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Plate Heat Exchangers Introduction

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Plate Heat Exchangers Introduction Plate heat exchangers Introduction Energy Saving. Condensation. Recuperator heat recovery units offer Plate-type exchangers do not allow for various possibilities for energy saving the passage of humidity from one flow and an alternative for reducing energy to another, but can transfer part of the costs and atmospheric pollution. latent heat contained in the wet exhaust air-flow; this happens Characteristics. especially when external temperatures Heat-exchangers are exchangers that are very low, so that the supply air enable heat to be transferred between cools the wet exhaust below its dew the input and the output air-flows based point and condensation is formed. on the difference in temperature. Recuperator offer two series of static plate exchangers (Series B and F) and a rotary exchanger series (Series T), whose characteristics meet the require- ments of both the industrial and the non-industrial markets. Reliability and High Performance. The plate type are air-to-air heat- exchangers that have no moving parts, offering very high reliability and performance; in addition, they make for low energy consumption in associated boiler equipment. The heat is transmitted directly from the higher to the lower temperature-flow; the air-flow pattern is of cross-flow design, and the exchanger's efficiency is between 40 and 75%. Sealing. This type of heat-exchanger consists of flat plates with swirl control, whose spacing depends on the type of application. The exhaust and supply air-flows are completely separated by means of special seals. Materials. The plates are usually made of aluminium, due to the latter's corrosion- resistance, ease of manufacture, non- inflammability, and durability. In special cases, such as the presence of corrosive parts, the aluminium can be coated with anti-corrosion paint, while, in the case of high operating temperatures or special applications, stainless steel alloys are used. 1 Quality It is Recuperator's constant aim to maintain the highest standards of quality. Stated performance figures are certified by tests carried out in accordance with Eurovent rules by independent organizations such as Technikum of Lucerne (Switzerland) and Istituto Ricerche e Collaudi Masini of Rho (Milan). The quality and performance of Recuperator products are guaranteed by a well-equipped research laboratory and an ASHRAE wind-tunnel, where tests are conducted periodically on product lines. All supplies of aluminium coils are checked and tested using our Erichsen test equipment, in accordance with DIN Standard 50 101. Checks are repeated during and at the end of the manufacturing process so that the physical characteristics of the materials used are continuously monitored. 2 Examples of Applications The table gives a few examples of applications relating to series and materials used by Recuperator. Areas Series Material Application Air-conditioning B Aluminium Pre-heating and pre-cooling Ventilation F in the air-handling units Schools B Aluminium Heat recovery from air renewal (B Aluminium) Swimming-pools B Coated aluminium Pre-heating of air in air-handling units F Hospitals B Aluminium and Heat recovery from the exhaust air without F stainless-steel mixing of the two air-flows Telephony B B Aluminium and Heat dissipation inside shelters and mobile coated aluminium telephone cabins Railways B Aluminium Heat dissipation inside converters for air- F conditioning in railway carriages Ventilation hoods B B Aluminium and Heat recovery from flue gases for heating F coated aluminium premises Dryers B Aluminium and Pre-heating of air inside dryers and heating of F stainless-steel premises Rotogravure printing machines B Aluminium and Heat recovery from solvents and heating of F stainless-steel premises Heat recovery from flue gases B Stainless steel Heat recovery for pre-heating the air at entrance F to burners and heating of premises 3 Product Code F x AL 07 N 090 M T SC BP25 F=SeriesF=Series 090=090= NNetet lengthlengthg of finnedfinned B unit(cm)unit(cm) (step(step 10 mmmm)) F x=Tradingx=Trading groupgroug p M=SpacingM=Spacing betweenbetween platesplates C:C: Close-fittingClosose-fifitttting M:M: MediumMeMeddiumm L:L: LargeLaLargrge AL=AL= PlatePlate matermaterialial T=VersionT=Version AL:AALL:A: AluminiumAlluumimininiumum T: StandardStandard ACAAC:C:C: C Coatedoaoateted alaaluminiumlumuminium SS:: S Stocktock cubes I6II6:6:A: A AISIISISI 331316L16L6L 07=Model SC BP25=OptionsBP25=Options fromfrfroom 0202 toto 2424 general information by-passby-pasa s fforor specifications see PPageaagge 8 forfofor spsspecificationspeeccificatioonss seeseee Page 9 SC BSBS SM BPBP NNSS BZBZ TV BC XS BA AZ BB CP BL