Double pipe heat exchanger animation heat exchanger animation double pipe heat. Design procedure for a heat exchanger on the aspenplus software no phase change author. The total heat transfer area to be provided is around 6. Hemmat of mechanical engineering, shahid bahonar university of kernlan, iran abstract the single phase flow and thermal performance of a double pipe heat exchanger are examined by experimental methods. A double pipe heat exchanger consists of one pipe inside another. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. In hysys there is a limited online help package, which can be obtained using the help command from the menu bar or by pressing the f1 key. Double pipe heat exchanger introduction this application models the temperature dynamics of a countercurrent double pipe heat exchanger. It was designed for a counterflow arrangement and the logarithmic mean temperature difference lmtd.
Made by faculty at lafayette college and produced by the university of colorado. Double pipe heat exchanger consists of two concentric pipes as shown in figure 5. It can be used standalone by the thermal specialist for exchanger design or as an integrated product with unisim design for process. Then, either doubleclick on the plot title or legend to access the respective tab of the graph control property view. The calculation of the heat transfer coefficients is explained with examples. I just need a simple model, that is to said a tube inside the other. A procedures manual was created for the double pipe heat exchanger. Double pipe heat exchanger design consists of one pipe placed inside another pipe of a larger diameter with appropriate fittings to guide the flow from section to another.
Distributor of double pipe or double wall heat exchangers. Explains the detailed heat exchanger method in aspen plus. The manual also includes tips and recommendations for the design process. In parallel flow, both the hot and cold fluids enter the heat exchanger at the same end and move in the same direction, as shown in figure 1.
Good practice for heat exchanger selection and design. A device whose purpose is the transfer of thermal energy between two fluids. In hysys, you can choose the heat exchanger model for your analysis. Hi, i need to simulate a double pipe hx with hysys. For lightly higher heat duties, helical coil heat exchanger is used. Two exchangers in series can be modeled in one shell. Heat exchanger, two process streams, shell and tube geometry, same as cooler for first process stream. In the first three sections, saturated steam is supplied to the outer tubes in order to heat the oil. We have to design a double pipe heat exchanger as per the same operating conditions of plate heat exchanger and the above mentioned fluid properties. The heat exchanger must fulfil process requirements after fouling. Good practice for heat exchanger selection and design page 4 of 12 use one tube pass per shell pure counter current.
Is there a database or recommendations for the fouling factors. Design procedure for a heat exchanger on the aspenplus software. Temperature profiles in a counterflow and b parallel flow single pass heat exchangers. Is it possible to select a tema configuration in order to make a paralelism. I tried with the shell and tube hx but this is not what i have to simulate.
Access the full heat exchanger research library from htfs. Three partial differential equations describe heat balances across the tube and shellside liquids, and a heat balance across the tubewall taking into account the heat flow from the shell and. Sep 14, 20 this video demonstrates how to use aspen plus v8. Sec series model drawings and data sheets view download plplt series modelsview download. We would like to show you a description here but the site wont allow us. The unisim shelltube exchanger modeler can perform heat transfer and pressure drop calculations on single or twophase streams, involving sensible heating or cooling, boiling or condensation, or any of their combination, for. If possible, the heat exchanger should be designed to be selfcleaning, in other words so that the growth rate of fouling layer will slow down and eventually stop at a certain level. A typical double pipe heat exchanger basically consists of a tube or pipe fixed concentrically inside a larger pipe or tube.
And split your exchanger in two equivalent parts upper and lower exchanger. The tutorials you choose to work through will likely depend on the simulation topic that is. The resulting energy is used to heat pressurized water, which is in turn heat exchanged with cold water from a district heating network operated by viken fjernvarme as. Dynamic model and control of heat exchanger networks 6 1 introduction at the brobekk incineration plant in oslo waste from the surrounding area is burned in two furnaces. Double pipe heat exchangers often also referred to as double pipes are characterized by a construction form which imparts a ushaped appearance to the heat exchanger. Double pipe heat exchanger chemical process simulation. Introducing an intermediate pipe to a double concentric pipe heat exchanger. The designs include shell and tubes and plate heat exchanger. Each tutorial guides you stepbystep through the complete construction of a hysys simulation. Heat exchanger equipment field manual common operating. As explained in the user guide and simulation basis manuals, hysys has been uniquely. A procedures manual was created for the doublepipe heat exchanger.
