News
Archive 2009
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BITZER ECOLINE
ORBIT 6 BITZER celebrated 75th Anniversary Protection Devices for Screw Compressors BITZER European Refrigeration Seminar |
March 2012
Tried and tested reciprocating compressors can now be used
in an even more versatile range of ways
• Greater energy efficiency
• Enhanced cooling capacity
• Extended application limits
Sindelfingen, 27.03.2012. At the Mostra Convegno Expocomfort trade fair in Milan, BITZER will be unveiling its extended range of BITZER ECOLINE reciprocating compressors. These compressors can now be used for an even more versatile range of applications. In addition to R134a, many other refrigerants can also be used, e.g. R404A, R407A, R407C, R407F and R507A. With this new range, BITZER has succeeded in leveraging all the benefits of the tried and tested BITZER ECOLINE series for refrigerant R134a for an even broader range of applications, as well as offering its customers significant added value.
The extended BITZER ECOLINE range offers a great many product and efficiency benefits: With immediate effect, the compressors can deliver a 5-6% improvement in cooling capacity in medium temperature applications - and for low-temperature applications, these same compressors provide even more impressive improvements. At the same time, BITZER engineers have succeeded in increasing the coefficient of performance (COP) of this upgraded series by up to twelve percent for high as well as for low condensing temperatures. All compressors impress with substantially extended application limits when using refrigerant R404A and motor version 2 (medium and low-temperature applications), e.g. with condensing temperatures of up to +60°C and an evaporation temperature of 0°C.
Yet another attribute is the tremendous suitability of the new ECOLINE range for very favorable speed control by frequency inverter, a great bonus in terms of system efficiency. Irrespective of that, all 4 and 6-cylinder models can be equipped with cylinder head deactivation and this in turn delivers a very cost-effective form of capacity control. These measures already enable BITZER at this time to meet the foreseeable rise in requirements relating to energy consumption, while also meeting customer wishes for an exceptionally flexible range of compressors.
Versatile application options on a tried and tested platform
Thanks to the scope for using many of the commonly available refrigerants, these compressors cover a wide range of applications, and provide great added value to BITZER customers. BITZER ECOLINE compressors are used, for example, in medium and low-temperature applications in supermarkets, food storage facilities, condensing units, the chemical industry as well as large catering kitchens, the pharmaceuticals sector and in high-temperature heat pumps. All compressors in this upgraded range are based on the successful 2nd generation of semi-hermetic BITZER reciprocating compressors, for many years now a synonym for proven quality, great efficiency and reliability. For this recently upgraded range, BITZER has optimized the know-how gained from the successful ECOLINE series for R134a and made available for the use of other refrigerants. The tried and tested compressor platform has remained the same - which enables the updated BITZER ECOLINE range to completely replace the previous series. There are also no changes in the assembly hole pattern, the suction and discharge line connections and, in almost all cases, the valve position and installation space for the new series, compared to the standard range. This assures universal interchangeability.
In addition to the upgraded compressors in the ECOLINE range and the recently developed ORBIT 6 scroll compressors, BITZER will be unveiling a world first at the BITZER trade fair stand H29 K30.
March 2012
• Ultra-efficient compressors for air conditioning systems and heat pumps
• Compact with a wide application range
• Optimized to achieve lowest possible annual operating costs
• Particularly low sound level
Sindelfingen, 27.03.2012. With the new ORBIT 6 family of scroll compressors, BITZER is attending the Mostra Convegno trade fair with an extended product range offering cooling capacity ratings of between 27 and 51 kW at 50 Hz and different climatic conditions. The five models in the scroll range with displacement ratings of between 20 and 38 m3/h (50 Hz) deliver their convincingly high isentropic efficiency rating across a broad range of applications with low levels of operating noise. That makes ORBIT 6 compressors particularly well suited for use in air conditioning systems and heat pumps.
The design of these compressors is based on refrigerant R410A which provides very high volumetric cooling capacity due to a number of factors, including a comparatively high level of vapor pressure. The compact design of the new series has been made possible by this feature and by using a special version of the Oldham coupling. ORBIT 6 also sets new standards with a level of quiet operation previously never before achieved in this performance class.
All compressors are designed for condensing temperatures of up to 68°C and for the operating point of -20°C / +50°C required for heat pump applications. That makes ORBIT 6 the compressor series with the widest range of applications.
BITZER supplies the models of the ORBIT 6 family of scroll compressors in five performance levels: 10, 12, 13, 15 and 20 hp.
Consistently energy-efficient
The design of ORBIT 6 compressors enables them to deliver consistent performance under full-load and part-load conditions, such as those that arise from the severely fluctuating load conditions and ambient conditions associated with air-conditioning and heat pump applications. This results in very high EER, ESEER/IPLV and SCOP values and correspondingly low annual operating costs.
The design and build of ORBIT 6 compressors are also ingeniously suited for installation in compounding systems. The compressors can be secured directly to corresponding assembly rails. BITZER offers the corresponding assembly kits in its delivery range.
December 2009
BITZER Kühlmaschinenbau GmbH proudly looks back on 75 years of company history.
BITZER Kühlmaschinenbau GmbH celebrated its 75th anniversary with customers, suppliers, journalists, and employees. Since its foundation, the Sindelfingen based company has developed into a worldwide leading manufacturer of compressors, condensers and pressure vessels for the refrigeration and air conditioning industry. The Management Board took a positive stock of the past decades and had an optimistic view for the future despite the current economic crisis.
