Inspection of unit at regular intervals and as frequently as experience indicates, an examination should be made of the interior and the exterior of the heat exchanger. Maintenance inspection control system for heat exchanger tubes. Onsite inspection of the failed heat exchangers showed. Maintaining a plate heat exchanger and its related cost is not just a good idea it is a necessity for any successful business strategy concerned with its continued manufacturing productivity. Furthermore, dont touch it until complete cooldown to the normal temperature after the shutdown. The authors have presented more than 100 short intensive courses on shellandtube heat exchangers, closed feed water heaters, and tubular exchanger inspection, maintenance, and repair in the united states, canada, and europe. Planning starts with establishing what data you need from your hx inspection and what you will do with it covered next.
If the heat exchanger is located at the inlet or discharge of a blower with a pulsating flow, such as a roots type rotary lobe blower, the heat exchanger must be protected from the pulsation by a chambered silencer. Heat exchanger inspection training the inspector camera. The heat transfer coefficient increases with increase in reynolds number in shell and tube heat exchanger for both hot fluid inlet and cold fluid inlet. Summary powerful exchanger tubes tracing and management system. Customers can request general inspections of both plate and shelland tube heat exchangers, in which case the funke team will arrive promptly in its modern, wellequipped vehicle, and will attend to the maintenance and repair of the equipment in expert fashion. Pdf a shell and tube heat exchanger reliability was done in this study using. Integrity inspection of plate and tubular heat exchanger can be tested in situ by the conductivity or helium gas methods. Lewis, in heat exchanger equipment field manual, 20. By periodically calculating the overall heat transfer coefficient from exchanger flow rates and temperatures, the owner of the heat exchanger can estimate when cleaning the heat exchanger is economically attractive. Pdf repair of tubetubesheet weld cracks in a cracked gas.
Design of heat exchanger for efficient quenching process of. Along the length of the tubes tube tube sheet joints can be visually inspected and standard ndt techniques, like penetrant testing or magnetic testing can be utilized. Contact alfa laval for advice and expert repairs when needed. It is safe to say that it would be rare to find someone in this industry that does not believe in having a plate heat exchanger maintenance strategy. The tema standards and software have achieved worldwide acceptance as the authority on shell and tube heat. The heat exchanger must be isolated from system vibrations using flexible piping connections and isolation pads on the mounting feet. It was found that cold fluid outlet temperature decreases and the overall heat transfer coefficient increases with increase in flow rate of cold fluid. When the heat exchanger is under running or pressurizing, never unscrew any of the tightening bolts. Started in 1990, enecon is a recognized world leader in polymer technologies and coating systems. How to do preventive maintenancecondenser heat exchanger. Gwa also provides consulting services for pipeline inspection, heat exchanger tube inspection, anchor rod inspection, and other challenging guided. Get your kindle here, or download a free kindle reading app. We deliver effective nonintrusive inspection nii for heat exchanger vessels and apply this approach widely to the shell side.
Nowadays we have technicians with asnt certification for eddy current test in tubes and apr acoustic pulse reflectometry. This is a handson tech teaching tech workshop on greatly increasing your abilities at finding failure using the inspector camera. The heat exchanger inspection article provides you with information about the inspection of the heat exchanger and heat exchanger testing during the manufacturing phase, as well as inservice inspection in operating units. The information supplied in this manual is based on over four decades of field experience with our heat exchangers.
Jul 26, 2019 learn how a shell and tube heat exchanger works. We provide industries, utilities and institutions with. Straight tube heat exchangers removable bundlesallow for sufficient clearance at the stationary head end for removal of the bundle from the shell and provide adequate space beyond the rear head to accommodate removal of the shell cover and or floating. Heat exchangers on food duties should be cleaned every day, a suggested method is. Tube cleaning and maintenance condenser and heat exchanger. When heat exchanger handles steam and other fluid of high temperature, it has hazard of burns. Since 1979, he has consulted on a variety of problems with process and power generation heat exchanger problems. Heat exchanger equipment field manual sciencedirect. The tubular exchanger manufacturers association tema is an association of manufacturers of shell and tube heat exchangers. Asian, european, and north american nondestructive testing societies and. We can also perform the necessary repairs and inspections at your location or on board the vessel itself. Inspection of the entire length of heat exchanger tubes however brings along a few extra challenges. Technoparts has a division specialized in shell and tube heat exchanger inspection. The tubular exchanger manufacturers association, inc.
Types and application, design, operation and maintenance u8014euro training center for training and consulting provides management training, leadership training, executive courses and public courses. We realize the importance of condenser cleanliness. Maintenance inspection control system for heat exchanger. Inspection procedure for shell and tube heat exchangers printed. The shell and tube heat exchanger in the photo above has about twelve times the efficiency than a hypothetical singletube heat exchanger of the same size. All exchangers are designed in accordance to the tubular exchanger manufacturers association tema designation of heat exchangers including shell and utube exchangers for single phase, multiphase and multicomponent condensers horizontal, vertical, and. The schedule assumes contherm or convap production operation of approximately 40 to 50 hours per week. The object for repair in this study is a weldment tube. However, there is a disadvantage to smaller tubes if the fluid in your application is very viscous or has particulates, it can foul up the tube and undermine the heat transfer process. Advice on evaluating heat exchangers and on inspection strategies for both operating and outofservice equipment will help prevent the need for costly reapairs. In the focus on finding failure advanced class for heat exchanger inspection training, each technician will learn how to increase their ability to be truly focused on finding failure to incredible levels. The authors have presented more than 100 short intensive courses on shell and tube heat exchangers, closed feed water heaters, and tubular exchanger inspection, maintenance, and repair in the united states, canada, and europe. They are able to maintain product integrity through gentle product handling, but still meet the requirements for your application. How shell and tube heat exchangers work engineering youtube.