Access the url below and click on the websimulator icon. A concentric tube or double pipe heat exchanger is one that is composed of two circular tubes. The optimum condition for the heat exchanger were found to be plate heat exchanger with 0. You can enter the shell pitch for doublepipe utube exchangers or. Jul 10, 2015 plate heat exchanger, how it works working principle hvac industrial engineering phx heat transfer duration. Double pipe heat exchanger design with counterflow or. Paper open access related content design and simulation of. Double pipe heat exchanger two sets of concentric pipes, two connecting tees, and a return head and a return bend.
Double pipe heat exchanger posted in chemical process simulation. Recognize the differences between the two methods available for. The heat exchanger was designed in order to produce various drying temperatures of 40, 50, 60 and 70. 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 contact. Double pipe heat exchangers are generally used for smallcapacity applications less than 50 m 2 of total heat transfer surface. The most widely used double pipe heat exchanger is the hair pin. This heat exchanger is also suitable where one of both fluids is at very high pressure. This way, you will have two heat exchangers in hysys flowsheet representing your application. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a. Therefore, all of the commercial simulators include models for heaters, coolers, heat exchangers, fired heaters,and air coolers towler and sinnott, 20. Fully incorporate heat exchanger designs within aspen hysys and aspen plus to produce the most optimal designs at the right economics. In its classical sense, the term double pipe refers to a heat exchanger consisting of a pipe within a pipe, usually of a straightleg. Figure 5 illustrates the spiral exchanger configuration. Fshell tema exchanger with two tube passes and countercurrent flow pattern.
Unisim shelltube exchanger modeler is a member of the honeywell unisim design suite. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural. Kays and london, 1984, to find the correction factor. Double pipe heat exchanger this project work is based on design and thermal analysis of double pipe heat exchanger. The theories of transient heat transfer in double pipe heat exchangers were explained and followed by literature correlations. The double pipe exchanger is used when one liquid has a greater resistance to heat flow than another r when the surface area is small.
An aspen hysys certified user demonstrates skills in building process simulations. Double pipe heat exchangers are the simplest exchangers used in industries. These factors are then used in combination with a suited nomogram. Eshell tema exchanger with single tube pass and countercurrent flow pattern. Double pipe heat exchangers are used for low product streams and low heat duties. Optimum design of double pipe heat exchanger sciencedirect.
Double pipe exchanger hysys tutorials carol romine. Hysys tutorials a1 a1 a hysys tutorials the tutorials section of this manual presents you with independent tutorial sessions. Two types of flow arrangement are possible in a double pipe heat exchanger. Then, either doubleclick on the plot title or legend to. The simplest type of heat exchanger consists of two concentric pipes of different diameters, as shown in fig. It is referred to as a laminar flow heat exchanger if the surface area density is above about 3000 m2m 3 914 ft2ft3, and as a micro heat exchanger if the surface area density is above about 10,000 m2m 3 3050 ft2ft3. The fluid flows in the inner pipe is the tube side and in exchange another fluid flows in the outer pipe annulus. The theories of transient heat transfer in doublepipe heat exchangers were explained. Thermal analysis of double pipe heat exchanger by changing. The overall heat transfer characteristics of a double pipe. Yes, we provide the recommended values for tema design fouling resistances. Dynamic model and control of heat exchanger networks 8 where the subscripts t and s represent tube and shell side, respectively. Modeling and simulation of the double tube heat exchangers.
Pdf design and simulation of heat exchangers using aspen. The heat exchange duty a llows calculation of the log mean. Heat exchangers jordan university of science and technology. Aspen hysys pipe segment model and aspen hysys upstream.
