Shell and tube heat exchangers were the focal point of this experiment, and were examined to evaluate the properties of pressure drop and heat transfer. In selecting a location for the heat exchanger, provide sufficient clearance at the head end of the exchanger to permit removal of the tube bundle from the shell. Performance analysis of shell and tube heat exchanger. Heat shielding andor guard rails for personnel protection may be. Usman ur rehmanperformed a cfd analysis of shell and tube heat.
Shell and tube type heat exchanger, indirect contact type heat exchanger. Process fluid assignments to shell side or tube side. Inspection procedure for shell and tube heat exchangers. The usual configuration of exchangers is for the hp fluid to be in the tubes and for lp water, cooling or heating media to be on the shell. Professor bengt andersson the work is done with the colaboration of tetrapak processing systems lund, sweden. The schematic of a shell and tube heat exchanger 6 shell and tube heat exchangers contain a large number of tubes sometimes several hundred packed in a shell with their axes parallel to that of the shell. So it must be multiplied by the ao value for using in the overall heat transfer equation.
Note, this overall heat transfer coefficient is calculated based on the outer tube surface area ao. We offer a comprehensive catalog of shell and tube heat exchangers, tube in tube heat exchangers and pointofuse pou sampling systems constructed of 316l ss, hastelloy, inconel, titanium and other alloys. We already saw that the design of a shell and tube heat exchanger is an iterative process. Standard designs and manufactures heat exchanger products for the chemical, pulp and paper, biofuels, sugar processing, petroleum, power generation, mining and general industrial markets. Heat is transferred to or from process streams using other process streams or heat transfer media.
The experimental and numerical result shows good agreement 5. Heat transfer mechanism shell and tube heat exchangers are typically used for high pressure applications with pressures greater than 30 bar and temperatures greater than b. They split all heat exchanger designs into three main parts. Tube side pressure drop data for a single 14 heat exchanger was collected for flow rates between 1665. Selection of heat exchanger tema layout and number of passes. Misaligned flanges can induce extraneous stresses in the vessel walls and are subject to leakage as well. This plan has been done using kerns method in order to gain various dimensions such as shell, tubes, baffles etc. In this example, two fluids pass through the heat exchanger. A shell and tube heat exchanger is one of the most popular types of exchangers due to its flexibility. Here is an example of a 12 1 shell pass and 2 tube passes heat exchanger. Shell and tube design and rating tube vibration analysis air cooler design and rating others plate and frame, platefin, spiral plate, hairpin, jacketed pipe, and fired heater, etc. Pdf the scope of this work was to design a shell and tube heat exchanger to meet the specifications provided in the problem statement. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarized as follows. Shell and tube heat exchangers basic calculations pdh online.
Design and development of shell and tube heat exchanger for harar brewery company. Cast iron parts usually fracture because of lack of. In this type, there are two fluids with different temperatures, one of them flow through tubes and another flowthrough shell. Shell and tube heat exchangers page 4 of 30 mnl 032a issued 29 august 08, prepared by j. There should also be adequate floor space in front and behind to permit the removal of heads, replacement of tubes, and removal of the tube bundle if so equipped. Most shell and tube heat exchangers have multiple passes to enhance the heat transfer.
The tubes may be rolled into grooves in the tubesheet, welded to the tubesheet, or both to ensure against leakage. It is the most common type of heat exchanger in oil refineries and other large chemical processes, and is suited for higherpressure applications. Shell and tube heat exchanger, cfd computational fluid dynamics, heat transfer characteristics, effectiveness 1. As its name implies, this type of heat exchanger consists of a shell a large vessel with a bundle of tubes inside it. The heat transfer performance of a heat exchanger is the product of. The fluid temperature inside the shell and tube are different and this temperature difference is the driving force for temperature exchange. Tech thesis on shell and tube heat exchanger design using. Heat transfer optimization of shell and tube heat exchanger through cfd studies usman ur rehman c usman ur rehman, 2011 masters thesis 2011.
