AXICO ANTI-STALL® Axial flow fan Fläkt
AXICO ANTI-STALL® Axial flow fan Fläkt AXICO ANTI-STALL® Axial flow fan Fläkt
FPAC and FPMC axial-flow fans Page 10Examples of control equipmentOperation with one fanThe most common and simplest way of controlling the fan of asupply air system with varying flow requirements is to maintain aconstant pressure in a plenum chamber or in the supply air duct.For the FPAC, e.g. FPAZ-16-bb, see Fig. 1.For the FPMC, e.g. FPMZ-16-bb, see Fig. 2.Exhaust air fans are controlled in the same manner, but with thepressure sensor located in a suction chamber (i.e. the fan room)or in exhaust air duct.Supply and exhaust air systemIt may sometimes be beneficial to control a supply air fan and anexhaust air fan so that the air flows delivered by the two fans followone another.The supply air fan is controlled in the conventional manner, so thatthe pressure in the plenum chamber or duct is maintained constant.By measuring the flow through each fan, the exhaust air fan can becontrolled to follow the supply air fan exactly or with a predeterminedflow differential (see Fig. 4)CompressedairRdRdPXPCAtmosphereIGMSPCAtmosphereIGMeasurement pointFig. 1PC = Pressure controller (with built-in pressure sensor)PX = Pneumatic positioner or electro-pneumatic positioner (see page 9)IG = Integration vesselRd = Reducing stationsFCSupplyair fanFTMSMeasurement pointFTAtmosphereMSPCIGFig. 4Exhaustair fanFig. 2Measurement pointPC = Electronic pressure controller (with built-in pressure sensor)MS = Electro-mechanic actuatorIG = Integration vesselParallel operation of the FPACThis is done by the signal from converter PC (Fig. 1) being branchedoff to the positioners PX of two or more fans.PC = Electronic pressure controllerMS/PX = Electro-mechanic actuator/electro-pneumatic positionerFC = Electronic flow controllerFT = FPAZ-17 Linear electronic pressure transmitter in combination with FPAZ-18IG = Integration vesselSupply and exhaust air systems with parallel fansTwo parallel fans for supply air and two parallel fans for exhaust air(a total of 4 fans) should be controlled by two separate controlsystems.Parallel operation of the FPMCTwo fans can be controlled in parallel by the second fan being onfollower control via a servo controller. The actuators of both fans mustbe equipped with potentiometers (see Fig. 3).AtmosphereSCMSPCIGMeasurement pointMSFig. 3PC = Electronic pressure controller (with built-in pressure sensor)SC = Electronic servo controllerMS = Electric actuatorIG = Integration vessel
FPAC and FPMC axial-flow fans Page 11Fan chartsThe charts are applicable to gas with a density of 1.2 kg/m³ and do notinclude belt drive loss.Arr. 3 and 7 Apply including protective grilleArr. 1 A connection loss of 0.15 x pd must always be added forthe protective grille.Arr. 6 On free inlet fans with FPAZ-21 protective grille, a connectionloss of 0.15 x pd must be addedSymbols used12= fan size and speedq , m³/s (h) = air flow3 ∆pt , Pa = total pressure rise, from the inlet to the entire outlet area4 P, kW = power demand5 degrees = blade root setting angle6 ηt , % = maximum overall efficiency of the fan7 η , % = overall efficiency of the fan8 Lwt ,dB(A) = total sound power level9 Pd , Pa = dynamic pressure in the duct with the same diameter asthe fan outlet10 PdD , Pa = dynamic pressure in the duct with the samme diameteras the outlet of the FPAZ-02, -03 and -25 diffuser11 ∆p1 , Pa = connection loss for a fan of CD-design with FP(A,M)Z-01guide vane diffuser connected to a large chamber12 ∆p2 , Pa = connection loss for a fan with FP(A,M)Z-01 guide vanediffuser and FPAZ-05 air distributor fitted to a duct13 ∆p3 , Pa = connection loss for a fan with diffuser fitted to a large chamber14 ∆p4 , Pa15 J , kg m²= connection loss for fan with diffuser fitted to a duct= mass moment of inertia (=1/4 GD²)3D pt , PaP, kW4D p , Pa2000100000020406080AXICO ANTI-STALL ® 2 q, m³/h x 1000020 40 60 80 100 120 140 160 180FPAC, FPMC 125-6-8n = 1470 rpm 1120 L wti 11820 50808211452°7850°741127045°6511040° 10510810635°30°18°25°20°10303018° 20° 25° 30°q, m³/s35°40°0 10 20 3040 q, m³/sCD50 100 150 200 300 400 500 600 70011D P 1CDJ = 6.1 kg m²i 151213146h t= 83%45°50 100 150 200 300 400 500 60050 100 150 200 250 300 400 50010 20 30 40 501007811650°52°9PdiPdDiD P 2D P 3D P 46005000AXICO ANTI-STALL ® q, m³/h x 1000102030FPAC, FPMC 080-5-8n = 980 rpm014001200AXICO ANTI-STALL ® q, m³/h x 10005 10 15 20 25 30 35 40 45 50 55FPAC, FPMC 080-5-8n = 1470 rpm100040093 L wti800102 L wti300h t = 75%7472Pdi600h t = 75%7472PdiD pt , PaP, kW200100000220°220°25°25°7068656045530°30°35°35°8540°640°8745°45°8950°850°9155°60°PdDi10q, m³/sD pt , PaP, kW4002000004827068656010060°98 55°9650°94 45°40°35°20°30°25°4 6 8 10 12 14q, m³/s20° 25°30°35°40°45°50°55PdDi4J = 3.2 kgm²i0 2 4 6 8 q, m³/s55°60°55°1260°J = 3.2 kg m²i160 2 4 6 8 10 12 q, m³/sD p , PaCD1020 30 50 100 150 200D P 1D p , PaCD2050100 150 200 250 300 400 500D P 1CD1020 30 50 100 150D P 2CD2050 100 150 200 250 300 350 400D P 21020 30 50 50 100 150D P32050 100 150 200 250 300 350D P3510 15D P45 10 15 20 25 30 35 40D P4
