Unlike other tools, ensures that the calculations are performed step by step to help in understanding the design calculations. Shell and tube heat exchanger calculations can be done at. The thermal design of heat exchangers is directed to calculate. Solving a traditional shell and tube heat exchanger problem. Heat transfer theory tells us that the log mean temperature difference is the average temperature difference to use in heat exchanger design equation calculations. Plate heat exchanger, how it works working principle hvac industrial engineering phx heat transfer duration. For the shellandtube heat exchangers of type bcf horizontal installation there is an ec type approval test pursuant to module b of pressure equipment directive 97 23 ec according to which these types can be supplied with ce marking. Both types are fullywelded and can be utilized in a variety of applications. Setting upper and lower design limits on tube length. Calculation of the total number of tubes required and the tubeside velocity. Request information for shellandtube heat exchanger. Often described as the workhorse of the industrial process industry, the shell and tube heat exchanger is an immensely versatile unit, able to handle a wide range of process applications and conditions.
The shell side typically holds the process fluid, and the tube side. Shell and tube heat exchanger design software for thermal. St series are 316l stainless steel shell and tube heat exchangers. The log mean temperature difference to the shell and tube are computed using equations 6. Design and development of shell and tube heat exchanger.
Digitalflo steamtowater, shell and tube, water heater. Top 4 download periodically updates software information of shell and tube heat exchanger design 3. The rating problem is concerned with the determination of the heat transfer rate, fluid outlet temperature, inlet temperature, heat transfer area and the sizing problem involves determination of the dimension of the heat exchanger. Calculate the required heat transfer area based on values needed. This device has straight tubes that are secured at both ends to tube sheets welded to the shell. Employment of the developers services in project or process engineering are available on a contract or direct basis, either domestically or internationally. This engineering calculator will determine a number of variables for the most common arrangements or flow paths within heat exchangers. Shellandtube heat exchangers are commonly used in oil refineries and other large chemical processes.
The calculation and design of funke heat exchangers is effected with worldwide leading programs e. Other national or international design regulations e. Definition a heat exchanger is a device used to transfer heat between one or more fluids. Shell and tube heat exchanger design security and download notice download. The mechanical design of a shell and tube heat exchanger provides information on items such as shell thickness, flange thickness, etc. The shellandtube heat exchanger is modeled using the belldelaware method for the shellside heat transfer coefficient and pressure drop. A 12 shellandtube heat exchanger is illustrated in figure 5.
Inspect the heat exchanger frequently while it is in storage. The correction factor is used in conjunction with the lmtd to. The principal advantage of the fixed tube sheet construction is its low cost because of its simple construction. It is the most common type of heat exchanger in oil refineries and other large chemical processes.
As shown in figure 47, the shell and tube heat exchanger consists of the shell, which is a large vessel with one or more inlet and one or more outlet nozzles. Designing steps for a heat exchanger ijert journal. Specification of tube parameters size, layout, pitch. Heat exchanger theory and the heat exchanger design. Whether you are looking to cool, heat, vaporise or condense, the shell and tube can meet your needs. 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. Shell and tube heat exchangers basic calculations a. Basically, a heat exchanger does the function of either cooling or heating a fluid depending on the requirement.
The following steps are adopted for the calculation of parameters of shell and tube heat exchanger 1. Calculation and checking of heat load for utube design procedures of heat load check with calculation of heat transfer coefficient of shell and tube side are as shown in fig. Your phone number select algeria angola armenia benin botswana burkina faso burundi cameroon cape verde central african republic chad congo congo, democratic. However, the developer accepts no responsibility for the accuracy, use of or calculation results derived from herein. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shell side. Technical catalogue section 5 shell and tube models. These heat transfer devices are engineered to meet to a wide variety of applications. Products shell and tube heat exchangers heat transfer. Heat exchangers analysis and heat translate calculations are provided. Effectively design shellandtube heat exchangers torr. Heat exchangers jordan university of science and technology. The main steps of design following the kern method are summarized as follows. Pdf shell and tube heat exchanger performance researchgate.
Calculation of shell side heat transfer coefficient. Therein, popular analytical techniques such as log mean temperature difference lmtd and effectivenessnumber of. Shell and tube heat exchanger types yes yen graphitech. Lewin heat exchanger design shellandtube heat exchangers these movies demonstrate the flow of process fluids in a typical shellandtube heat exchanger setup.
Shellandtube heat exchangers funke warmeaustauscher. I am new to this website, i wanted to share a few spreadsheets, dont know whether this where i should share the file or not. Pdf design of shell and tube heat exchanger single phase. The design of shell and tube heat exchanger using kern method for water and steam combination is validated by wellknown dittusboelter equation of turbulent flow inside tube. Tubeside calculations are quite straightforward, since tubeside flow. How to calculate the efficiency of a shell and tube heat. Heat exchangers software latest available products. In fact, the fixed tube sheet is the least expensive construction. Singlewall, heat exchanger doublewall, heat exchanger component material heat exchanger shell carbon steel, astm sa106, gr. The conventional and prevalent methods such as kern method are presented. Heat shielding andor guard rails for personnel protection may be.
