Performance analysis of shell and tube heat exchanger. The shell side fluid flows on the outside of the tubes and is. Shell and tube heat exchanger a shell and tube heat exchanger is a class of heat exchanger. Types of heat exchangers shell and tube, plate type. Takes up much less space than a traditional shellandtube heat exchanger. The information presented here along with the books referenced here is. Shell and tube heat exchangers in their various construction modifications are probably the most widespread and commonly used basic heat exchanger configuration in industry. Enhancement of heat transfer through shell and tube exchangers stills taking high attention by. Constructal theory is a new method for optimal design in engineering applications. Overall heat transfer coefficient for shell and tube heat. Heat transfer theory tells us that the log mean temperature difference is the average temperature difference to use in heat exchanger design equation calculations.
Crossflow heat exchanger mixedunmixed example book problem 11. The heat transfer inside of process fluids is done by the convection mechanism, and in metallic surface, it is done by the conduction mechanism. Shell and tube heat exchangers are, simply put, a device that puts two working fluids in thermal contact using tubes housed within an outer cylindrical shell. Shell and tube heat exchanger 2 syscad documentation. The basic heat exchanger design equation can be used for a variety of types of heat exchangers, like double pipe heat exchangers or shell and tube heat exchangers.
Shellandtube heat exchanger britannica encyclopedia britannica. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. A heat exchanger is a device to transfer heat from one fluid liquidgas to another. A shell and tube heat exchanger is a class of heat exchanger. It utilizes a bundle of tubes through which one of the. In most cases the plate type is the most efficient heat exchanger. The metallic surface in a shell and tube and an aircooled heat exchanger is a tube wall, and in the plate heat exchanger, it is a thin wall plate, in which each process fluid is on a different side. Fundamental concepts of overall heat transfer coefficient ohtc in shell and tube type heat exchanges overall heat transfer coefficient ohtc is product of the three factors mainly. Shell and tube heat exchangers are one of the most popular types of. The heat exchanger consists of a shell side flowing medium and a tube side flowing medium.
Often, engineers prefer to use a heat exchanger design software. Shell and straight tube heat exchanger b6series heat exchangers are fabricated with the distinctive aic thintube, highdensity design. There are various types of heat exchangers used in process piping. The tube side media flows inside the tubes and is diverted by the heat exchanger head located on the end into two or four passes or circuits. Two fluids, of different starting temperatures, flow through the heat exchanger. Different types of shell and tube designs are possible. The theories of transient heat transfer in doublepipe heat exchangers were explained and followed by literature correlations. Plate heat exchanger theory phe structure and functional. A procedures manual was created for the doublepipe heat exchanger. This is due to the larger area the plates provide over tubes. The two most common kinds of heat exchanger are the shellandtube.
Indirect heat exchangers are available in several main types plate, shelland tube, spiral etc. You can then use this model to simulate the heat exchanger performance and to verify if it will meet your process requirements. Shell and tube heat exchanger syscad documentation. It is, in theory, a low cost floating head design which allows access to the inside of the. Shell and tube heat exchanger considers one of the most common types of. Shell and tube heat exchanger considers one of the most common types of exchangers widely used in the industrial processes. Heat transfer theory the natural laws of physics always allow the driving energy in a system to. Salt water pool heaters shell and straight tube heat exchanger mline heat exchangers are a line of completely welded heat exchangers made entirely of a super austenitic marine alloy. The theory behind heat transfer plate heat exchangers. Analysis study of shell and tube heat exchanger for clough.
These are calculated using a pressure vessel design code such as the boiler and pressure vessel code from asme american society of mechanical engineers and the british master pressure vessel standard, bs 5500. It is primarily used to transfer latent heat from a condensing vapour stream, currently only steam, to a. The shellandtube heat exchanger is probably the most common type found in industry. Heat exchangers types, theory and basics training youtube. With a plate type heat exchanger, the heat penetrates the surface, which separates the hot medium from the cold one very.
Due to the high heat transfer efficiency of the plates, plate type heat exchangers are usually very small when compared to a tube and shell type heat exchanger with the same heat transfer capacity. There are several different types of heat exchangers which include doublepipe exchangers, shell and tube exchangers, air coolers and many more. Figure 1 illustrates a typical unit that may be found in a petrochemical plant. Intended for use with high fluid flows and close approach temperatures.
It is the most common type of heat exchanger in oil refineries and other large chemical processes, and is suited for higherpressure applications. Other articles where shellandtube heat exchanger is discussed. The shellandtube heat exchanger is composed of a shell containing a large number of tubes. It is widely used in the process industries as well as in many types of hvac equipment. Often, engineers prefer to use a heat exchanger design software to create a heat exchanger model.
All about shell and tube heat exchangers what you need to know. A heat exchanger follows this principle in its endeavour to reach equalisation. The basic component of a heat exchanger can be viewed as a tube with one fluid running. Alfa laval heat exchangers 3 thin material for the heat transfer surface. The the most fundamental variable in heat exchanger tubes. Economic optimization of shell and tube heat exchanger based on.
Definition a heat exchanger is a device used to transfer heat between one or more fluids. This exchanger consists of a vessel with different sizes contains a number of. It utilizes a bundle of tubes through which one of the fluids flows. Heat exchanger theory and the heat exchanger design. As its name implies, this type of heat exchanger consists of a shell a large pressure vessel with a bundle of tubes inside it. The mechanical design of a shell and tube heat exchanger provides information on items such as shell thickness, flange thickness, etc. Request information for shellandtube heat exchanger. All heat exchangers do the same jobpassing heat from one fluid to anotherbut they work in many different ways. The purpose of this paper is optimization of shell and tube heat exchangers by. The shell and tube heat exchanger 2 is used to transfer energy from one stream to another. Heat exchanger design to choose a suitable heat exchanger for a certain application requires a level of knowledge and experience. The most fundamental variable in heat exchanger tubes can have any.
Unit operations lab heat exchanger 11 heat exchanger heat exchange is an important unit operation that contributes to efficiency and safety of many processes. Shell and tube heat exchanger due to the the difference of fluid temperature inside and outside, so the heat exchanger shell and tube bundles temperature is also different. Heat exchangers fabrication design consulting aic mline. Where, 80% of the energy utilization systems uses heat. As its name implies, this type of heat exchanger consists of a shell a large vessel with a bundle of tubes inside it. All these heat exchangers can be operated in both parallel and. A shell and tube heat exchanger is a class of heat exchanger designs. E1mnl032a design and rating of shell and tube heat. The two flowing mediums are not in direct contact with each, other but are close enough that. Due to the high heat transfer efficiency of the plates, plate type heat. Shell and tube heat exchangers page 4 of 30 mnl 032a issued 29 august 08, prepared by j. A shell and tube exchanger consists of a number of tubes mounted inside a cylindrical shell.
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