BITZER

An overview of the benefits of the new BITZER Advanced Header Technology:

• Only one suction line for many compressor combinations without an individual combination of restrictor washers
• Reliable functioning at high and low suction gas volume flows
• Uneven capacity adjustment through different displacements in the unit
• Different compressor housing sizes (GSD6 and GSD8) in one unit
• Less warehousing, simpler installation and error prevention in the production of multi-compressor units.

BITZER compressors for transcritical cycle CO₂ applications have been used very successfully for over twelve years. The new 2 and 6 cylinder models have expanded this series even more and have further developed it, opening up an even wider spectrum of applications while providing the highest energy efficiency and operating reliability.

BITZER meets the high demand for climate-neutral solutions for cooling and air conditioning applications with its CO₂ compressors. With its comprehensive product range, the compressor specialist offers the right product for every customer. At Chillventa BITZER will present VARISPEED model 4MTC-10.F4K with a built-in frequency inverter: its optimised capacity adjustment with seamless speed regulation guarantees maximum system efficiency, including under partial load.

At Chillventa, BITZER presents the CSVH3 series for highly efficient water chillers for industrial heat pumps and air conditioning, as well as process cooling. The speed-controlled compact screw compressors with built-in frequency inverters boast high output and improved energy efficiency under full and partial load (ESEER statistics).

This series is based on the proven engineering, motor technology and electronics of the CSV series and has a very wide applications range, from air-cooled chillers for air conditioning and process cooling to heat pumps. The CSVH3 series with an integrated refrigerant-cooled frequency inverter offers maximum seasonal energy efficiency and a wide capacity control range. The robust engineering of the screw compressor in combination with active monitoring of the application limits optimises the highest operational standard in reliability whilst also providing system operators with an overview of all relevant operating parameters.

The compact screw compressors from the CSVH3 series are especially suitable for systems that frequently operated under part-load. These compressors achieve also impressively high full-load efficiency and significantly improved ESEER/IPLV and SCOP values. With an ESEER value of over six in air-cooled chillers for air conditioning, the CSVH3 series is setting new benchmarks in the industry.

BITZER is continuing to enhance its well-known ECOSTAR condensing units with capacity-controlled ECOLINE VARISPEED compressors. There are three model versions of the LHV5E and ten instead of the previous six of the LHV7E. Both series have an improved mini-channel condenser, which means they require less refrigerant charge, while at the same time being more efficient than the previous series.

The new series meets the efficiency requirements of the EU Ecodesign Directive 2015/1095 that came into effect in July 2016. The new ECOSTAR condensing units also feature particularly energy-efficient EC fans, quieter operation, robust weatherproof housing and individually customisable regulators with Bluetooth and a Web server.

The output of the fans and the internal ECOLINE VARISPEED compressor are seamlessly adjusted based on the system conditions, enabling energy-optimised operation with low switch cycles. The new condensing units also boast reliable mileage and low maintenance. Devices can be quickly installed on-site thanks to the control electronics already being wired in the factory, making them immediately ready-to-operate.

The large capacity range and built-in adjustable control open up diverse fields of application for refrigeration systems. Thanks to BEST and BITZER software, it is easier than ever and of significant benefit to operate and monitor the system, log data and remotely access the regulator. 

The new VARIPACK product series of frequency inverters is designed for safe and easy capacity control and was specially adapted to suit refrigeration and operation of BITZER refrigeration compressors. After intuitive commissioning, the frequency inverters take over the control functions of the refrigeration system. Optimised adjustment to suit the system’s current cooling demand reduces energy consumption as well as running costs. With its modular design, the VARIPACK series achieves a high degree of flexibility and opens up a wide spectrum of variants for a large application range in supermarkets, hotels, restaurants as well as food production and processing centres. The series is suitable for refrigeration systems, air conditioning systems and heat pumps and can be integrated both in single compressors and in compound systems.

VARIPACK frequency inverters can be operated in two modes: the compressor capacity control either depends on an external set point signal or on the evaporation pressure with an optionally available add-on module for pressure control. In addition to direct control of the evaporation pressure, the condenser fan can also be regulated via a 0–10 V output signal and a second compressor can also be switched on. The frequency inverters can either be integrated completely in a switchboard or mounted via push-through installation as desired. With the second option, smaller switch boards are sufficient because the heatsink protrudes out of the switch board, causing most of the generated heat to be directly dissipated outside. This means that a switch board fan is no longer required.