DESIGN AND FABRICATION OF SHELL AND TUBE HEAT EXCHANGER TO STORE THERMAL ENERGY USING PCM
Project Abstract / Summary : DESIGN AND FABRICATION OF SHELL AND TUBE HEAT EXCHANGER FOR THERMAL ENERGY STORAGE
ABSTRACT
This project is mainly focusing on designing of a shell and tube heat exchanger(STHE). Heat exchanger is a device that is used to transfer thermal energy between two or more fluids, between a solid surface and a fluid at different temperatures and in thermal contact. The design of STHE includes thermal design and mechanical design. The thermal design of STHE involves evaluation of required effective surface area (i.e. number of tubes) and finding out log mean temperature difference [LMTD]. Whereas, the mechanical design includes the design of main shell under internal & external pressure, tube design, baffles design gasket etc. The principal components of an STHE are:shell,shell cover,tubes,tubesheet,baffles,and nozzles.Other components include tie-rods and spacers, pass partition plates, impingement plate, longitudinal baffle, sealing strips, supports, and foundation.
The design is to be done to store thermal energy incorporating phase change materials.The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage density and the isothermal nature of the storage process.The shell and tube latent heat storage(LHS) contains PCM which fills space outside the tube heat exchanger.The heat transfer fluid flowing through the tube exchanges thermal energy with PCM.The selection of suitable PCM is based on several factors.A primary criterion for an efficient,reliable storage unit is the correct melting point of the PCM at a desired operating temperature of the heating application.
A compatible software is to be used in designing and in simulation. To design this heat exchanger,many considerations will be taken. The shell size must be adaptable to the water flow rate.To determine how many tubes that are used also depends on the size of the shell. Water flow rate can be determined by using ball valve opening. The opening is decided to be 50%, 60%, 65%, 75% and 100%. To read the temperature, a thermometer digital is attached at inlet and outlet for both hot and cold fluid. The readings will be taken and take into calculation using the software that has been build. The manual calculation will be done to check the program in the software whether it is compatible. From the results obtained, the heat transfer rate rise up when the mass flow rate increased. Lastly, the most suitable and economical heat exchanger is decided. And to conclude, the simulation of heat exchanger in the software is compatible with the design as the result is same.
Keywords;STHE,LMTD,PCM,thermal energy storage,simulation.
Why did you choose to work on this project topic : Energy storage is a great problem in today's world and it's a much needed that a compatible device to be made to do so.so this project is just a small try to fulfill the need.Also the pcm thermal storage is not so popular and use of pcm can alter the dynamics of today's world.The above mentioned heat exchanger can be used for multipurpose i.e.,VARS SYSYTEM,SOLAR HEATING AND COOLING etc
Project Category : Mechanical / Automobile / Aeronautical
------------------------------------------------------
Institute/College Name: DR MGR EDUCATIONAL AND RESEARCH INSTITUTE UNIVERSITY
City: CHENNAI
State: TAMILNADU
Participating Team From: Final Year
ABSTRACT
This project is mainly focusing on designing of a shell and tube heat exchanger(STHE). Heat exchanger is a device that is used to transfer thermal energy between two or more fluids, between a solid surface and a fluid at different temperatures and in thermal contact. The design of STHE includes thermal design and mechanical design. The thermal design of STHE involves evaluation of required effective surface area (i.e. number of tubes) and finding out log mean temperature difference [LMTD]. Whereas, the mechanical design includes the design of main shell under internal & external pressure, tube design, baffles design gasket etc. The principal components of an STHE are:shell,shell cover,tubes,tubesheet,baffles,and nozzles.Other components include tie-rods and spacers, pass partition plates, impingement plate, longitudinal baffle, sealing strips, supports, and foundation.
The design is to be done to store thermal energy incorporating phase change materials.The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage density and the isothermal nature of the storage process.The shell and tube latent heat storage(LHS) contains PCM which fills space outside the tube heat exchanger.The heat transfer fluid flowing through the tube exchanges thermal energy with PCM.The selection of suitable PCM is based on several factors.A primary criterion for an efficient,reliable storage unit is the correct melting point of the PCM at a desired operating temperature of the heating application.
A compatible software is to be used in designing and in simulation. To design this heat exchanger,many considerations will be taken. The shell size must be adaptable to the water flow rate.To determine how many tubes that are used also depends on the size of the shell. Water flow rate can be determined by using ball valve opening. The opening is decided to be 50%, 60%, 65%, 75% and 100%. To read the temperature, a thermometer digital is attached at inlet and outlet for both hot and cold fluid. The readings will be taken and take into calculation using the software that has been build. The manual calculation will be done to check the program in the software whether it is compatible. From the results obtained, the heat transfer rate rise up when the mass flow rate increased. Lastly, the most suitable and economical heat exchanger is decided. And to conclude, the simulation of heat exchanger in the software is compatible with the design as the result is same.
Keywords;STHE,LMTD,PCM,thermal energy storage,simulation.
Why did you choose to work on this project topic : Energy storage is a great problem in today's world and it's a much needed that a compatible device to be made to do so.so this project is just a small try to fulfill the need.Also the pcm thermal storage is not so popular and use of pcm can alter the dynamics of today's world.The above mentioned heat exchanger can be used for multipurpose i.e.,VARS SYSYTEM,SOLAR HEATING AND COOLING etc
Project Category : Mechanical / Automobile / Aeronautical
------------------------------------------------------
Institute/College Name: DR MGR EDUCATIONAL AND RESEARCH INSTITUTE UNIVERSITY
City: CHENNAI
State: TAMILNADU
Participating Team From: Final Year
Replies
You are reading an archived discussion.
Related Posts
Project Abstract / Summary : As the conventional steering system i.e. two wheel steering system fails to meet the challenge of improving steering response and vehicle stability at certain speed....
Project Abstract / Summary : OUR PROJECT IS BASICALLY DEALS WITH THE OBJECTIVE OF HOW TO IMPROVE THE EFFECIENCY OF CONVENTIONAL SOLAR CELL UNDER THE POINT DIVERGENCE METHOD. SINCE CURRENT...
Project Abstract / Summary : The basic concept of this machine is to convert one form of motion to the other form of motion (here the conversion is from oscillatory...
Project Abstract / Summary : The project aims at monitoring the exhaust of a highway vehicle using sensors. Fuel economy and the time required for maintenance period is calculated, and...