Design of wavy fin and tube heat exchanger to enhance heat transfer using vortex generator

   The title of the project is ?Numericalainvestigationaof heat transferaenhancement afrom a wavy fin and tube heat exchangerausing vortexagenerator?     1.2 Proposal Statement       C

Project Title

Design of wavy fin and tube heat exchanger to enhance heat transfer using vortex generator

Project Area of Specialization

Computer Science

Project Summary

1.1 Project title 

  

The title of the project is “Numericalainvestigationaof heat transferaenhancement afrom a wavy fin and tube heat exchangerausing vortexagenerator” 

  

1.2 Proposal Statement   

  

Computational Fluid Dynamics (CFD) analysis of the “corrugatedafin and tube heat exchanger” using vortexagenerators is required to investigate the heat transfer enhancement from the heat exchanger . CFD analysis of the fin and tube heat exchanger will be done using  ANSYS-Fluent, mainly to find out the thermalaresistance(heat transfer) and the pressureadrop(friction) in different cases. Finally the best parameters will be selected to enhance the heat transfer from the fin and tube heat exchanger.  

  

1.3 Scope of the Project   

  

Basically in this project we have to increase theaeffectiveness of the heat exchanger by increasing the heat transfer power of the fin and tube heat exchanger and reducing the pressure losses. These heat exchangers are used to cool , Ram air, auxiliary power units,hydraulics and gearboxes in the planes. Thus in this project we will increase the heat transfer either by increasing the area of the fin(making it corrugated) or by making the flow (flowing over the fin) turbulent(by using vortex generators),so that the flow becomes attached to the fin or bringing variation in the concerned parameters. All the calculations and the simulations will be performed in ansys fluent. 

Project Objectives

The numerical investigation consists of the procedures to get the problem’s solution by computing the errors. In finaand tube heat exchanger fin and the tubes are interconnected to each other. The assembly is then used to transfer heat from the fluid flowing inside the tubes to the fluid flowing through the fin or vice versa. we use the corrugated or the wavy fin instead of a plate fin,comparatively the area of the fin increases,the turbulence in the fluid flowing over the fin increases,the fluid flow becomes more attached to the fin,hence the over all heat transfer between the fluids increases.But generally the accompanied pressureadrop is also increased which is not appreciateable.Our aim is to increase the heat transfer rate(reduce the thermalaresistance) and also to decrease the pressure drop.The aircraft can get flame out due to icing in the combuster or in the engine oil,even the aircraft engine may catch fire because of excessive heat in the fuel or the hydraulic system.all these issues can be resolved by increasing the efficiency of the heat exchangers installed in the aircrafts.  

Project Implementation Method

The use of vortex generators simulate the whole scenario of transferring heat from a makes the flow turbulent and hence more attached to the fin wavy fin and tube heat exchanger. The reliable one is Ansys surface, and hence the heat transfer rate increases. Furthermore FLUENT. The paper will include the previous researches in heat exchangers are used for energy recovery in the thermal this field as well. This survey paper will help innumerical power plants . The hot air coming of the plants can be passed investigation of heat transfer enhancement from the through the heat exchangers and can be cooled again in order to recycle.Tube heat exchangers attached to different types of fins
are widely used in industries.Mostly the requirement is to keep the size smaller and efficiency maximum.we can apply heat transfer enhancement techniques on the fin of the heat exchanger.weshould acknowledge that in the recent few years the heat enhancement methods have been divised.Mainly there are two main types of techniques,the passive techniques and the active techniques.In passive techniques we play with the fin surface geometries and also the fluids used in the exchanger. Because of high cost the active techniques are not appreciated.However the passive techniques like using corrugated fins instead of simple plain fin have become famous. It works because of two reasons,first is that corrugation in fin increases the surface area,second is that the thermal boundary Figure 1 : fin and tube heat exchanger Courtesy :Solitaire Overseas layer formed on the fin surface is interrupted frequently due to attachment and detachment of flow on the surface

Benefits of the Project

Tube heat exchangers attached to different types of fins
are widely used in industries.Mostly the requirement is to keep the size smaller and efficiency maximum.we can apply heat transfer enhancement techniques on the fin of the heat exchanger.weshould acknowledge that in the recent few years the heat enhancement methods have been divised.Mainly there are two main types of techniques,the passive techniques and the active techniques.In passive techniques we play with the fin surface geometries and also the fluids used in the exchanger. Because of high cost the active techniques are not appreciated.However the passive techniques like using corrugated fins instead of simple plain fin have become famous. It works because of two reasons,first is that corrugation in fin increases the surface area,second is that the thermal boundary Figure 1 : fin and tube heat exchanger Courtesy :Solitaire Overseas layer formed on the fin surface is interrupted frequently due to attachment and detachment of flow on the surface.The flow is PROBLEM STATEMENT attached and detached again and again
because of the corrugation in the fin.As we have concluded that the heat transfer enhancement is of immense significance, for that
ComputationaliFluidiDynamicsi(CFD)analysisiofitheicorrugated purpose we select corrugated fin because of being less expense
to ifinianditubeiheatiexchangeiusingivortexagenerators is required and more efficient,but mostly causing increase in pressure drop. investigate the heat transfer enhancement from the heat
Its evident from the experimental and numerical results that the exchanger .
CFD analysis of the fin and tube heat exchanger will corrugated fin and tube heat exchanger yields comparatively be done usingiANSYS-Fluent software mainly to find out the more heat transfer as compared to the simple fin.In addition to thermalaresistance (heat transfer enhancement rate) and the the corrugated fin the vortex generators are used to increase the pressureadrop(friction) in different cases. Finally the best performance of heat exchangers. These vortex generators parameters will be selected which enhance the heat transfer from actually produce vortices which last for few chord lengths on the fin and tube heat exchanger.

Technical Details of Final Deliverable

Fin and tube heat exchangers are of great importance in the field of heat transfer. Out of its many types wavy fin and tube heat exchangers are significant. In order to further augment the heat transfer passive techniques are used. Out of all those passive techniques, we have selected the vortex generators. Vortex generators make the flow turbulent and more attached to the fin surface. This interrupts the thermal boundary layer of flow. The intermixing of flow increases . Which in turn increases the convective heat transfer coefficient, the Nusselt number and finally the heat transfer is enhanced.

Final Deliverable of the Project

Software System

Core Industry

Education

Other Industries

Core Technology

Others

Other Technologies

Internet of Things (IoT)

Sustainable Development Goals

Required Resources

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