. Higher the pressure drop lower is the heat transfer and hence the required pumping power is high and correspondingly higher is the expense. The pressure drop on the tube side can be Inlet nozzle, pressure drop in the tube bank, and pressure drop in the outlet nozzle. This report provides an insight into the research done on the analysis of the pressure drop in the tubes of a shell and tube heat exchanger. Although a remarkable contribution has been done through analytical relations governing the pressure drop and the numerical analysis of the pressure drop on the shell side of a shell and tube heat exchanger, cogent contribution can be made rovided enables us to study detailed flow behavior (pressure drop) in the tubes using the TEMA BEM viz. a Flat Head Single Pass SHTX numerically viz. the use of computation for the mentioned research. Hence to achieve the task numerically the use 6.0has been made assuming that the flow is steady and isothermal. Two different pressure zones have been identified viz. (1) High pressure drop zone (2) Low pressure drop zone across the tube banks. It was observed that nearly fifty percent of the tubes lie under each category. The pressure drop has been computed numerically at a specific inlet velocity and then correlated at different inlet
Show more

5 Read more

Temperature Analysis of Shell and Tube Heat Exchanger

Temperature Analysis of Shell and Tube Heat Exchanger

Andre L.H. Costa and Eduardo M. Queiroz [1] presented a paper which deals with study about the design optimization of shell-and-tube heat exchangers. The formulated problem consists of the minimization of the thermal surface area for a certain service, involving discrete decision variables. Additional constraints represent geometrical features and velocity conditions which must be complied in order to reach a more realistic solution for the process task.

6 Read more

Heat Transfer Enhancement of Shell and Tube Heat Exchanger

Heat Transfer Enhancement of Shell and Tube Heat Exchanger

By fouling we mean any accumulation of unwanted material on surfaces of a process equipment hinders the desired operation. This issue is particularly common in food industry, chemical industry and energy industry (including waste-to- energy applications). Overall heat transfer co efficient then falls due to higher thermal resistance of the layer,which implies lower heat exchanger efficiency and in turn , huge economic losses. For example, Hewitt (1998) provided and estimate as large as 1.4 billion USD per year for plants in the United States. It is therefore obvious that fouling must be taken into account when designing any process unit that is expected to work with a fluid having a high fouling propensity. We must eliminate as many stagnation zones with swirling character of flow as possible or atleast minimize formation of eddies. Plan surfaces and suitable materials should be used to further lower fouling rate. Additionally, units should be constructed in such a way that cleaning of heat transfer surfaces and other essential regions is easy.
Show more

12 Read more

Failure Analysis of Tube and Shell Heat Exchanger

Failure Analysis of Tube and Shell Heat Exchanger

Abstract: This paper will present an over view on the different types failures occurring in heat exchangers and the maintenance procedure adopted for smooth operation of the heat exchanger. Heat exchanger is present as a static equipment at Hindustan Organic Chemicals Limited. The operation of this heat exchanger involves the production of Phenol from TAR COLUMN. The case study deals with the failure analysis of heat exchanger in which its design is checked. In HOCL, a shell and tube heat exchanger is used in the production line of phenol. Hot oil at 328°C and 10.5 kg/cm2 is passing through the exchanger tubes. SS316 material is used in the tubes. 120 tubes at the top of the heat exchanger fails regularly and hence the plant have to be closed down for at least 2 days on each failure. The failure causes loss of hot oil (therminol) which cost approximately Rs 850 per litre. About 1cm drop in oil level costs about 5 lakhs. In order to overcome this problem, the design of this heat exchanger is analysed for finding out the reason behind this failure.
Show more

5 Read more

Show all 10000 documents...