Heat exchanger design handbook linkedin slideshare. Piping coordination system pid heat exchanger symbols. As the worlds largest manufacturer of heat exchangers, we are very proud of our products and services. Correlations such as beggsbrill can be used for this purpose. Gasket and lining can be damaged if a pipe is connected in the wrong way. The advantage of a heat pipe heat exchanger is the possibility to use a more compact and lighter radiator. Calculating the film heat transfer coefficient for the inner tube side flow, using the dittusboelter 3, correlation. The term heat exchanger applies to all equipment used to transfer heat between two streams. As an example, a typical 3ton ground heat exchanger may use 200 feet of headers and 400 feet for each parallel loop. I believe im the best candidate for heat exchanger design, inc. However, mutlistream heat exchangers are sometimes used with energy extensive processes, such as lng processing, to reduce capital cost. Typically, a heat exchanger is used with two process streams. Sec series heat exchangers piping arrangement diagram. The diameters of three pipes are prescribed and we have to determine the length of heat exchanger.
Pdf comparative study between curved and straight pipe heat. Heat exchangers jordan university of science and technology. Definitions definitions astm american society for testing and materials. To understand the basic operation of heat exchangers. Different types of heat exchangers in addition, the overall heat transfer equation for the exchanger must be solved simultaneously. Flow control valve maxiflo swimming pool heat exchangers model wmph95 6360000430309.
Heat exchanger has no deposit of dirt on the pipe because pipes are thin. Provide air vent valves for the heat exchanger so that it can be purged to prevent or relieve vapor or gas binding. A device whose purpose is the transfer of slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Plain tubular exchangers, shellandtube exchangers with plain tubes, and. A plate heat exchanger, phe, is a compact heat exchanger where thin corrugated plates some 0. 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. When heat exchanger handles steam and other fluid of high temperature, it has hazard of burns.
When the heat exchanger is under running or pressurizing, never unscrew any of the tightening bolts. Exergy can supply optional seal nuts, which are used to eliminate teflon tape or other pipe sealants and will prevent overtightening of npt fittings. Numerous articles have been published regarding the advantages of compact heat exchangers. Figure 5 illustrates the spiral exchanger configuration. Barred tee, seamless barred tee, erw barred tee, carbon steel barred tee, pipe tee suppliers. Heat pipe heat exchanger heat exchanger, which transfers the heat from one medium to another, is the most common thermal equipment in various of industry sectors. Overall heat transfer coefficient for doublepipe heat. The overall heat transfer characteristics of a double pipe. We have prepared this instruction manual to assist you with your alfa laval plate heat exchanger in various situations. For the design purpose, hot water temperature drop is considered as 8.
The most common heat exchangers used in process plants are. Base your calculation on the outside area of the inside pipe. The theories of transient heat transfer in doublepipe heat exchangers were explained and. If used, install and adjust the piping system first. Brazed plate heat exchangers installation, operation, and maintenance manual 7 4. Counterflow heat exchanger, larger hot fluid specific heat flow, graph of temperature vs flow. The double pipe heat exchanger is one of the simplest types of heat exchangers. Calculate the rotameter setting for the desired waterside flow rate. We have built a reputation for quality in the design and manufacture of heat exchangers for pharmaceutical, biotechnology and other industries. Fadi antoine wakim, msc hydraulics and hydrology engineer, bechtel oil, gas and chemicals inc. 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. As the fluid passes through the exchanger its pressure will drop. The doublepipe heat exchanger is one of the simplest types of heat exchangers.
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. However, in a heat pipe heat exchanger, the heat pipe not only acts as a. Heat exchanger design handbook by kuppan heat transfer equipment design slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. On standard heat exchangers, there is a 34 or 1 inch female npt drain coupling either on. D advantages limitations comparison with conventional shall and tube heat exchanger design types cost estimation numerical problems. Pressure drop in the tube side of heat exchangers can be calculated using correlations for pipeline pressure drop. Alfa laval industrial line is a wide product range that is used in.
Furthermore, dont touch it until complete cooldown to the normal temperature after the shutdown. Our heat exchanger experts ensure that you get the most efficient and costeffective design. Thank you for purchasing an alfa laval plate heat exchanger. Design guide for heat exchanger piping piping engineering. As its name implies, this type of heat exchanger consists of a shell a large vessel. Heat exchanger piping for low pressure applications.