Che services offers dependable and quality workmanship at a competitive price. Maintenance and repair of your heat exchangers cp heat exchanger. Cp heat exchanger technologies handles the full maintenance and repair of your heat. Tema is trade association of leading manufacturers of shell and tube heat exchangers, who have pioneered the research and development of heat exchangers for over sixty years. Straight tube heat exchangers removable bundlesallow for sufficient clearance at the stationary head end for removal of the bundle from the shell and provide adequate space beyond the rear head to accommodate removal of the shell cover andor floating. If you are in need of highly efficient heat exchange for any heat application in the sanitary industry, we can help. Tema has established a set of construction standards for shell and tube heat exchangers. Condenser and heat exchanger services tube cleaning and. Pdf risk based inspection of gascooling heat exchanger. Gwa sells mss guided wave testing system lrut inspection eqipment to ndt service providers worldwide and supports them with training of personnel, data analysis, supply of accessories, and onsite training of challenging inspection situations.
Find out more about the line of tubular heat exchangers from some of the best companies in the business. Tubular heat exchanger inspection, maintenance, and repair. Learn about its main parts, components, how it works, design features, advantages and disadvantages. How shell and tube heat exchangers work engineering. Design of heat exchanger for efficient quenching process. Apr 20, 2015 heat exchanger tubular inspection planning. In order to maintain heat exchanger tubes in optimum condition, regular nondestructive testing ndt is crucial for the detection of flaws that may lead to poor heat transfer and. Quick startup and shutdown is a major cause of heat exchanger damage. Product recovery is possible using pigging technology. To minimise the risk of heat exchangers malfunctioning, funke also offers its. We represent a comprehensive line of heat exchangers for the highpurity business that can cover all of your processing needs, whether it is a particularly viscous product or limited space availability. We represent a comprehensive line of heat exchangers for the highpurity business that can cover all of your processing needs, whether it is a particularly viscous product or. The authors have presented more than 100 short intensive courses on shelland tube heat exchangers, closed feed water heaters, and tubular exchanger inspection, maintenance, and repair in the united states, canada, and europe.
Mar 27, 2017 started in 1990, enecon is a recognized world leader in polymer technologies and coating systems. Pass pure water through the heat exchanger for 510 minutes. Inspection it is recommended that heat exchangers be inspected as part of the routine maintenance program of the system into which they are installed. Tmic is maintenance personnel s longawaited work history management. Select chapter 3 tubular heat exchanger inspection, maintenance, and repair book chapter full text access chapter 3 tubular heat exchanger inspection, maintenance, and repair. Following the instructions contained in this manual will extend the service life of your heat exchanger. The heat transfer coefficient increases with increase in reynolds number in shellandtube heat exchanger for both hot fluid inlet and cold fluid inlet. Corrugation, and the optimized productmedia volume ratio, increases the thermal efficiency of our heat exchangers.
Additional benefits include tips on tube plugging, retubing, shellside repairs and alterations, maintenance, repair, and alteration of closures, channels, bonnets, and tubesheets. Design technology of largescale spiral wound heat exchanger in. Pdf reliability analysis on a shell and tube heat exchanger. Shell and tube exchangers an overview sciencedirect topics. Discharge the fluid with water and monitor the situation through the glass tube. Heat exchanger inspection planning inspectioneering. Contherm scraped surface heat exchanger preventative maintenance schedules below is a periodic maintenance schedule for your contherm scraped surface heat exchanger or convap scraped surface evaporator. When its finally time for maintenance shes are considerably. The varitube tubular heat exchanger is a straight tube heat exchanger with one or more inner tubes situated in a shell. Sonomatic provides a range of inspection and integrity services for heat exchangers and tubing. Like with most equipment, inspection planning is essential for the successful inspection and maintenance of heat exchanger tubulars. Series fixed tube sheet heat exchangers spirax sarco. Our thorough preparation enables us to limit production downtimes to the minimum.
A better understanding of the basic principles of heat transfer and fluid flow and their application to the design and operation of shell and tube heat exchangers as well as plate heat exchangers, air cooled exchangers and other specialty heat exchangers that you gain from this course will enable you to improve their effectiveness and extend. The guidelines on heat exchanger repair, preventive and predictive maintenance. Spiral wound heat exchanger swhe was first introduced in china because of the. Mechanical design asmetema, opera ons and maintenance 2p5th 29th september 2017 at kuala lumpur, malaysia. We provide industries, utilities and institutions with premium repair and protection products. This approach means inspection of the shell can take place without the need to remove the tube bundle.
When inspection or maintenance is needed, kelvion can carry out this work in its entirety. Inspection procedure for shell and tube heat exchangers. Tube bisecting is a destructive inspection to split tube longitudinally and measure the wall thickness the over entire length of tube. Heat exchanger engineering, repair, maintenance and overhaul.
These tubular heat exchangers are the ideal option for high viscous products or products with particulates. Heat exchanger cleaning there is a need to clean pipes g and tubes of various diameters t kl v 2 at food industry enterprises. In the end, rbi method can be applicated to gascooling heat exchanger. The planning process starts by finding out what data is needed from the inspection. Petrosync shell and tube heat exchanger mechanical design. Tubular heat exchanger inspection, maintenance, and repair will be your most valuable costcutting field manual. The gas to be heated enters the distributor a and goes inside the tube bundle that is immersed in. Heat exchanger tubular inspection inspectioneering. Tube count table case study on heat exchanger repair using asme pcc2 philosophy and methods day 5. Heat exchanger tubes inspection eddy current aprvacuum.
942 917 332 1124 108 711 309 467 1127 299 1300 1650 728 1002 517 1101 1434 243 575 1070 825 873 1064 491 190 505 1051 523 963 1454 1028 1279