Semi-hermetic Compact Screws CSH-Series SP-170-6
Semi-hermetic Compact Screws CSH-Series SP-170-6
The CSH-Series, including models 65, 75, 85, and 95, are semi-hermetic compact screw compressors designed for high efficiency and flexibility. They are suitable for various refrigerants such as R134a, R407C, and R22, with options for R404A and R507A upon request. These compressors are known for their compact design, energy efficiency, and universal application.
- Energy Efficiency: The compressors feature a high-efficiency profile with infinite or closely stepped capacity control and optimal economiser operation.
- Compact Design: They have the shortest fitting length in their performance class, with integrated shut-off valves and connections.
- Flexibility: Dual capacity control allows switching between 4-stage and infinite capacity control without retrofitting. Suction and discharge connections can be rotated in 90° increments.
- Optimisation for R134a: The series is specifically adapted for R134a with extended capacity and application range, high efficiency, and smooth operation.
- High-Efficiency Profile: Features advanced geometry, high stiffness, and a patented manufacturing process for precision and high tip speed.
- Double-Walled Rotor Housing: Provides stability and sound attenuation, preventing expansion even at high pressures.
- Durable Bearings: Includes robust axial tandem bearings with pressure unloading.
- Large Volume Motor: Offers high efficiency with integrated PTC sensors and options for different starting methods.
- Based on European Standard EN 12900 and 50 Hz operation, the performance data reflect dew point conditions for evaporating and condensing temperatures.
- For zeotropic blends like R407C, the data account for changes in pressure levels and liquid temperatures, resulting in lower numerical values for cooling capacity and efficiency.
- Economiser: Unique sliding suction position for efficient operation even at part load.
- Intelligent Electronics: Includes thermal monitoring, phase sequence monitoring, and oil temperature sensors.
- Optimised Oil Management: Features a three-stage oil separator and fine filter for enhanced performance.
- Comprehensive Equipment: Includes capacity control, start unloading, and various valves and filters for optimal operation.
- Includes suction shut-off valves, oil level switches, pulsation mufflers, and adapters for external oil coolers.
The document discusses the impact of liquid subcooling on the rated cooling capacity and efficiency (COP) of compressors, noting that these values are lower when compared to data based on 5 or 8.3 K of subcooling. It references the European standard EN 12900 for economiser operation, where liquid temperature is defined as 5 K above the saturated temperature at the economiser inlet.
Economiser operation inherently includes liquid subcooling, with specific temperature settings according to EN 12900. This operation mode is crucial for optimizing compressor performance.
The BITZER Software allows for detailed compressor selection with individual data input, providing output data that includes performance parameters, application limits, technical data, and dimensional drawings. Specific data sheets can be generated for further use in other software programs.
Power data is based on 50 Hz operation and the EN 12900 standard. For zeotropic mixtures like R407C, reference parameters change, resulting in lower cooling capacity and performance index values.
Connection points for high pressure (HP) and low pressure (LP) are specified, with the current technical standard not accounting for pressure loss due to stop valves and check valves. This standard is applied to BITZER's CSH series screw compressors for international data comparison.
The document details the ASERCOM certification process for compressor performance data, which includes plausibility checks and regular tests by independent institutes. Only compressors meeting strict requirements can carry the "ASERCOM certified product" label.
Thermal limits for capacity control and additional cooling depend on the compressor type. Liquid injection or external oil cooling is required for part-load operation to adjust application limits. Extended application limits are possible with individual coordination with BITZER.
Performance data is provided for various compressor types and operating conditions, including standard and economiser operations. The data includes cooling capacity, power consumption, and application limits based on different refrigerants and operating conditions.
Catalog excerpts
CSH-Serie 65 ■ 75 ■ 85 ■ 95 CSH Series 65 ■ 75 ■ 85 ■ 95 Série CSH 65 ■ 75 ■ 85 ■ 95 Fördervolumina von 137 bis 910 m3/h bei 50 Hz Displacement from 137 to 910 m3/h at 50 Hz Volumes balayés de 137 à 910 m3/h (50 Hz) Inhalt Seite Content Page Sommaire Page Die besonderen Attribute 2 The special highlights 2 Les atouts particuliers 2 Die technischen Merkmale 3 The technical features 3 Les critères techniques 3 Einsatzgrenzen 8 Application limits 8 Limites d'application 8 Leistungsdaten für R134a R407C R22 10 12 14 Performance data for R134a R407C R22 10 12 14 Données de puissance pour R134a R407C...
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Extensive Capacity Range La large gamme de puissance etroitement graduee Volumes balayes The Decisive Technical Features Les criteres techniques determinants Besonders effizient durch • Weiterentwickelte Geometrie • Hohe Steifigkeit • Patentiertes Herstellungsverfahren • Hohe Umfangsgeschwindigkeit siertes Rotorgehause • Hochstabil, dadurch auch bei hohen Drucken keine Gehauseaufweitung • Zusatzliche Gerauschdampfung • Further developed geometry • High stiffness • Patented highest precision manufacturing process pensated rotor housing • Extremely stable, therefore no expan- sion of the compressor...
