In its simplest form, the double pipe heat exchanger, also known as a concentric pipe, hairpin, jacked pipe and jacketed utube heat exchangers, consists of a single tube mounted inside another. Although the necessary equations for heat transfer and the pressure drop in a double pipe heat exchanger are available, using these equations the optimization of the system cost is laborious. Heat exchanger and its types engineering solutions. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by. The software will do all the thermal calculations involved in the design and will generate a summary of. This constraint is used to tune the controller parameters. The theories of transient heat transfer in doublepipe heat exchangers were explained and followed by literature correlations. The heat recovery from hot fluid is used to increase the temperature of cold. Design and rating of shell and tube heat exchangers page 4 of 30 mnl 032a issued 29 august 08, prepared by j. Dec 21, 2014 if you want to obtain an excel spreadsheet for preliminary design of double pipe andor shell and tube heat exchangers, click here to visit our download page. Heat exchanger gtl heat exchanger for systems with gas and thermal liquid flows. Heat transferheat exchangers blogs engineering excel templates.
Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat load, kw 117. Counter flow heat exchangers are the most efficient of the three types. The heat exchanger is found in large construction to support cooling process such as fossil fuel power plant. Doublepipe exchangers is the generic term covering a range of jacketed u tube exchangers normally operating in countercurrent flow of two types. Chapter 5 heat exchangers faculty of engineering and. The doublepipe heat exchanger is one of the simplest types of heat exchangers. Pdf design of double pipe heat exchanger kirti zare.
A procedures manual was created for the doublepipe heat exchanger. Double pipe heat exchanger design calculations john andrew kane p. Yes, we provide the recommended values for tema design fouling resistances. Tech 1 pg scholar, department of thermal, mlr institute of technology, ranga reddy, telangana, india. Doublepipe heat exchangers, with their typical uturn shape, are one of the simplest and cheapest type of heat exchangers used in the chemical process industry. Double pipe heat exchanger design software hairpin heat. Read on for information about the use of an excel spreadsheet for preliminary heat exchanger design calculations. Nov 22, 2012 design of double pipe heat exchanger posted in chemical process simulation. Is there a database or recommendations for the fouling factors. That is, it will give the highest overall heat transfer coefficient for the double pipe heat exchanger design. Doublepipe shellandtube spiral tube pipe coils crossflow to tubes parallel flow to tubes. We certify that the project entitled design of small heat exchanger double pipe type is written by mohamad shafiq bin alias. The 3d model of the ceramic heat exchanger is created using nxcad software from the 2d drawings.
Heat exchangers 73 individual thermal resistances of the system. Double click the max temperature variation block to view constraints on the temperature variation of the heat exchanger. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Problem statement it is desired to heat 5 kghr of cold benzene from 80 to 120. Explains the detailed heat exchanger method in aspen plus.
However, since double pipe heat exchangers are simple, they are used to teach heat exchanger design basics to students as the fundamental rules for all heat exchangers are the same. The entire analysis has been done by selecting an existing design of a double pipe heat exchanger with specified flow conditions at the inlet to the heat exchanger. 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. 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. This example studies the cooling of hot oil c by a cool oil 60c entering in countercurrent. The exchanger is modeled as a firstorder system with delay. Design of double pipe heat exchanger posted in student. Double pipe heat exchanger design dhex is a software tool that is made to demonstrate the chemical design calculations of double pipe hairpin heat exchangers. Doublepipe heat exchanger doublepipe heat exchanger loading. Pdhonline course m371 2 pdh shell and tube heat exchangers. Double pipe heat exchanger two sets of concentric pipes, two connecting tees, and a return head and a return bend. Setting shell side and tube side pressure drop design limits. Double pipe heat exchanger design with counterflow or.
Tube heat exchangers general heat exchanger design 1. Design of double pipe heat exchanger student cheresources. Doublepipe heat exchanger 3d cad model library grabcad. Hi i wish to design a double pipe heat jacketed heat exchanger by using htri. Heat exchanger design free download as powerpoint presentation. If you continue browsing the site, you agree to the use of cookies on this website. Double pipe heat exchanger calculation does the thermal and hydraulic design of double pipe heat exchangers and estimate number of hairpin required.
The two most common heat exchanger design problems are those of rating and sizing. This excel spreadsheet helps you design a double pipe heat exchanger also known as a concentric tube heat exchanger. Mar, 20 calculates the length of a concentric counterflow heat exchanger using the same parameters as in sizing a heat exchanger. The software will do all the thermal calculations involved in the design and will generate a summary of all results.
