I want to design a shell and tube heat exchanger for steam. These specifications take into account a maximum flow velocity of 2. Most surface condensers in refrigerated systems are the shell and tube type see figure 2. Design of shell and tube exchangers is commonly governed by the standards created by tema tubular exchangers manufacturers association. Shell and tube condenser design cnd is a software that is made to demonstrate thermal analysis and design calculations required for designing shell and tube condensers. As older facilities are upgraded or newly designed facilities are built, large plate type heat exchangers are replacing tube and shell heat exchangers and becoming more common. The noncondensables gases will then be transferred into the nox abatement. 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. The actual developer of the program is webbusterz engineering software. An introduction to condensers and auxiliary equipment for.
If you are interested in the shell and tube type of condensers. Shell and tube heat exchangers are most commonly used in heating or cooling process fluids and gases. The chosen heat exchanger flow pattern is also needed in order to calculate the log mean temperature. Water flow optimized to reduce the fouling and erosion risks. If you are interested in the shellandtube type of condensers. Selection of heat transfer models and fouling coefficients for shell side and tube side. Compact design with about 15%20% shorter lenght and weight comparing with existing solution. Perform thermal design calculations for shell and tube. Heat exchanger shell and tube heat exchanger manufacturer. Condenser heat exchanger is very common in process industry, condensers may be classified in two main types.
Plate and frame type heat exchangers are also used as condensers in refrigerated systems. The three most common types of shellandtube exchangers are fixed tubesheet design, utube design, and the floating head type. Pdf design of shell and tube heat exchanger single phase. For ocean, lake, or river water, the maximum expected temperature is used for design purposes. Design procedure of shell and tube heat exchanger alok shukla, prakash kumar, dr. Three tube lenghts to match operating conditions with different temperature approaches. Shell and tube condenser design student cheresources. This software can design, horizontal shell side condensers, horizontal tube side condensers, vertical shell side condensers, vertical tube side condensers and reflux condensers. For condensation in the tube side by taking onehalf of the conventional pressure drop relation can be used. These are some exchanger parts are important for the overall design of the exchanger shell and tube heat exchanger types. Karl ponweiser institute for thermodynamics and energy conversion vienna university of technology vienna, austria published by wseas press. Shell and tube condensers circulate the coolant through tubes.
Condensers which have a coolant and a condensing vapor brought into direct contact and other types which have the coolant and a condensate stream separated by a tube wall or a solid surface. For cooling towers, design is usually based on water temperature from the tower and an ambient wet bulb. The condenser capacity is strongly influenced by system operating conditions. Selection of heat exchanger tema layout and number of passes.
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. Tube side pressure drop in case of tube side condensation. Firstly, a condenser is an apparatus that is used to convert vapour into a liquid state. I am trying to design a shell and tube condenser for the purpose of reducing the amount of water in the waste gases coming from two furnaces. Shell and tube heat exchangers basic calculations instructor. The tubes may be rolled into grooves in the tubesheet, welded to the tubesheet, or both to ensure against leakage. Introduction a condenser is a type of heat exchanger in which vapors are transferred into liquid state by removing the latent heat with the help of a coolant such as water. The design is the main subject of refrigeration and air conditioning shell and tube heat exchanger we design as well as manufacture shell and tube heat exchanger for a chiller, heat pumps, refrigeration and airconditioning, oil cooler, water cooler and for much more machinery types of equipment. Pdhonline course m371 2 pdh shell and tube heat exchangers.
Shell and tube heat exchanger as the name proposed, they are built around tubes mounted in a cylindrical shell, the tubes are parallel to the shell. Practically, yes, but technically speaking a condenser is not a heat exchanger. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarised as follows. 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. Design procedure of shell and tube heat exchanger 117. A liquid ring vacuum pump andor steamjet air ejector is used to maintain vacuum in a condenser. Types of heat exchanger, process design of shell and tube heat exchanger, condenser, and reboilers. Can anyone help me with this design using excel spreads hit. Solving a design problem for shell and tube heat exchanger in htri software using tubular exchanger manufacturing association tema standards you can make full design of heat exchangers for. The tubes may be straight or bent in the shape of a u, called utubes.
