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Heat exchanger design project - Coursework Example

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Heat Exchanger Design Project Heat Exchanger Design Name: Institution: 1 Objective The objective of the project is to come up with an elaborate design of a heat exchanger. This shall incorporate all the conditions at hand so as to have the heat within the system being within the constraints that are bearable for comfortable operation…
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Heat exchanger design project
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Heat exchanger design project

Download file to see previous pages... The Flowrate of the system is to be designed to be 10,560 kg/hr The design also aims at getting the heat exchanger using hot Ethylene glycol which at the inlet shall be at a temperature of 350 K. At the outlet, the design is to have the hot ethylene at the temperature of 310K. At the same time, the design Pressure at the inlet is to be 2 atm. 2 Background Shell and Tube Heat Exchangers A shell and tube Heat Exchanger works with the principle that a series of parallel tubes run through a shell that is filled with a fluid that takes the heat from the series of parallel tubes. The tubes transfer heat into the fluid primarily through conduction and convection. It is a very effective heat exchange system where the heat is ejected from the pipes with a lot of ease. This mechanism of heat exchange is the most commonly used in industries as opposed to the numerous other mechanisms that are available. The walls of the tubes are key in the transfer of the heat from the parallel tubes to the coolant running in the shell. S & T Heat Exchanger Design Standards The Shell & Tube Heat Exchanger types are typically designed such that they are in such a wide range of shapes and sizes. The sizes usually range from 6 inch all the way to a whopping 40 inch just in their diameter. On the other hand, their usual length normally varies from just a meager 3 feet all the way to a whopping 40 feet over and above the heads of the tube. Also as per the designs of the Heat Exchangers, their usual design pressure which they can accommodate is upto a pressure of 20 Kg for every sq.cm gauge. This is on the tube side walls and shell side walls. The design of the Heat Exchangers follows the fabrication standard of ASME / TEMA unfired vessels pressure codes and ASHRAE requirements standards. The climate of the area under consideration changes seasonally and rivet holes should have a broad tolerance accordance to the four seasons of the world. It has extreme end points whose temperatures go beyond the melting point of water. Under changing environmental temperature conditions, materials tend to expand and contract. In this regard, the heat exchanger system has to be designed in way that considers the expansion and contraction of materials. The system has to be made with more flexible tolerances and fits to allow for the expansion and contraction of the materials (I). The best method for the joining of the parts of the system should be one which allows for the expansion and contraction of materials. In this regard, permanent material joining methods like welding are inappropriate. The use of rivets is recommended. The rivets should be such that they allow the joined materials room to expand and contract relative to one another. To achieve this, the rivets and the rivet holes should be designed with a great tolerance fit. The system should also be designed in a way that permits regular repairs and maintenance. It should not be rigidly enclosed. More or less all systems tend to break down at some point in the course of their work time. This calls for an entry point to check up the internal portions of the system. In this regard, it is in appropriate to design a system which is permanently enclosed within a system. Entry points can be made from several wide ranges of mechanisms. The design incorporates all the conditions at hand so as to have the heat within the system are within the constraints that are bearable for ...Download file to see next pagesRead More
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