Setting shell side and tube side pressure drop design limits. Shell and tube heat exchanger, elliptical tubes, heat transfer, pressure drop background heat exchanger is a universal device in many industrial. Shell and tube heat exchanger cleaning methods just like in any industry, there is the hard way and the smart way of getting the job done. Shell and tube evaporators and condensers from servicefirst. The scope of this work was to design a shell and tube heat exchanger to meet the specifications provided in the problem statement. The oil provides an average convection coefficient ho 400 wm2k on the outside of the tubes. Preliminary designanalysis use heat transfer and pressure drop correlations preliminary design. In shell and tube heat exchangers there is a potential for a tube to rupture and for high pressure hp fluid to enter and overpressurise the low pressure lp side of the heat exchanger.
Design and cfd analysis of shell and tube heat exchanger. Continued heating causes thermal expansion, which creates pressures far in excess of the strength of tube sheets, cast heads, and other heat exchanger components. Specification of tube parameters size, layout, pitch. Selection of heat transfer models and fouling coefficients for shell side and tube side. Design and development of shell and tube heat exchanger. It consists of a series of tubes, through which one of the fluids runs. With sizes ranging from 3 to 144 in diameter, and 12 to 40 in length, our api basco division is a full service manufacturer. 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.
Introduction a heat exchanger transfers energy from one fluid to another across a solid surface by convection and conduction. Review of literature on heat transfer enhancement in heat. Selection of heat exchanger tema layout and number of. Today, the company is devoted exclusively to the design, engineering and manufacture of. Heat exchangers are used in power plants, nuclear reactors. A shell and tube heat exchanger is a class of heat exchanger designs. Pdf fouling is a function of the system and the equipment used. In certain circumstances this flow arrangement can be reversed, but please consult us first. Inspection procedure for shell and tube heat exchangers printed. The whole computation domain is bounded by the inner side of the shell and everything in the shell contained in the domain. The mechanical design of a shell and tube heat exchanger provides information on items such as shell thickness, flange thickness, etc. From simple shell and tube heat exchangers, to sophisticated, precisionengineered custom heat exchangers, compact brazed plate or gasketed plate and frame units, packaged steam condensers to aircooled. Cpe533 shell and tube heat exchanger full lab report free download as word doc.
Design and development of shell and tube heat exchanger for. The greater the temperature difference, the smaller will be the required heat transfer surface. The heat exchanger in consideration is the shell and tube heat exchanger. Shell and tube heat exchanger, elliptical tubes, heat transfer, pressure drop background heat exchanger is a universal device in many industrial applications and energy conversion systems. Sep 01, 2018 abd and naji studied design of shell and tube heat exchanger in details and tested the effect of shell diameter on overall heat transfer coefficient by using different bundle diameters. Heat exchangers jordan university of science and technology. Cpe533 shell and tube heat exchanger full lab report. Cfd analysis of shell and tube heat exchanger for heat. The dxtdxcs are designed for optimum heat transfer rates and features rolledin tubes and removable heads. In the case of straight tubes with fixed tube sheets, allow room to remove the heads for inspection and cleaning tubes, if and when it should become necessary.
Global shelltube heat exchanger market sales value and. Apr 01, 2021 types of shell and tube heat exchangers. A shell and tube heat exchanger of gasliquid chemical reactor system has been used in the experimental method. From different types of heat exchangers the shell and tube heat. All about shell and tube heat exchangers what you need to know. The selected type of shell and tube heat exchanger is a one shell, two pass heat exchanger. Shell and tube heat exchanger a shell and tube heat exchanger is a class of heat exchanger.
Heat is transferred from one fluid to another through the tube walls, either. Cooling water is selected to flow through the shell while liquid propylene is chosen to flow through the tubes. The shell side usually contains theprocess fluid and the tube side water f. When possible, utubes are used, requiring only one. Traditional methods of tube cleaning such as rodding and hydroblasting are expensive, time consuming and often lead to equipment downtime. They can be used for wide temperature and pressure range. All about shell and tube heat exchangers what you need. Numerical and heat transfer analysis of shell and tube heat. However, the lower cost for the single tubesheet is offset by the additional costs incurred for the bending of the tubes and the somewhat larger shell diameter due to the minimum ubend radius, making the cost of a u tube heat exchanger comparable to that of a. Pdf design of a shell and 2tube heat exchanger tasmiyah. It is the most common type of heat exchanger in oil refineries and other large chemical processes. Exergys extensive engineering expertise, unique designs and manufacturing techniques allow us to provide the most compact heat exchangers.
