The most notable advantages of a plate heat exchanger are. To heat a cooler fluid by means of a hotter fluid 2. Fixed tubesheet exchanger nonremovable tube bundle. The overall heat transfer coefficient, u, is an approximate. When the heat exchanger handles dangerous fluids of high temperature and high pressure, caustic soda, etc. Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat load, kw 117. The objective of this laboratory exercise is to familiarize the student with heat transfer in tubular heat exchangers. References material safety data sheets msds are electronically stored and can be referred to in the msds program by equipment number, msds can also be. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. The purpose is to utilise the cooling effect, utilise which without a heat exchanger is otherwise lost to the ambient air via uninsulated suction lines. The exchange of heat is one of the most important processes in the chemical industry.
As per the design of all shell and tube heat exchangers, one fluid flows through the smaller. Pdf design of shell and tube heat exchanger with double. In intercoolers, boilers, preheaters and condensers inside power plants as well as other engineering pro cesses, heat exchangers are utilized for controlling heat energy. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water. Shellandtube heat exchanger sthe, where one flow goes along a bunch of tubes and the other within an outer shell, parallel to the tubes, or in crossflow fig. To reduce the temperature of a hot fluid by means of a cooler fluid 3. A heat exchanger is a component that allows the transfer of heat from one fluid liquid or gas to another fluid. Guidelines for the safe design and operation of shell and.
Plain tubular exchangers, shellandtube exchangers with plain tubes, and plate exchangers are good examples of prime surface exchangers. The exchanger takes one inlet and one outlet for hot fluid stream, and one inlet and one outlet for cold fluid stream. Heat exchangers have widespread industrial and domestic applications. In this application, two separated fluids at different temperatures flow through the heat exchanger. The heat exchanger block is used when two process streams are to exchange heat based on equations 11 14. Explains the detailed heat exchanger method in aspen plus. Closeup view of a section of a watertoair heat exchanger. Tube in tube heat exchanger type he tube in tube heat exchanger type he is used primarily for heat transfer between the liquid and suction lines of the refrigeration plant. Takes up much less space than a traditional shellandtube heat exchanger. A commonly used design is shellandtube heat exchanger which consists of.
This procedure applies to the pressure containing parts of the exchanger alone with supporting structures. 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 ft2 ft3. Selection of heat transfer models and fouling coefficients for shell side and tube side. Heat exchangers are devices that regulate efficient heat transfer from one fluid to another.
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