Shell and tube heat exchanger design linkedin slideshare. If your applications require straight or utube designs we provide fast, professional service. The combined effect of all these correction factors for a welldesigned shellandtube heat exchanger is of the order of 0. 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. Design and development of shell and tube heat exchanger for beverage article pdf available in modern mechanical engineering 45. As its name implies, this type of heat exchanger consists of a shell a large vessel with a bundle of tubes inside it. Coefficient is also calculated by above reynold number equation 7. They are widely used in space heating, refrigeration, air conditioning, power stations. Selection of heat exchanger tema layout and number of passes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. Diagram of a shell and tube counterflow heat exchanger shell tube fluid in shell fluid in tube it is important to note fluid flow in the tube occurs in the opposite direction of the fluid flow in the shell. The shellandtube heat exchanger type is among the most popular heat exchangers used in the industry the shellandtube heat exchanger gets its name from the two major components. Selection of heat transfer models and fouling coefficients for shell side and tube side.
Pdf design of shell and tube heat exchanger single. Lewin heat exchanger design shellandtube heat exchangers heuristic 55. Inside the shell, baffles are typically installed which help in holding the tubes and directing the shell fluid flow to some extent. Shell and tube heat exchanger temperature calculations.
A shell and tube heat exchanger is a class of heat exchanger. Khalil and others published shell and tube heat exchanger. Theory and application two fluids, of different starting. B, asme u stamped with 316 ss twopass head heat exchanger tube bundle 58in od x 16 bwg wall, admiralty brass heat exchanger tube sheets leadfree brass heat exchanger tube bundle end cap leadfree brass. Specification of tube parameters size, layout, pitch and material. The most common problems in heat exchanger design are rating and sizing.
Air cooled heat exchanger design allows to size air cooled heat exchangers with the ability to do thermal design calculations for horizontal induced draft and forced draft operation modes. Shell and tube heat exchangers can be used to give the main guidelines to choose the correct heat exchanger type under the tema or asme code, mandatory requirements, specific prohibitions, nonmandatory guidance, construction activities, calculations and technical formulae. Calculation of shellside heat transfer coefficient. They will also calculate the number of tubes needed for a shell and tube heat exchanger and to calculate the pipe length needed for a double pipe heat exchanger. On the tubeside, the heat transfer coefficient and pressure drop are determined from empirical correlations. 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.
The optimum thermal design of a shell and tube heat exchanger involves the. Determine heat transfer rate, outlet fluid temperatures and pressure drops on each fluid side for a tema e shellandtube heat exchanger with a fixed tubesheet and one shell and two tube passes. Specifying shellandtube heat exchangers understand what heat exchanger design specialists need to know and remember, you know your process best asif raza shellandtube heat exchangers are one of the most important and commonly used process equipment items in the chemical process industries cpi. The locations of the nozzles and the orientation of the.
Shell and tube heat exchanger consist of bundle of round tubes mounted in cylindrical shell with tubes parallel to shell. Reassembly tube stack the tube stack should be inserted into the body with the arrow on the face of the tube plate aligned with the arrow on the end of the body. Shell and tube heat exchanger is designed by trial and error calculations. The system being modeled is a simple shell and tube heat exchanger figure 1. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shellside. For example, in a shell and tube exchanger, the pipe diameter and length are used for this purpose. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. This software has step by step thermal analysis and calculations for the design of shell and tube heat exchangers. Shell and tube heat exchangers basic calculations pdh online. Installation location the heat exchanger should be located in a clean, open area, with sufficient clearance at the head of.
Setting shell side and tube side pressure drop design limits. Efforts have been made to confirm the accurracy of all calculations. Design spreadsheet for shell and tube heat exchanger and. The basic design equation and overall heat transfer coefficient the basic heat exchanger equations applicable to shell and tube exchangers were developed in chapter 1. 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. The outlet temperatures of shell and tube heat exchanger are computed by equations 4 and 5 2. Pdf shell and tube heat exchanger the heat transfer area. This paper deals with the design calculation of utube heat exchanger precisely 12 shell and tube heat exchanger with utubes. Shellandtube heat exchangers can have multiple passes, such as 11, 12, 14, 16, and 18 exchangers, where the first number denotes the number of the shells and the second number denotes the number of passes. The tubes in the bundle are in 45 rotated square arrangement.
47 1145 196 1354 748 591 1645 578 1198 77 269 694 927 991 1511 698 735 450 1181 825 209 1494 353 548 1428 11 1187 1566 1031 1375 18 335 1242 1074 641 86 45 1011 1016 1183 526 35 1426 1004 69 1271