The heat exchanger discussed in this manual has been carefully assembled and factory tested to provide years of troublefree service. The correction factor is used in conjunction with the lmtd to. As its name implies, this type of heat exchanger consists of a shell a large pressure vessel with a bundle of tubes inside it. In this model, two separated fluids at different temperatures flow through the heat exchanger, one through the tubes tube side and the other through the shell around the tubes shell side. A shell and tube heat exchanger is a class of heat exchanger. Heat transfer optimization of shellandtube heat exchanger. Group 5 equipment code l1 l2 l3 l4 l5 l6 l7 l8 l9 equipment name tray drier concentric tube heat exchanger shell and tube. An unbaffled shellandtube heat exchanger design with respect to heat transfer coefficient and pressure drop is investigated by numerically modeling. For example, in a shell and tube exchanger, the pipe diameter and length are used for this purpose. Process eng design eng shell and head types, baffles, tube passes, etc. Shinde and chavan concluded that baffle spacing, and pitch type can play a vital role in enhancing heat transfer into exchangers 4. Effectively design shellandtube heat exchangers torr. Shell and tube heat exchangers bowman pdf catalogs.
For a given value of heat duty, a shell and tube heat exchanger. The greater the temperature difference, the smaller will be the required heat. Also check for tube od wear where the pass through baffles. A typical heat exchanger, usually for higher pressure applications up to 552 bars, is the shell and tube heat exchanger. Shell and tube heat exchanger is a device where two working fluids exchange heats by thermal contact using tubes housed within a cylindrical shell. A computer model using catia v5 has been built up by using the derived dimensions of heat exchanger. The standard types of shell and tube heat exchangers are regulated by the tubular exchangers manufacturers association or tema. Cpe533 shell and tube heat exchanger full lab report heat. Pdhonline course m371 2 pdh shell and tube heat exchangers. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact1. Numerical and heat transfer analysis of shell and tube.
Model definitionthe concept used to design a shell and tube heat exchanger is examined by exploring the working model of a straight, crossflow, one pass shell and tube heat exchanger. The simulated shell and tube heat exchanger has 4 baffles with 25% cut in the shell side direction with total number of tubes 22. Shell and tube heat exchangers are commonly used in oil refineries and other large chemical processes. The fouling of heat exchanger and other piping or vessel surfaces. As you can see, in a 12 heat exchanger, the tube side fluid flows the entire length of the shell. Specifying shell and tube heat exchangers understand what heat exchanger design specialists need to know and remember, you know your process best asif raza shell and tube heat exchangers are one of the most important and commonly used process equipment items in the chemical process industries cpi. Design of shell and tube heat exchanger epcm holdings. Components of the shell and tube heat exchanger 1 heat exchanger shell 2 connection chamber 3 guide chamber 4 internal tubes 5 tubesheets 6 baffles 7 apparatus seal however, an effective heat exchange can only take place if the temperature difference is sufficient. Verify proper location of impingement plate and for tube od erosion in the vicinity of inlet nozzles. As you can see, in a 12 heat exchanger, the tube side fluid flows the entire length of the shell, turns around and flows all the way back. Combining our human talent with our stateoftheart manufacturing facility, our applications expertise. Since it is suggested that the more fouling fluid flows through the.
E1mnl032a design and rating of shell and tube heat. Shell circuits are engineered to provide high performance with a lowpressure drop to conserve the required pumping power. A shell and tube heat exchanger must be designed to heat 2. Shellandtube heat exchangers funke warmeaustauscher. A followup arti cle on advanced topics in shellandtube heat exchanger design, such as allocation of shellside and tubeside fluids, use of multiple shells.
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