Nov 01, 2016 solving a design problem for shell and tube heat exchanger in htri software using tubular exchanger manufacturing association tema standards you can make full design of heat exchangers for. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarized as. Small tonnage condensers include special multipass heads and are manufactured in very large quantities to provide the highest capacity per ton available. The process fluid will flow through the shell side while water will flow in the tube side. Principles of finned tube heat exchanger design for enhanced heat transfer 2nd edition by dipl.
This software can design, horizontal shell side condensers, horizontal tube side condensers, vertical shell side condensers, vertical tube side condensers and reflux. Referencesq fundamentals of heat exchanger design ramesh k. Pdf heat exchanger is necessary laboratory equipment in a thermofluid laboratory, and lack of this equipment makes learning ineffective. Specification of tube parameters size, layout, pitch. The condenser range includes different products that are optimized for hcfc and hfc refrigerants to provide the best efficiency. This is necessary for this design to protect the tube profile from wear. Bahirdar university institute of thechnology smie thermal page iii design of shell and tube heat exchanger nomenclature. Shell and tube condensers shell and tube condenser. For performance data for other refrigerants and coolant, see bitzer software. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarised as. Pedce, asme, eac, selo, dnv and other major marine. Calculate the required heat transfer area based on values needed.
The parts of shell and tube condensers and plate condensers involved in the transfer of heat from the steam and condensate to the cooling. Pdf design of shell and tube heat exchanger with double passes. Process fluid assignments to shell side or tube side. There can be many variations on the shell and tube design. Principles of finnedtube heat exchanger design for enhanced heat transfer 2nd edition by dipl. Typically, the ends of each tube are connected to plenums sometimes called water boxes through holes in tubesheets.
E1mnl032a design and rating of shell and tube heat. The software also includes a basic physical properties. Thermal design of a shell and tube heat exchanger typically includes the determination of heat transfer area, number of tubes, tube length and diameter, tube. One fluid flows inside the tubes is called the tube side fluid, while the other fluid flows across and along the axis of the exchanger in the shell side shell side fluid. The software can design, horizontal condensers, vertical condensers including reflux condensers. Pdf the exchange of heat is one of the most important processes in the chemical industry. Systems that have dry cooling sometime use direct contact condensers. Shell and tube evaporators and condensers from servicefirst. In all types, the frontend head is stationary, while the rearend head could be either stationary or floating depending upon the thermal stresses in the shell, tube, or tubesheet due to temperature differences as a. Chapter 52 heat exchangers, vaporizers, condensers joseph w. A liquid ring vacuum pump and or steamjet air ejector is used to maintain vacuum in a condenser. A condenser creates the lowest possible turbine back pressure by evacuating air from a condenser shell.
I know that q mcpt and so the outlet temperature of water can be found by tout. The six optimized dimensional parameters are number of tubes, tube length. This type of condenser is used in applications where the cooling water is the same quality as the steam condensate. However, new improvements in gasket design and overall heat exchanger design have allowed some large scale applications of the plate type heat exchanger. I want to design a shell and tube heat exchanger for steam condensation sizing problem, what should be my approach to design. For simplicity the rst one is often referred to as the shell and tube heat exchanger and the second is referred to as the shell and tube condenser even though both are versions of a shell and tube heat exchanger. A heat exchanger is a system used to transfer heat between two or more fluids. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Many features including exporting to engineering data sheet. Condenser heat exchanger thermal analysis and design. Shell and tube heat exchanger design calculations to find the required heat transfer area can be done if the needed rate of heat transfer from one fluid is known along with the desired inlet and outlet temperatures of the other fluid and an estimate for the overall heat transfer coefficient.
However, in calculations of heat exchanger design, we. The condenser has a steel shell and tube sheet with rugged cast bonnets. When possible, utubes are used, requiring only one. Setting shell side and tube side pressure drop design limits. Heat exchanger calculations and design with excel spreadsheet. Small tonnage condensers include special multipass heads and are. Shell and tube heat exchanger step by step calculations to. Typically found in applications where a need to heat or cool large volumes exist. Shell and tube heat exchangers basic calculations pdh online.
1492 860 1576 1442 1576 877 789 232 1220 1486 172 196 87 30 1144 197 206 1371 759 403 1022 93 1397 849 1253 7 472 251 627 39 1059 29 308