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ThermofinISTEAMSteam coil heat exchangersManufacturing expertise at workFor sustainable exchanges .
AéroréfrigérantISTEAM: Custom BuiltSteam CoilsThe ISTEAM exchanger was the first heat exchanger product designed by Thermofin. Over theyears, its evolving design has benefited from Thermofin’s significant experience with thousandsof installed units. The ISTEAM coil’s purpose is to transfer heat from steam. Steam, sometimesreferred to as a “wild beast” by experienced boiler operators, can be unpredictable if all aspectsof the heat exchanger, either thermal or mechanical, are not controlled properly. Accordingly,Thermofin is pleased to offer a wide range of specially designed steam heat exchangers, custommade to meet the exacting needs of your process.La performance Type Zà tous les niveaux:This is the most widely used steam coil model, particularly inthe pulp and paper industrial sector. Its tubes are specificallybent to allow for the thermal expansion of the tubes exposedto high temperature steam. The inlet and outlet connectionsare at opposite ends and allow for easy vertical orhorizontal installation.Type Z exchangerTube bending that absorbsthermal expansionType UHIntegrally bent U-tubes without finsat the bend (no welding)This type of steam coil incorporates integrally bent U-tubesand a special casing design to insure a minimum of weldingis used at assembly, and that the tubes can thermallyexpand. There is no risk of cracks at welds for thishorizontally installed steam coil. This design also standsout for its ease of installation since both inlet and outletconnections are at the same end.Mastery
Type VCPrécisionThis steam coil was specifically designed for air temperatures that are below freezing, to preventthe costly consequences of freezing condensate. The concept is to insert an open-ended shorterdistribution tube within an outer fin tube thus allowing the condensate that is flowing in the annularclearance to be kept warm by the steam condensing in the distribution tube. The tubes are inclinedin order to promote the condensate flow by gravity. Consequently, the type VC steam coils alwayshave both their inlet and outlet connections at the same end of the coil. Installation may be horizontal or vertical. This type of coil is also ideal for conditions of operation with superheated steam.Header detailType VCType AFZThe Type AFZ steam coils represent the best choice for preventing condensate from freezing, they are recommended for extremelylow air temperatures. The benefits of this vertical tube installationdesign are related to the geometry that promotes the continuouspurging of noncondensable gases from the first row of tubes and theflowing of the condensed water to the condensate main drain separately at each row. With this design the steam is fed in series to eachrow further enhancing the prevention of airbinding in the first row,typically the air in contact with the second row will be above freezingand not be a cause for condensate freezing concerns.Thermofin has also developed other designs that are the resultof combining the aforementioned concepts. Thermofin’s strengthis the development of heat exchanger solutions that match andexceed the unique needs of your operation.SpecificityType AFZ
Excellencein every aspectRobustnessFrequently used in industrial processes that put equipment such as heat exchangers to the test,Thermofin’s ISTEAM coils are designed to last.In fact, our famous extruded aluminum finnedtubes render our steam coil heat exchangersextremely resistant and capable of attainingsuperior heat transfer duties. The fin tubes caneven be cleaned with the use of high-pressurewater jets, without damaging the fins!Fin tube section viewThrough its mastery of every aspect of the design andfabrication of extruded aluminium finned tubes, Thermofinhas achieved the development of numerous geometricalfin tubes configurations (fin pitch, diameter and thickness).With this unique know-how, Thermofin and the end user willtogether be able to select the perfect Thermofin product thatwill conjugate ideally performance and maintenance.5 fins per inchIn addition to a fully weldedassembly, the use of thickplates for the casing andthe headers reinforcesthe robustness of ourexchangers.The service life of a steam coil is not only dependent onthe quality of its fabrication but more importantly of themanner of its installation. Accordingly, the adequacyof its connections and attachments as well as thedrainage and trapping design must respect the secretsof the trade in order to insure proper evacuation ofcondensate and noncondensable gases. Withoutadequate installation, corrosion and erosion may attackinternal parts of the unit, resulting in premature failure.In the event of steam exhibiting high corrosiveness thatcannot be inhibited by the introduction of chemicaladditives, the selection of stainless steel or otherspecial alloys could help preserve the integrity ofthe heat exchangers.14 fins per inchAs with any other Thermofin heat exchanger, theISTEAM steam coils are constructed in accordance withthe highest standards of the industry, they may beregistered with the local jurisdiction (CRN), stampedper ASME or designed to exceed any particular end userspecifications.
FlexibilityOptionsTo better suit your exacting needs, Thermofin offers an array of options such as:Air-tight construction: This option is usually needed when the airside pressureis higher than the ambient conditions of the site.Drawer type: The design of a casing that incorporates the concept of a drawerthat contains the exchanger simplifies maintenance and replacement of the unit.No need to disassemble the air ducts to remove the steam coil heat exchanger!Exterior surface protection: special coatings (‘‘Heresite’’, hot dip galvanizing,special paint, etc.) that help protect the fins and/or the heat exchanger’s casingfrom corrosive awer optionApplicationsAir preheaters for industrial boilersHeating coils for pulp and paperprocess dryingHeat recoveryWood drying coilsRoom comfort heatingAll types of dryersChemical process heating
The heat exchangespecialistSince 1993, Thermofin has designed,manufactured and marketed a large rangeof high quality exchangers for industrialprocesses. Over the years, Thermofin hasbecome one of North America’s leading namein thermal exchange. Through its expertise andits dedicated workforce, Thermofin willalways offer you the right exchanger: the onefor sustainable exchanges .EOLIA: Industrial air cooledheat exchangerITEX : Gasketed plate heat exchangersELECTRA: Generator and motor coolersCALEOS : Shell & Tube heat exchanger47, Marie-Victorin Blvd. CandiacQuebec, CanadaJ5R 1B6Tel.: (450) 444-4405Fax: (450) 444-7745E-mail: thermofin@thermofin.netwww.thermofin.netThis document is not legally binding. As part of its policy of continual improvement, Thermofin reserves the rightto make any technical modifications it feels necessary without prior notification.
Consequently, the type VC steam coils always have both their inlet and outlet connections at the same end of the coil. Installation may be hori-zontal or vertical. This type of coil is also ideal for conditions of operation with superheated steam. Type VC Type AFZ The Type AFZ steam coils represent the best choice for prevent-