- Page 1 and 2: FläktAXICO ANTI-STALL ® Axial flo
- Page 3 and 4: FPAC and FPMC axial-flow fans Page
- Page 5 and 6: FPAC and FPMC axial-flow fans Page
- Page 8 and 9: FPAC and FPMC axial-flow fans Page
- Page 12 and 13: FPAC and FPMC axial-flow fans Page
- Page 14 and 15: FPAC and FPMC axial-flow fans Page
- Page 16 and 17: FPAC and FPMC axial-flow fans Page
- Page 18 and 19: FPAC and FPMC axial-flow fans Page
- Page 20 and 21: FPAC and FPMC axial-flow fans Page
- Page 22 and 23: FPAC and FPMC axial-flow fans Page
- Page 24 and 25: FPAC and FPMC axial-flow fans Page
- Page 26 and 27: FPAC and FPMC axial-flow fans Page
- Page 28 and 29: FPAC and FPMC axial-flow fans Page
- Page 30 and 31: FPAC and FPMC axial-flow fans Page
- Page 32 and 33: FPAC and FPMC axial-flow fans Page
- Page 34 and 35: FPAC and FPMC axial-flow fans Page
- Page 36 and 37: FPAC and FPMC axial-flow fans Page
- Page 38 and 39: FPAC and FPMC axial-flow fans Page
- Page 40 and 41: FPAC and FPMC axial-flow fans Page
- Page 42: Fläkt Woods AB SE-351 87 Växjö,
FPAC and FPMC axial-<strong>flow</strong> <strong>fan</strong>s Page 10Examples of control equipmentOperation with one <strong>fan</strong>The most common and simplest way of controlling the <strong>fan</strong> of asupply air system with varying <strong>flow</strong> requirements is to maintain aconstant pressure in a plenum chamber or in the supply air duct.For the FPAC, e.g. FPAZ-16-bb, see Fig. 1.For the FPMC, e.g. FPMZ-16-bb, see Fig. 2.Exhaust air <strong>fan</strong>s are controlled in the same manner, but with thepressure sensor located in a suction chamber (i.e. the <strong>fan</strong> room)or in exhaust air duct.Supply and exhaust air systemIt may sometimes be beneficial to control a supply air <strong>fan</strong> and anexhaust air <strong>fan</strong> so that the air <strong>flow</strong>s delivered by the two <strong>fan</strong>s followone another.The supply air <strong>fan</strong> is controlled in the conventional manner, so thatthe pressure in the plenum chamber or duct is maintained constant.By measuring the <strong>flow</strong> through each <strong>fan</strong>, the exhaust air <strong>fan</strong> can becontrolled to follow the supply air <strong>fan</strong> exactly or with a predetermined<strong>flow</strong> differential (see Fig. 4)CompressedairRdRdPXPCAtmosphereIGMSPCAtmosphereIGMeasurement pointFig. 1PC = Pressure controller (with built-in pressure sensor)PX = Pneumatic positioner or electro-pneumatic positioner (see page 9)IG = Integration vesselRd = Reducing stationsFCSupplyair <strong>fan</strong>FTMSMeasurement pointFTAtmosphereMSPCIGFig. 4Exhaustair <strong>fan</strong>Fig. 2Measurement pointPC = Electronic pressure controller (with built-in pressure sensor)MS = Electro-mechanic actuatorIG = Integration vesselParallel operation of the FPACThis is done by the signal from converter PC (Fig. 1) being branchedoff to the positioners PX of two or more <strong>fan</strong>s.PC = Electronic pressure controllerMS/PX = Electro-mechanic actuator/electro-pneumatic positionerFC = Electronic <strong>flow</strong> controllerFT = FPAZ-17 Linear electronic pressure transmitter in combination with FPAZ-18IG = Integration vesselSupply and exhaust air systems with parallel <strong>fan</strong>sTwo parallel <strong>fan</strong>s for supply air and two parallel <strong>fan</strong>s for exhaust air(a total of 4 <strong>fan</strong>s) should be controlled by two separate controlsystems.Parallel operation of the FPMCTwo <strong>fan</strong>s can be controlled in parallel by the second <strong>fan</strong> being onfollower control via a servo controller. The actuators of both <strong>fan</strong>s mustbe equipped with potentiometers (see Fig. 3).AtmosphereSCMSPCIGMeasurement pointMSFig. 3PC = Electronic pressure controller (with built-in pressure sensor)SC = Electronic servo controllerMS = Electric actuatorIG = Integration vessel
Change language