CS BV RF BP.. BP.. N=Temperature ranges N: -30°C+90°C polyurethane/epoxy resin D: -30°C+150°C silicon/epoxy resin V: -30°C+200°C silicon/epoxy resin X: -30°C+280°C silicon Y: -30°C+500°C refractory silicon 4 Options Recuperator offers a series of options for differing requirements. Series XS TV AZ SM SC CP NS CS RF B 4 1 AL/AC F 2 AL/AC B 1 3 I6 F 2 3 I6 1 :standard version for Series B 2 :standard version for Series F 3 :not available for the “Y” temperature range 4 :standard version for models 02 and 03 XS SC NS Greater resistance to differential Extra sealing to ensure closer fit of the Version using other sealants instead of pressure. two air-flows (example: application for silicon. Available for temperatures of up hospitals). A leakage diagram can be to 90°C (temperature range “N”). TV had on request in this version. The frame is coated when the heat- exchanger frame is exposed corrosive AZ substances. CS Side in thinner aluminium. Special corner sections to make SM diagonal fitting easier. Mechanical sealing of the exchanger RF unit. A leakage diagram in this version Reinforced frame for lager, heavier can be had on request. CP heat-exchangers. Top cover with bevelled corners to reduce the diagonal dimension. CS Option CP Option (B series) CP Option (F series) 5 By-pass Options Recuperator provides a series of By-pass options to meet various requirements. All the By-pass options are valid from Model 03. Series BS BZ BP BCBA BB BL BV BP..BP.. B F BS BC BL Lateral by-pass without a damper. In this version, the by-pass section is in Lateral by-pass with short damper for a central position. inside shaft. BZ Central by-pass without a damper. BA BV Lateral by-pass with a damper and Lateral by-pass with vertical-blade installation of the servomotor inside the damper. BP treatment unit. Lateral by-pass with damper, used to regulate the power exchanged in the BP..BP.. heat-exchanger; the dampers are BB Double side by-pass with damper. mounted on the exchanger frame and Central by-pass with damper and designed so as to give the same installation of the servomotor inside pressure drop as the heat-exchanger. treatment unit. 6 Special Applications The air-flow direction is of no real importance. However, it is recommended that the exhaust air pass through the heat- exchanger from the top towards the bottom in cases in which the formation of condensation is to be expected. Some examples of the behaviour of the two air-flows, using a single heat-exchanger. In special cases, it is possible to use several heat-exchangers to overcome inconveniences such as: lack of space, a major difference between the two flows, etc. The drawings show a few examples. 7 A series Application -Air Conditioning and Heating -Swimming pool and Hospital -Replacement with recovery Dimensions Depending on the various options introduced, the size may vary from those shown. Please contact Recuperator for correct evaluation Model B1 A1 mm (in) mm (in) 02 200 (7.87) Max 500 (19.68) Coming soon 03 300 (11.81) Max 500 (19.68) 04 400 (15.74) Max 500 (19.68) Coming soon 05 500 (19.68) Max 500 (19.68) Coming soon 06 600 (23.62) Max 500 (19.68) Coming soon Performance Performance indicative; for correctly selection, use Recuperator's Rex selection program Model Max flow rate DP h m³/h (CFM) Pa inWC % 02 03 600 (355) 100 (0.4) 75.00 04 05 06 Recuperator S.p.A Rescaldina (MI), Italy www.recuperator.eu www.recuperatorusa.com B series Application -Air Conditioning and Heating -Swimming pool and Hospital -Industrial ventilation -Replacement with recovery -Spray booth Dimensions Depending on the various options introduced, the size may vary from those shown. Please contact Recuperator for correct evaluation. Model B1 A1 mm (in) mm (in) 02 200 (7.87) Max 700 (27.55) 03 300 (11.81) Max 900 (35.43) 04 400 (15.74) Max 1200 (47.24) 05 500 (19.68) Max 1300 (51.18) 06 600 (23.62) Max 1400 (55.11) 07 700 (27.55) Max 2000 (78.74) 08 800 (31.49) Max 2000 (78.74) 14 1400 (55.11) Max 2000 (78.74) 16 1600 (62.99) Max 2000 (78.74) Performance Performance indicative; for correctly selection, use Recuperator's Rex selection program Model Max flow rate DP h m³/h (CFM) Pa (inWC) % 02 1500 (882) 130 (0.52) 50.00 03 3555 (2092) 180 (0.72) 52.50 04 7000 (4120) 250 (1.00) 50.50 05 9500 (5591) 260 (1.04) 50.50 06 11500 (6768) 280 (1.12) 55.50 07 20000 (11771) 300 (1.20) 52.00 08 22500 (13243) 300 (1.20) 52.00 14 38000 (22366) 300 (1.20) 60.00 16 42000 (24720) 300 (1.20) 60.00 Recuperator S.p.A Rescaldina (MI), Italy www.recuperator.eu www.recuperatorusa.com F series Application -Air Conditioning and Heating -Swimming pool and Hospital -Industrial ventilation -Replacement with recovery -Spray booth Dimensions Depending on the various options introduced, the size may vary from those shown.
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