Air that is exhausted from a building, to maintain favorable indoor air quality, has been cooled summer or heated winter to the typical space temperature of 70 to 75f. A procedures manual was created for the doublepipe heat exchanger. Heat exchanger piping heat exchanger transport phenomena. John richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 2 41. Control at the spiral exchanger are located on the ends of the unit, clear of the cover plate swing area, and at the front and on one side for the plate exchanger. Carbon steel copper inconel monel nickel stainless steel. Chapter 5 heat exchangers faculty of engineering and. Calculate the heat transfer area of the double pipe heat exchanger in the lab. To demonstrate the basic equations of heat exchanger operation. Heat exchangers have widespread industrial and domestic applications. Heat exchanger steam to hot water author department of veterans affairs, office of acquisition logistics and construction, office of construction and facilities management, office of facilities planning, facilities standards service.
Avoid damaging the heat exchanger by using the wrench flats provided. Q ualmtd 7 calculating the overall heat transfer coefficient at different operating to be constant throughout the exchanger, using eq. Chapter hvac applications for pe pipe 468 cooling capacity is needed. Simple or composite wall of some kind divides the two. Heat exchanger steam to hot water veterans affairs. You now receive a twoyear warranty from date of shipment on all allegheny bradford heat exchangers. On semiwelded units it is a safety issue if the wrong pipe is connected to the wrong port, double check that the correct media is connected to the. I have experience in the specific department in question, as a team leader, and i look forward to building on those leadership skills with your organization.
Pdf the double pipe heat exchanger is one heat exchanger pipe inside another larger pipe for either counter flow or parallel flow pattern. Engineering page heat exchangers standard pipe sizes. 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. Publishes standard specifications for terminology, labeling, testing and production. We value you as our customer and wish to assure your satisfaction. The hp condensers 910 are cooled by the liquid oil or water loop connected to. Air that is exhausted from a building, to maintain favorable indoor air quality, has been cooled summer or heated winter to the typical space temperature of. Background a heat exchanger is a heat transfer device whose purpose is the transfer of energy from one moving fluid stream to another moving fluid stream.
As indicated in figure 7, the double pipe exchanger consists of a pipe within a pipe. Finned pipes and tubes are commercially available in various sizes and materials. High performance exceptional value call 18003356650 for selection assistance. Connect a pipe in the way it is meant to be connected to the plate heat exchanger. Pdf this work focuses on an increase in the effectiveness for straight double pipe heat exchanger through curving the pipe through 180o. Double pipe heat exchanger two sets of concentric pipes, two connecting tees, and a return head and a return bend. If trenching for a horizontal installation or header system, avoid sharp bends around corners. These are typically used in applications where there is a ducted exhaust stream. Its widely used in chemical, energy, machinery, transportation, refrigeration, air conditioning and aerospace fields. Tech 1 pg scholar, department of thermal, mlr institute of technology, ranga reddy, telangana, india.
Combining each of these resistances in series gives. Install proper relief valves and temperature alarms to insure the heat exchanger isnt subject to conditions beyond the intended design. Retain extra sig figs since this is an intermediate calculation. Design guide for heat exchanger piping pipingengineering. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. Reason for heat exchangers a heat exchanger is a piece of equipment built for. A sthe is the most common type of heat exchanger in oil re fineries and other large chemical processes, and is suited for higherpressure applications. Click here to get a preliminary idea about shell and tube heat exchangers. Finned pipe and tubes are used within shell and tube type heat exchangers to enhance the heat transfer between the inside of the heat exchanger tube or pipe, and the outside. British thermal unit btu the british thermal unit is a unit of measure equal to the amount of heat necessary to raise the temperature of one pound of water one degree fahrenheit.
Heat exchangers 73 individual thermal resistances of the system. In addition, the proposed radiator is expected to be more robust as it is less sensitive. Finned tubes and pipes heat exchangers engineers edge. Piping at spiral and plate exchangers is also positioned to allow the opening of covers and the removal of plates. Tighten the seal nuts against the heat exchanger last. Alfa laval m10 gasketedplateandframeheatexchangerforawiderangeofapplications. In addition, the pressure drop can be related directly to the flow rate through a flow rate dependent. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and.