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VARISPEED Reciprocating Compressors
BITZER information – VARISPEED Reciprocating Compressors Germany, 23th of November 2010
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Topic VARISPEED Enlargement product range Features Availiability
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OCTAGON VARISPEED Example for a conventional system:
Four compressors in On/Off operation without inverter Get operation cost savings with inverter; to= constant
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OCTAGON VARISPEED F1 F1..F4 inverters have: F3 + F4
Inverter designation F1 F3 F4 Existing Model Higher Inverter Output current F1 Inverter housing F1..F4 inverters have: / Same wiring logic: Run signal, alarm relay ... / Same control signals: 4..20mA or 0..10V New Model F3 + F4 Inverter housing
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OCTAGON VARISPEED R404A R134a C4 Compressors (4V-4N)
R404A : Bigger inverter (F4) + Standard Comp. (Motor 1) -> 4NCS-20.F4Y R134a: Smaller inverter (F3) + ECOLINE Comp. (Motor 2) -> 4NES-12.F3Y
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OCTAGON VARISPEED Product range enlargement (red):
R404A, R507A , R407C, R22 R134a VARISPEED Max. Cooling Capacity* 2DC-3.F1Y 10,8 kW 4FC-5.F1Y 14,6 kW 4EC-6.F1Y 18,4 kW 4DC-7.F3Y 21,9 kW 4CC-9.F3Y 26,7 kW 4VCS-10.F4Y 28,3 kW 4TCS-12.F4Y 34,3 kW 4PCS-15.F4Y 41,2 kW 4NCS-20.F4Y 47,6 kW VARISPEED Max. Cooling Capacity* 4DC-7.F1Y 13,2 kW 4CC-6.F1Y 15,9 kW 4VES-6.F3Y 16,4 kW 4TES-8.F3Y 19,6 kW 4PES-10.F3Y 23,0 kW 4NES-12.F3Y 26,6 kW * 87Hz ; SST=-10°C; SDT=+45°C; 20°C suction gas temp. ; without liquid subcooling
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VARISPEED CO2 Product launch:
OCTAGON VARISPEED CO2 transcritical application VARISPEED CO2 Max. Cooling Capacity* 4MTC-10.F4K 22,3 kW 4KTC-10.F4K 33,3 kW * 87Hz; to=-10°C; tGC=+35°C; pHP=90bar; Dtoh=10K
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OCTAGON VARISPEED New VARISPEED Series Winning Features
23,7 up to 99,2 m3/h* Enlargement VARISPEED R404A product range New ECOLINE VARISPEED R134a series New VARISPEED CO2 Series Winning Features Optimized motor-inverter combination delivery ex works enables Simple installation and commissioning Maintenance free due to suction gas-cooling Wide speed range 25…87Hz * Basis: 87 Hz
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OCTAGON VARISPEED Optimized motor inverter combination
VARISPEED Motor: 230V D-connection (40S) Enable full motor torque also between Hz Motor operates in the complete frequency range within the optimum voltage/frequency ratio - No motor efficiency drop with trans-synchronous mode Increases cooling capacity by 70% with same compressor dimensions 40S Motor allows operation without inverter (Y-connection, 400V-3-50Hz supply)
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OCTAGON VARISPEED Winning feature: Suction gas-cooling
Outstanding operating safety Steady inverter cooling even at high ambient temperatures Full output current even at high ambient temperatures (no derating) No malfunction of inverter fan possible Maintenance-free inverter No air cooled heat sink used therefore no drawback by dirt on heat exchanger surface
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OCTAGON VARISPEED Competitors with air-cooled inverter
Reduced output current capability at higher ambient temperatures Derating effect Reduced life-time of power parts at high ambient temperatures 40% less inverter current ! - Significant drop of motor torque - Blocked motor situations at peak load
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OCTAGON VARISPEED Winning feature: Improved EMC behavior
Rock-solid full aluminum inverter housing Pre-assembled shielded connection cable between inverter and compressor -Short cable leads to reduced distortion New: All VARISPEED compressors with aluminum terminal box as standard No additional EMC measures required !
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Prospective Availability
OCTAGON VARISPEED Prospective Availability / Ready for field test deliveries R134a: 4NES-12F3Y or 4PES-10.F3Y NOW R404A: 4DC-7.F3Y NOW C4 VARISPEED Q1/2011 CO2 : C3 VARISPEED Q1/2011 Documentation / New brochures: KP VARISPEE D R404A+R134a KP VARISPEED CO2
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