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DESIGN AND BUILDING OF A SMALL SHELL AND TUBE HEAT EXCHANGER USING ALGORITHM
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This research work is on Design and building of a small shell and tube heat exchanger using algorithm. A heat exchanger is a device which is used to transfer thermal energy between two or more fluid. This project is mainly focusing on designing one type of a heat exchanger which is shell and tube heat exchanger. In this project a fixed tube plate type shell and tube heat exchangers was chosen, exchanger of 150000 lb per hour of kerosene that will be heated from 75 to 120°F by cooling a gasoline stream from 160 to 120°F at a calculated heat load of 3240000. The specification of the Heat exchanger as well as the detailed mechanical design was calculated. It is established that the heat exchanger with gasoline at the shell side and kerosene at the tube side is adequate for the operation. The available area obtained from the calculation is 2105ft2 and also the overall heat transfer coefficient obtained is Btu h -1 ft -2 °F-1 with a LMTD of 42.75°F. It is also seen that the heat exchanger is satisfactory and consist of 6 tube passes with tube outside diameter of 14 (BWG) and length of 24mm,the shell outside diameter of 803.4mm and thickness of 3.72mm. The material for construction for the shell side is carbon steel.
This research work is on Design and building of a small shell and tube heat exchanger using algorithm. A heat exchanger is a piece of equipment built for efficient heat transfer from one fluid to another. Just like a radiator in a car engine, as the car runs, a coolant stored in the radiator circulates through the engine blocks where it picks up heat and then returns back to the radiator, a fan draws air across the radiator where the heat is transferred to the air. Heat has been transferred from the hot engine to the coolant and from the coolant into the air again. This is an example of a heat exchanger.
The most commonly used heat exchanger is the shell and tube heat exchanger. In a shell and tube heat exchanger, one of the fluids usually passes next to the other fluid through a series of pipes or tubes, the two fluids never come in contact with each other, heat transfer through the walls from the hotter fluid to the cooler fluid. Shell and tube heat exchangers are used extensively in engineering applications like power generators, refrigeration and air conditioning, petrochemical industries etc. These heat exchangers can be designed for almost any capacity.
The main purpose in the heat exchanger design is given task for heat transfer measurement to govern the overall cost of the heat exchanger. Heat exchangers are important in the oil and gas sector to increase process efficiency, to reduce maintenance, conserve energy and for employee safety. We commonly use the term heat exchanger to describe different types of equipment used in heat transfer, these heat transfer equipment include; cooler, condenser, vaporizer, reboiler and chiller. The steadily increasing use of shell-and-tube heat exchangers and greater demands on accuracy of performance prediction for a growing variety of process conditions resulted in the explosion of research activities. These included not only shell side flow but also, equally important, calculations of true mean temperature difference and strength calculations of construction elements, in particular tube sheets.
- SCOPE OF THE PROJECT
The scope of the project is to make a design for a shell and tube heat exchanger and a paper work for construction. The design covers the selection and sizing methods for a shell and tube heat exchanger which will be based on the Tabular Exchanger manufacturers association (TEMA) standards. It also covers the manual calculations for the log mean temperature difference method, the number of transfer units method and also calculation of heat transfer co-efficient.
The objectives of this project are:
- To formulate a design algorithm for a shell and tube heat exchanger
- To obtained the best specifications of heat exchangers.
- To design and build a small shell and tube heat exchanger
- To optimize procedure for a shell and tube heat exchanger
- Store Name: Brilliantng
- Vendor: Brilliantng
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