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❏ Dauerfeste Lagerung mit Druckentlastung ❏ Approved, long-life bearings with pressure unloading ❏ Paliers résistants à la fatigue avec décharge de pression • Solide Tandem-Axiallager • Geschlossene Lagerkammer durch Dichtelement zum Verdichtungsraum • Druck-Entlastung der Axiallager • Robust axial tandem bearings • Bearing chamber pressure isolated from compression chamber by sealing element • Pressure unloading of axial bearings • Paliers de butée en tandem robustes • Logement de paliers isolé de la chambre de compression par élément d'étanchéité • Décharge de pression des paliers de butée...
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❏ Economiser mit gleitender Einsaugposition ❏ Economiser with sliding suction position ❏ Economiseur avec position d'aspiration coulissante • Einzigartig bei Kompaktschrauben • ECO auch bei Teillast effektiv • Höchstmögliche Kälteleistung und Leistungszahl bei Voll- und Teillast • Pulsationsdämpfer für ECO-Saugleitung • Unique for compact screws • Efficient economiser operation with part load as well • Highest cooling capacity and energy efficiency at full and part load conditions • Pulsation muffler for ECO suction line • Unique pour vis compactes • Economiseur efficient même en réduction de...
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Leistungsangaben Performance data Données de puissance Leistungsdaten basieren auf der europäischen Norm EN 12900 und 50 Hz-Betrieb. Performance data are based on the European Standard EN 12900 and 50 Hz operation. Les données de puissance se basent sur un fonctionnement à 50 Hz et sur la norme européenne EN 12900. Die Verdampfungs- und Verflüssigungstemperaturen beziehen sich darin auf ''Taupunktwerte'' (Sattdampf-Bedingungen). Bei zeotropen Gemischen, wie R407C, verändern sich dadurch die Bezugsparameter (Drucklagen, Flüssigkeitstemperaturen) gegenüber bisher üblicherweise auf ''Mitteltemperaturen''...
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ASERCOM zertifizierte Leistungsdaten ASERCOM certified performance data Données de puissance certifiées par ASERCOM Der Verband europäischer Hersteller von Kälteverdichtern und Regelgeräten (ASERCOM) hat ein Zertifizierungsprogramm für Leistungsdaten von Kälteverdichtern implementiert. The Association of European Refrigeration Compressor and Controls Manufacturers (ASERCOM) has implemented a procedure of certifying compressor performance data. L'Association Européene des fabricants de compresseurs et de produits de régulation (ASERCOM) a mis en place une procédure de certification des données...
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Einsatzgrenzen Application limits R134a Standard Limites d'application R134a ECO 70 CR 75% tc [°C] 70 CR 50% CR 75% tc [°C] 60 CR 50% Motor 1 60 CR 25% LI Motor 2 LI 50 CR 25% 50 Motor 1 40 40 Motor 2 30 30 toh = 10 K 20 -20 -15 -10 -5 0 5 10 to [°C] toh = 10 K 20 R407C Standard 60 -15 -10 -5 5 0 10 to [°C] 20 R407C ECO 70 tc [°C] 20 -20 70 LI CR 75% tc [°C] CR 50% LI CR 75% 60 CR 50% CR 25% CR 25% 50 CSH9591 50 40 40 30 CSH9591 30 toh = 10 K 20 -20 -15 -10 -5 0 5 10 to [°C] toh = 10 K 20 20 -20 -15 -10 -5 5 0 Daten sind Taupunkt bezogen Data are based on dew point Données se refèrent au point...
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Erläuterung zu Einsatzgrenzen Explanation to application limits Explication des limites d'application Thermische Grenzen für Leistungsregelung (CR) und Zusatzkühlung (Kältemittel-Einspritzung und externe Ölkühlung) sind abhängig vom Verdichtertyp. Die maximale Verflüssigungstemperatur kann bei einzelnen Typen eingeschränkt sein. Thermal limits for capacity control (CR) and additional cooling (liquid injection and external oil cooling) depend on the compressor type. The maximum condensing temperature can be restricted with individual types. Les limites thermiques pour la régulation de puissance...
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ohne Flussigkeits-Unterkuhlung© based on 10 K suction superheat, without liquid subcooling© se referant a surchauffe a Inspiration Verdichter Verfl.- Compressor Cond type temp Compresseur Temp. Cooling capacity Puissance frigorifique Power consumption Puissance absorbee Fonctionnement standard© Leistungsdaten fur individuelle Eingabewerte siehe BITZER Software Q Standard-Betrieb: Leistungswerte ohne © Daten gelten fur Verdichter mit Motor Version 2. Fur honere Verflussigungstemperaturen kann Motor Version 1 erforderlich werden. Einsatz- grenzen siehe Seite 8, Leistungswerte siehe BITZER Software....
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based on 10 K suction superheat with liquid subcoolingO se referant a surchauffe a Inspiration Verdichter Verfl.- Compressor Cond type temp Compresseur Temp. Cooling capacity Puissance frigorifique Power consumption Puissance absorbee Leistungsdaten fur individuelle Eingabewerte siehe BITZER Software Performance data for individual input data Donnees de puissance pour des donnees d'entree individuelles voir BITZER Software O Standard-Betrieb: Leistungswerte ohne © Daten gelten fur Verdichter mit Motor Version 2. Fur hohere Verflussigungstemperaturen kann Motor Version 1 erforderlich werden. Einsatz-...
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