Sep 28, 2017 for the love of physics walter lewin may 16, 2011 duration. Heat exchanger g heat exchanger for systems with gas and controlled flows. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid temperature greater than the coldest hotfluid temperatue. Make an initial estimate of the overall heat transfer coefficient, u, based on the fluids involved. Design, analysis and fabrication of shell and tube heat. The double pipe heat exchanger is one of the simplest types of heat exchangers. The inner pipe is a suction pipe of the pump in which hot hydrocarbon flows and in outer annulus cold crude oil passes from opposite direction.
What are practical applications of double pipe heat. Nxcad is the worlds leading 3d product development solution. Checalc chemical engineering calculations to assist process, plant operation and maintenance engineers. In this arrangement a cold fluid flows through a pipe in the center of the apparatus and is heated by a hot fluid on the outside of that pipe. Double pipe heat exchanger design free to try webbusterz engineering software windows 98me2000xpvista7 version 2. Products double pipe heat exchangers heat transfer. 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.
Hisaka websimulator hws plate heat exchanger this is the. E1mnl032a design and rating of shell and tube heat. Heat exchanger gg heat exchanger for systems with two gas flows. In an excel spreadsheet for thermal design of a double pipe heat exchanger, the heat exchanger equation can be used to calculate the required heat exchanger area for known or estimated values of the other three parameters, q, u, and. Since all heat exchangers considered in this experiment have a single pass for both the hot and cold fluids, the discussion below is limited to singlepass heat exchangers. We have examined the final copy of this project and in our opinion. You can simulate the plate heat exchanger perfect for your needs, any time of the day, from anywhere. Combining each of these resistances in series gives.
Double pipe heat exchanger design free download and. The double pipe heat exchanger is one heat exchanger pipe inside another larger pipe for either counter flow or parallel flow pattern. One set of these tubes contains the fluid that must be either heated or. The hot water used in the shellandtube heat exchanger is produced by means of a double pipe heat exchanger. The screenshot below shows a heat exchanger thermal design calculations spreadsheet that can be used to carry out thermal design of a double pipe heat exchanger. Single inner pipe formed into a removable u or element, with either. Double click the heat exchanger model block to view the model details. Pdf design of double pipe heat exchanger kirti zare, dipika kanchan, and nupur patel academia. Design and experimental analysis of spiral tube heat exchanger 38 fig. Each of those parameters will be discussed briefly in the next three sections. Calculates the length of a concentric counterflow heat exchanger using the same parameters as in sizing a heat exchanger. The image shows only the beginning of the calculations.
Heat exchangers are used in industrial processes to recover heat between two process fluids. Design of small heat exchanger double pipe type mohamad shafiq bin alias thesis submitted in fulfillment of the requirements for the award of the degree of. Shell and tube heat exchanger design in solidworks youtube. The actual developer of the software is webbusterz engineering software. It is called a doublepipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. Input and output temperatures of annulus and pipe are known. Double pipe exchangers is the generic term covering a range of jacketed u tube exchangers normally operating in countercurrent flow of two types. Principles of finnedtube heat exchanger design for enhanced heat transfer 2nd edition by dipl. Toluene will be cooled from 160 to 100 the specific gravities at 68. A primary advantage of a hairpin or double pipe heat exchanger is that it can be operated in a true counterflow pattern, which is the most efficient flow pattern.
Double pipe heat exchanger design step by step software. The fluid flows in the inner pipe is the tube side and in exchange another fluid flows in the outer pipe annulus. A heat exchanger thermal design calculations spreadsheet. Access the url below and click on the websimulator icon. Doubleclick the heat exchanger model block to view the model details. They have a particular advantage when close temperature approaches are needed or in high pressure applications. The pressure of tube is around 150 bar and the pressure of annulus fluid is 10 bar and both in the liquid phase. Double pipe heat exchangers come into their own when.
Design of doublepipe heat exchanger chemical process. Calculate the required heat transfer rate, q, in btuhr from specified information about fluid flow rates and temperatures. Thermal analysis of double pipe heat exchanger by changing. Chemical engineering calculations to assist process, plant operation and maintenance engineers. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water. A device whose purpose is the transfer of thermal energy between two fluids.
Optimum design of double pipe heat exchanger sciencedirect. Fired heaters the selection of a heat exchanger depends on many factors including capital and. Design of doublepipe heat exchanger posted in chemical process simulation. The model of ceramic heat exchanger was taken from the reference papers a theoretical analysis and cfd simulation on theceramic monolith heat exchanger. Shell and tube heat exchangers consist of series of tubes. 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. The heat exchange duty a llows calculation of the log mean. Process fluid assignments to shell side or tube side. 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. Heat exchanger for systems with fluids susceptible to phase change.
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