Bock at Chillventa 2008 - Energy efficiency and the use of natural refrigerants

People looking at Bock compressor at Chillventa Under the slogan “Objects of Desire”, Bock Kältemaschinen GmbH presented its solutions at Chillventa 2008 in Nuremburg, Germany, from 15 to 17 October.

Over 800 exhibitors and approximately 30,000 visitors made the first edition of this international trade show for refrigeration, air conditioning, ventilation and heat pumps a great success.

Heinrich Reuß, the managing director responsible for sales at Bock, was also pleased with Chillventa: “Our trade show concept and focusing on energy efficiency and natural refrigerants really hit the mark at Chillventa. We were also more than happy with the number of visitors to our stand and the quality of the conversations we had.”

Bock unveiled numerous new products on its stand covering more than 200 square metres.

Expansion of the Electronic Frequency Control (EFC/EFCe) series

Model sitting on Bock compressor at the Chillventa By adding this new product to its established frequency converters, Bock offers the most efficient way of adjusting capacity to particular cooling requirements – including for all semi-hermetic compressors in the HG series now too.

Like the existing EFC systems, the new EFCe systems (optional for HG4, HG5, HG6, HG7 and HG8) are also optimally adjusted to the compressor at the factory and pre-programmed with the necessary control settings. Due to their size, however, they are not directly on the compressor but are instead intended to be set up individually.

The EFC/EFCe systems work consistently at the current power requirement: the precise refrigerating capacity that is needed is produced for maximum cost-effectiveness. Potential energy savings of 25% and more are possible!

Frequency control minimises idle time and smoothes out power fluctuations. This reduces electricity costs significantly and extends the service life of the system by improving the running properties.

Expansion of the CO2 product range

In addition to its RKX radial piston compressor, which is also featured in experimental plants created by numerous partners for both stationary and mobile applications, Bock presented further sub-critical and trans-critical CO₂ compressor models at Chillventa 2008.

In the area of sub-critical compressors for operating pressures to 40 bar, Bock has added four levels of displacement to its range at 40, 50, 110 and 555 cm³.

The range for the HG(HA)2 CO₂ T trans-critical compressor has been extended by levels of displacement of
90 and 130 cm³.

As a result, Bock has one of the broadest offerings of compressors that use CO₂ as refrigerant. In addition, Bock can assist interested customers thanks to the corresponding compressor expertise the company has gained in recent years. Bock continues to see great market potential in CO₂ applications and development over the next few years.

Model with Bock compressor at the Chillventa

ATEX compressors for operation with hydrocarbons

Hydrocarbons were already conventional refrigerants in the 1920s. Following the introduction of CFCs, however, they almost completely disappeared from the market.

In the course of the long-running environmental debate with regard to climate friendly refrigerants, these hydrocarbons are attracting increasing interest alongside CO₂.

Thomas Hagenlocher, the sales manager responsible for stationary applications at compressor manufacturer Bock, reports that “As well as conventional deployment in potentially explosive environments, such as procedural systems in the chemical or petrochemical industries, our ATEX compressors are now increasingly used with hydrocarbons.”

Bock offers semi-hermetic compressors in a special ATEX version. These were designed for use in potentially explosive environments and are certified by TÜV SÜD according to ATEX appliance group 2.

At Chillventa 2008, Bock presented its range of ATEX compressors for use with hydrocarbons, thereby giving interested systems manufacturers another alterative to conventional refrigerants.

Semi-hermetic aluminium lightweight compressors

Model hugging compressor at the Chillventa Based on the successful models of the Pluscom series, Bock also presented its semi-hermetic HG22P and HG34P models at Chillventa in an aluminium version for use in mobile applications.

As a market leader in the area of open aluminium compressors for bus climate control, Bock has decades of experience in mobile applications, which is reflected in the development of these new models.

For example, compared with the standard compressors used in rail applications to date, these new aluminium compressors offer a potential weight saving of around 40%.

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