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One Day National Workshop on Common Effluent Treatment Plants CII - Sohrabji Godrej Green Business Centre, Hyderabad. Energy Efficient Turbo Blowers for Aeration Kiron C. Pande - Godrej & Boyce Mfg. Co. Ltd. Technical Session II: Treatment Technologies & Monitoring. 23 November 2012 .
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One Day National Workshop on Common Effluent Treatment Plants CII - Sohrabji Godrej Green Business Centre, Hyderabad Energy Efficient Turbo Blowers for Aeration Kiron C. Pande - Godrej & Boyce Mfg. Co. Ltd. Technical Session II: Treatment Technologies & Monitoring 23 November 2012 company presentation 2012
PD Volumetric Turbo - η Increase over 10% Low speed Turbo High Speed Turbo • ηIncrease over 20% • Increase stability Direct driven High Speed High Gear Ratio Roots blower Multi stage Turbo blower Multi stage Turbo blower Blower Efficiency Increased over 40% Increasing Energy Efficiency - η Increase over 10% - No Volumetric pulsation
Energy Efficiency certified by: Korea Energy Management Corporation
User selectable Control Modes with KTurbo • Constant Flow • Constant Pressure • Constant Power • D.O. Control
User Selectable Control Modes Constant Current Mode Constant Pressure Mode Constant Flow Mode
Core Components & Salient Features • Permanent Magnet Motor: a) Power required only to rotate & not for magnetizing of rotor; b) Can be started & stopped any number of times; c) High Efficiency even at part load • No Gear Box: No transmission loss due to direct drive & no lubrication required. • Variable Speed Drive for achieving high speed, smooth starts (reduced starting current) & energy efficient capacity control as part of the Blower package. • Air Foil bearing for high speed operation (used in Jet engines) • Oil Free air • Low Noise: 80 dB against 100 dB of PD blowers • Entire range is air-cooled & no need of water for cooling.
PD Blowers Performance • Typical model at 1800 RPM; Average total efficiency is 45%
Aeration: Coca Cola (Korea) (Benefits with KTurbo ) 1) Discharge Temperature : Less than 20° C than Roots type. => Change Aerated water temperature: less than 3 ℃ than with Roots blower used earlier 2) Capacity control : Operating 1㎥/min => Protect for excessive aeration 3) Oil-less System => 100% oil-less air 4) Reduce energy consumption: more 40% (Before using roots blower) 5) Noise level : 82dB @ 1m (as against earlier 105dB with Roots blower)
SunRiver: North America installation • Before : • 2 Units of 100hp Multi Stage • After: • 1 Unit of TB100-0.8 (70% Operation)
Control Configuration for DO (Dissolved Oxygen) Intrinsic Feedback control HMI Display Flow Control DO data ( 4 ~ 20mA) ※ DO Sensor (Endress+Hauser Co.) Input: 0.015 ~ 60 ppm Output: 4 ~20mA
Intake Silencer BOV Silencer Power In Inverter Controls Construction of Single & Twin Turbo Blowers / Comp
High performance electric core 2 Pole permanent magnet (SmCo) with high strength retaining ring H Class Insulation winding Discharge PM Motor& Impellers Scroll Stainless steel casted Impeller Radial airfoil bearing Intake Radial airfoil bearing Thrust disk & Thrust bearing
Core Technologies (1) Air foil bearings • Self-acting hydrodynamic float on air • Bump foil acting as a spring • The first generation • Axially & circumferentially uniform elastic support elements • The second generation • Variable axial OR circumferential compliance characteristics • The third generation • Foil support in axial, circumferential AND radial direction
History of Foil Bearings Third Generation Bump (KTurbo) • High Temp Solid Lubricant • PS304 ; NASA • KOROLON1350F ; MiTi Multi-Pad Bump MoS2 Reversed Multi-Layer • Radial variation • Circumferential variation • Axial split/variation Teflon-S Simple Bump • MiTi have made major research • KTurbo has > 1000 units experiences • KTurbo has TC series Multi-Leaf High Capacity, High Speed, High Damping, High Temperature
Core Technologies (2) High-speed & high-power PM motor/driver • PM motors • High-speed & high-power (50 hp ~ 600 hp / 20,000 rpm ~ 70,000 rpm) • High efficiency (> 95%) • Sensor-less Inverters • Cost-effective • High efficiency (> 97%)
Why PM motor ? • No magnetizing power is necessary • Lower heat generation means less cooling loss. • Smaller rotor means less friction loss • No slip means high efficiency even at part load condition.
Core Technologies • Stainless Steel • SUS630, 17-4PH • Optimum Specific Speed • Maximum efficiency • Optimum back sweep angle • Maximum efficiency • High Rise to surge • Wide operating range • Splitter Blade • Larger flow capacity • Higher efficiency • Leaning • Higher structural strength (3) Features of KTurbo Impeller
Built-in Flow Meter Bell mouth is more accurate than Orifice, because it needs only one sensor.
Discharge Duct Discharge pressure : P Discharge Temp : T2 Blow-off Valve Silencer Suction Flow rate dP : dP3 Suction Temp : T1 Filter Pressure Drop : dP1 Blower core Inverter Air Flow measuring Measurement System Air out Inlet Reducer < Air Flow calculation, Q > Q ≈ Q (T1, Po , dP3) Air in Impeller + T1 dP3 [Differential pressure]
HMI: Data Logged every second • CF memory is applied • Data logging every 1 sec, 1 min, 1hour • All event recording
HMI: On-line trend display • CF memory is applied • Data logging every 1 sec, 1 min, 1hour • All event recording
CCR (Central Control Room) SCADA or DCS or PLC MCP1 MCP2 TB #1 TB #2 TB #3 TB #4 TB #1 TB #2 TB #3 TB #4 Multi-Group Control
Foundation Concrete pad Anchor bolting case-1 Anchor bolting case-2
Thank You! Godrej & Boyce Mfg. Co. Ltd. Compressed Air Solutions Godrej | Electrical & Electronics Pirojshanagar, Vikhroli, Mumbai – 400079. India Tel.: +91-22-67962251 to 2255 Fax: +91-22-67961410 / 67961525 E-mails: kcp@godrej.com; jayraj@godrej.com; roshe@godrej.com; www.godrej-airsolutions.com