The exchanger s performance can also be affected by the addition of fins or corrugations in one or both directions, which increase surface area and may channel fluid flow or induce turbulence. The high stresses produced by differential thermal expansion between outer and inner pipes are more easily handled. This is it the sticker album that you can receive directly after purchasing. A heat exchanger is a system used to transfer heat between two or more fluids. Conventional workflow for the design of heat exchangers requires manual data transfer from process. Double pipe heat exchanger design requires use of the heat transfer rate, the log mean temperature difference, and an estimate of the overall heat transfer coefficient to calculate the estimated heat transfer surface area. Introduction to hysys simulation heat transfer calculations. The aim of design is to heat the naoh using the steam. As indicated in figure 7, the double pipe exchanger consists of a pipe within a pipe. Fired heaters the selection of a heat exchanger depends on many factors including capital and. One fluid in a doublepipe heat exchanger flows through the smaller pipe while the other fluid flows through the annular space between the two pipes. A practical guide for planning, selecting and designing of shell and tube exchangers takes users on a stepbystep guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer.
This project work is based on design and thermal analysis of double pipe heat exchanger. In parallel flow the two fluids flow in parallel and in the same. Sec technical catalogue all sectionsview download individual sections 1 to 12. Tube heat exchangers general heat exchanger design 1. Fin construction details section of a double pipe heat exchanger. The most common heat exchanger is double pipe heat exchanger 4. It provides detailed thermal design, checking or simulation of shell and tube heat exchangers for industrial applications.
One fluid in a double pipe heat exchanger flows through the smaller pipe while the other fluid flows through the. Heat exchanger and its types engineering solutions. If you have a stream where more than one phase exists then you can calculate the. Heat exchangers 73 individual thermal resistances of the system. It is called a double pipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. Note that in a counterflow heat exchanger the outlet temperature of the cold fluid can exceed the outlet temperature of the hot fluid but this cannot happen in a parallel flow system. The double pipe heat exchanger is one heat exchanger pipe inside another larger pipe for either counter flow or parallel flow pattern. Or heat exchanger which are used when the flow rates of the fluids and the heat duty are small less than 500 kw construction of double pipe. Hot oil flows through the center tube in all six sections. Problem statementfreon12, at a flow rate of 10560 kghr, needs to be heated from. Dynamic model and control of heat exchanger networks. One fluid flows in the inner tube, while the other fluid flows in the annular space between the two tubes. The double pipe heat exchanger consists of six lengths of concentric tubing set out as shown in figure 1.
If necessary to help for selection of plate heat exchanger, please fax the form below to us. In counterflow, the two fluids flow in parallel, but opposite directions. Design and simulation of heat exchangers using aspen hysys dois. The heat exchanger is very flexible, and can solve for temperatures, pressures, heat flows including heat loss and heat leak, material stream flows, or ua.
This guide contains 100% coverage of all objectives for the certification exam. The double pipe heat exchanger is one of the simplest types of heat exchangers. Mechanical engineering reference manual for the pe exam, by michael r. A typical double pipes heat exchanger consists of one pipe places concentrically inside another of a large diameter pipe with appropriate fitting to direct the flow from one section to the next 3. It can be operated as a parallel flow or as a counterflow heat exchanger.
The heat exchanger page in the dynamics tab for most vessel. Start hysys plant third floor lab windows nt start e. It is shown how the heat transfer coefficients and the pressure losses are calculated. This pdf is with ease known record in the world, of course many people will. Download ebook heat exchanger equipment field manual common operating problems and practical solutions. You can simulate the plate heat exchanger perfect for your needs, any time of the day, from anywhere. The concentric tube heat exchanger was designed in order to study the process of heat transfer between two fluids through a solid partition. Looking for double pipe exchanger hysys tutorial pdf. Design procedure for a heat exchanger on the aspenplus. Lindeburg, pe gives the typical vallue for natural double pipe exchanger hysys tutorial pdf. This manual will show the steps necessary to create and design a heat exchanger unit on aspenplus. Furthermore, the surface area of the heat exchanger is proportional to the amount of heat that can be transferred and is the most indicative cost component of a heat exchanger wilcox, 2009. Double pipe heat exchanger design step by step software.
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