CO // SEMI-HERMETIC 2 RECIPROCATING COMPRESSORS

1 CO2 // SEMI-HERMETIC . RECIPROCATING COMPRESSORS . 50 Hz // KP-130-10 EN. TRANSCRITICAL APPLICATIONS. WITH IQ MODULE. ECOLI N E // ECOLI N E+ // VARISPEED. BITZER Innovation Targets SEMI-HERMETIC RECIPROCATING COMPRESSORS for CO2. Products for refrigerants with low greenhouse Content Page warming potential (GWP). ECOLINE series for // for naturally appearing substances transcritical CO2 applications 3. // for new refrigerants like R1234yf, R1234ze(E) and ECOLINE+ series for low-GWP-blends transcritical CO2 applications 4. These refrigerants reduce the direct contribution of ECOLINE VARISPEED series for refrigeration systems to global warming. transcritical CO2 applications 5. Accessories 6. Products with high efficiency in full and part load Application limits 8. // Efficiency improvements of motor and mechanics // high system efficiency in part load operation Performance data 9.

2 By optimised mechanical capacity regulation by specially developed frequency inverters Technical data and performance data 11. This reduces the indirect contribution to global warming Dimensional drawings 13. by saving energy. Simple handling and serviceability with advanced Introduction electronic modules The refrigerant R744/CO2 is used in many commercial and industrial refrigeration systems, as well as in heat // Electronic components for pumps. Data logging Capacity regulation The ECOLINE COMPRESSORS for transcritical applications Actuation of accessories are developed for medium temperature applications, // Unified user software for simple configuration. heat pumps, heat recovery, and as parallel COMPRESSORS Choose compressor or condensing unit and in booster systems, and are also suitable for similar refrigerant.

3 Ready. applications. This makes it simple to fully utilize the efficiency potential of our products and optimise operation. 2 KP-130-10 EN. ECOLINE series for transcritical CO2 applications BITZER COMPRESSORS for transcritical CO2 applica- // Optimized oil management tions have been used worldwide since 2004 with great // Quiet and low vibration success. The 2-, 4- and 6-cylinder COMPRESSORS allow a wide range of applications, providing highest ener- // Particularly well suited to the operation with gy efficiency and operational reliability. By using new frequency inverter in order to increase and control ECOLINE housings with flow optimized suction and capacity discharge gas channels and high efficient motors, Standard speed range: BITZER can offer an optimum efficiency for all CO2 2 MTE.

4 2 KTE: 30-75 Hz applications and markets. 4 PTC .. 4 DTC: 25-70 Hz 4 CTC: 25-65 Hz 6 FTE .. 6 CTE: 25-70 Hz Highlights and technical features // High energy efficiency suction gas-cooled motor very suitable for speed // The capacity range covers displacements from regulation m3/h to m3/h very efficient working valves, special drive gear // Housing with high pressure strength and no bottom geometry plate. Maximum permissible pressure levels: cylinder heads with separate, thermally isolated High pressure side 160 bar high and low pressure chambers Low pressure side 100 bar // Wide application range // Wear-resistant drive gear with further developed in commercial and industrial refrigeration, air multilayer bearings condition and heat pump systems Capacity range ECOLINE series m /h 3. 40. C5.

5 Displacements (50 Hz). 35. 30 C4. 25. 20 C3. 15 C2. 10. 5. 0. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. E. T. 4F. 4C. 6D. 6C. 2M. 2K. 4P. 4M. 4J. 4G. 4D. 4K. 4H. 6F. KP-130-10 EN 3. ECOLINE + series for transcritical CO2 applications SEPR comparison 4,5. BITZER ECOLINE + provides the highest possible 160000. eco-efficiency. The natural refrigerant CO2 is combined 4. 140000. with highest efficiency. smart electronics with easy 3,5. application are added. The Line Start Permanent 120000. 3. Magnet Motor (LSPM) improves the motor efficiency 100000. and increases the seasonal performance. A high 2,5. 80000. seasonal performance reduces the TEWI (Total kWh/Year 2. SEPR. Equivalent Warming Impact) and operating costs and 1,5. 60000. thus minimizes the refrigeration and A/C industry's 40000.