BITZER Kühlmaschinenbau GmbH was founded as "Apparatebau für Kältetechnik" ("Apparatus Engineering for Refrigeration Technology") by Martin BITZER in 1934, and proudly looks back on 75 years of company history. Besides employees and journalists, also customers and suppliers from all over the world have been invited to the ceremony taking place on 4th of December. More than 300 guests celebrated the memorable jubilee together with Chief Executive Officer (CEO) Peter Schaufler, Senator h. c. Large screens in the „SCHAUWERK Sindelfingen", the former production site of BITZER reciprocating and screw compressors, guided the participants through history: They displayed BITZER manufacturing plants as well as products from the past and the present and brought the past and the future of the company to life. "SCHAUWERK Sindelfingen" is the name of the new museum, where art lover Peter Schaufler will open his collection of contemporary art pieces to the public in June 2010.
Peter Schaufler took over BITZER in 1979 – since then the company has grown continuously and achieved mostly two-digit growth rates. Since October 2008, however, even at BITZER the effects of the economic crisis are noticeable. "The economic and financial crisis has certainly affected our business as well", said Peter Schaufler. "But despite the decline in order income from October to December 2008, the last year was the second best in company history." Since July 2009, the order situation has stabilized – CEO Peter Schaufler anticipates a sales decline of only twenty percent for the running business year versus the previous year. He counts on a recovery next year: "Based on the results of 2009, we expect a growth rate of around ten percent in 2010. Due to cost cutting measures that have already put into effect, BITZER will not have any enforced redundancies in 2010".
The optimism has several reasons: Meanwhile the positive signals from the refrigeration and air conditioning industry are increasing.
And BITZER is back on track for growth again. "Amongst other things, this is due to our strong innovations as well as our ability to recognize and meet the requirements of the market," explained Peter Schaufler. An example, he said, is the development and production of extremely energy efficient screw compressors as well as the usage of natural and environmental friendly refrigerants. "In the future we will keep offering our customers individual solutions and strengthen our market leadership," said Peter Schaufler.
June 2009
SE-C1 has been designed for compact screw compressors of the CSH and CSW series and for semi-hermetic screw compressors of the HS.64 and HS.74 series.
The new optional protection devices SE-C1 and SE-C2 for screw compressors have extended monitoring functions and protect the compressor far beyond the general control functions. In addition to motor and discharge gas temperature, rotation direction and phase failure, the devices also monitor phase asymmetry, switching frequency and oil supply. The status is shown on a code display with up to 29 different operating and fault messages thus facilitating a quick analysis of the compressor status. Furthermore, the devices allow a simplified structure of the safety chain providing additional economic benefit.
The protection devices can be used for voltages from 24..230 V AC +10 %/-15 % 50 Hz and 60 Hz and are suitable for operation with frequency inverters. SE-C1 has been designed for compact screw compressors of the CSH and CSW series and for semi-hermetic screw compressors of the HS.64 and HS.74 series. SE-C2 can be used for semi-hermetic screw compressors of the HS.85 series. The devices are available since beginning of 2009.
SE-C1 monitors:
- CSH and CSW series: motor and oil temperature
- HS.64 and HS.74 series: motor and discharge gas temperature
- PTC measuring circuit
- Wrong rotation direction, phase failure and phase asymmetry (voltage interruption)
- Maximum switching frequency
- Oil level (only CSH and CSW compressors)
- Oil flow (only HS.64 and HS.74)
SE-C2 monitors:
- HS.85 series: motor and discharge gas temperature
- PTC measuring circuit
- Wrong rotation direction, phase failure and phase asymmetry (voltage interruption)
- Maximum switching frequency
- Oil supply
- Oil stop valve
Please refer to the Technical Information ST-121-2 for further details.
February 2009
Alexander C. Pachai, Business Development Manager at Johnson Controls Inc. Denmark
Alexander C. Pachai, Business Development Manager at Johnson Controls Inc. in Denmark, took part in the BITZER European Refrigeration seminar held from February 11th – 13th. In his daily work he is focused on the use of natural refrigerants. In this interview he speaks about his motivation to attend the BITZER seminar in Sindelfingen, Germany.
You have been Business Development Manager at Johnson Controls Inc. in Denmark now since April 2000. What is your daily work all about?
Alexander C. Pachai: I’m focused on the use of natural refrigerants, mainly CO2 and Hydrocarbons as well as Ammonia. On top of that I’m also heavily involved in exploring how to get over R22. This is an enormous task for the manufacturers! At the moment I can’t imagine that we will be able to make it in the required time. In my opinion many companies still have not realized in time that they have to find an alternative for R22.
How many times have you taken part in the BITZER seminars during your work for Johnson Controls?
Alexander C. Pachai: I have been to Sindelfingen twice for a seminar: Last year I took part in the CO2 seminar as well.
Why did you come here this year for the similar CO2 seminar again?
Alexander C. Pachai: Because there is always something new to learn! BITZER introduces new contents and information in the seminar all the time as well as new techniques of presentation. And another main important reason is the communication with colleagues from all over Europe of course.
What was the biggest benefit you got from the seminar?
Alexander C. Pachai: Each seminar broadens my horizon for my daily work. I can use the knowledge and learn more about how to use natural refrigerants. Besides that I’m writing a reference book. This is a private project and I learned a lot about how to present complex information in a way people understand.
Would you recommend the BITZER seminars?
Alexander C. Pachai: Of course! It’s a good way to get new and serious knowledge about the use of natural refrigerants, chillers working with hydrocarbon, PED approved regulation and so on. Right now is just the perfect moment to get more knowledge about all this.
You said, industry has to get over R22. What do you think: Which refrigerant will be used in the future?
Alexander C. Pachai: That’s really difficult to say! If I look ten years ahead I think the number of synthetic refrigerants will be limited. One reason is the discussion about our climate. It’s an easy way for politicians to say ‘away with the synthetics’. On the other hand even the manufacturers think that synthetic refrigerants will disappear more and more. But it’s really difficult to predict the future. We will see what happens.