Bitzer US Inc.

Bitzer Highlights at Chillventa 2014

Chillventa 2014 visitors can look forward to a whole host of innovations at Bitzer’s trade fair stand (Hall 4, Stand 310 and 408), which measures around 5,400 square feet.

One of the many new products the compressor specialist will be showcasing in Nuremberg is the further optimized CRII capacity control. The system delivers virtually infinitely adjustable capacity control for the Ecoline reciprocating compressors with four, six and – now for the first time – two cylinders.

CRII: low operating costs thanks to efficient compressor control

Depending on the operating conditions and refrigerant, a special control algorithm allows compressors to be infinitely adjusted. With the CRII, Bitzer has achieved an exceptionally wide range of control between 10% and 100% for two-, four- and six-cylinder compressors. The increased switching frequency, however, ensures smaller fluctuations in controlled value, temperature as well as pressure and, in combination with the expanded range of control, optimizes system efficiency.

Volker Stamer, Bitzer director of sales for stationary products, explains, “With the CRII system, we are offering our customers a whole new level of flexibility and supporting customization to suit all possible ECOLINE compressor operating conditions. This increases system efficiency whilst protecting the environment.”

Further steps in efficiently creating refrigeration with CO2 compressors

Bitzer is also always expanding its range of CO2 compressors. With the introduction of the 4PTC-6K model for lower displacements and the 4DTC-25K and 4CTC-30K models for higher displacements, the series for transcritical compressors now ranges from 183 to 1,092 cubic feet of displacement per hour at 60 Hz. Chillventa trade fair visitors can look forward to an expanded product range and a new CO2 series at the Bitzer stand.

World premiere in screw compressors

For the first time, Bitzer is presenting a new, eye-catching open-drive screw compressor in the OS series to the public. The model is based on the tried-and-tested construction of the OS series and, for now, is designed for use with NH3 (ammonia) in medium and low temperature applications. Bitzer therefore offers the refrigeration and air conditioning industry a compressor solution tailored to meet the requirements of industrial applications. Further models for industrial applications are already in development.

Greater cooling capacity with CSVH3 compact screw compressors

The CSVH3 series is a new development in the field of speed-regulated compact screw compressors. Bitzer has added two significantly more powerful larger models to its existing CSVH series. The CSVH37 compact screw compressor has a cooling capacity of 1,878 kBtu/h (+41/122°F) with a displacement of up to 33,902 ft3/h. The larger CSVH38 possesses an impressive cooling capacity of 2,254 kBtu/h (+41/122°F) with a displacement of up to 40,823 ft3/h. Bitzer has developed a new housing size to achieve this level of performance. The series is based on the proven engineering and electronics of the CSVH2 series and has a very wide range of applications, from air cooled liquid chillers to heat pumps.

The CSVW2 is also a compact screw compressor, specially designed for liquid chillers with a low condensing temperature. Its engineering is based on the tried-and-tested CSVH2 compact screw compressor and combines proven strengths with new capabilities at low load conditions. In order to achieve a high coefficient of performance (COP) for this type of application, and thus a good Eseer, Bitzer has integrated a permanent magnet motor. The innovative drive technology is beneficial particularly in liquid chillers with a water cooled condenser. The internal volume ratio (Vi) of the compressor was also adjusted to allow the CSVW2 series to achieve much better efficiency in the lower speed and load range than the CSVH series. Bitzer modified the frequency inverter accordingly.

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