6 1. contribution to global warming. 0,5 20000. Annual Energy Consumption [kWh] 0 0. AS LSPM AS LSPM AS LSPM. AS: asynchronous motor Strasbourg Helsinki Athens LSPM: LSPM motor 102473 93497 87003 78919 141036 129421. SEPR (Seasonal Energy Performance SEPR: max. +14%. Ratio). Line Start Permanent Magnet Motor (LSPM). // High efficiency of a synchronous motor due to // The technology combines the higher efficiency of the permanent magnets synchronous motor with the robustness and easy use of the asynchronous motor // Asynchronous (AS) motor start due to squirrel cage rotor // LSPM motors can either be connected directly to the power supply system or be operated with frequency // Rotor of a LSPM motor synchronizes with the inverter (frequency range defined by BITZER). operating frequency, rotor Iosses become zero // lncreased efficiency over wide working range of the // A fast overcurrent protection device is required in motor, see fig.

7 1 order to avoid a demagnetization. // Annual efficiency increasing in the range up to 14%. due to highest improvements in the most common operating area, see fig. 2. 100. %. (%). Relative COP. 100. LSPM LSPM. AS AS. 0 20 40 60 80 100 1,5 2 2,5 3 3,5 4 4,5. Pel in (%) Pressure ratio Fig. 1: Comparison LSPM and AS motor: motor efficiencies versus Fig. 2: COP improvement LSPM compared to AS motor at constant relative power input suction conditions 4 KP-130-10 EN. Capacity range ECOLINE+ series m /h 3. 40. C5. Displacements (50 Hz). 35. 30. 25 C4. 20. 15 C3. 10. 5. 0. U. U. U. U. U. U. U. U. U. U. U. U. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. TE. 4C. 6F. 6D. 6C. 4P. 4M. 4J. 4H. 4F. 4K. 4G. ECOLINE VARISPEED series for transcritical 4D. The stepless capacity control minimizes suction pres- CO2 applications sure fluctuations and cycling frequencies and therefore saves energy costs.

8 Due to the performance characteristics of CO2 systems, an efficient and stepless capacity control is particularly The quality of refrigerated and frozen products or the important. cooling process can be increased as well. Especially For several years, BITZER has been offering its own in single compressor applications the control characte- COMPRESSORS for transcritical CO2 applications with inte- ristics can be significantly improved and for compound grated frequency inverter (FI). systems there are also considerable advantages. Here the controlled compressor takes the basic load and ad- What makes it special: apts the capacity when switching on and off additional COMPRESSORS . This allows a stepless capacity modulati- on of the entire unit over a wide capacity range. // The frequency inverter is solidly flanged on the com- pressor's motor cover.

9 // The suction gas cooling for the power elements of The compressor's running time is optimized by speed the FI ensures an optimum temperature of the elec- adjustment, and in combination with the soft starting trical components and therefore no fan or regular characteristics of the FI the well-known unique maintenance work is needed. ECOLINE reliability is further increased. // Through supersynchronus operation the compressor cooling capacity can be increased by approx. 70%. compared to fixed speed at 50 Hz. Frequency range ECOLINE VARISPEED series 2830. 3030. Operation < 50 Hz partly restricted with high pressure ratios. KP-130-10 EN 5. Accessories IQ MODULE CM-RC-01. The new generation of extended BITZER compressor modules reliably operates, monitors and protects RECIPROCATING COMPRESSORS and communicates with the superior system controller.

10 Sensors and actuators are prewired and preconfigured in the BITZER factory. Option: 4 PTEU .. 6 CTEU. The new, extended protection concept Intelligent actuation of the following components to improve the system efficiency: // Oil heater // VARISTEP capacity control Monitored compressor parameters: // Motor and discharge gas temperature // High-pressure switch // Oil pressure (with the new oil pressure switch). or oil level Diagnosis: // An early warning system signals critical operating conditions // Data log of all digital and analog inputs and outputs // Alarm and warning history Capacity control VARISTEP. // Runtime and Ioad statistics Communication: New mechanical capacity control especially for CO2. // via Modbus (standardized interface) COMPRESSORS . Optionally available only with // via Bluetooth IQ MODULE.