Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz

Product catalog summary

Introduction
Frascold celebrates its 75th anniversary, showcasing its evolution from 1936 to the present. The company has made significant strides in technological advancements and global expansion within the refrigeration and air conditioning industry, emphasizing innovation, customer relations, and a strong global presence.

Product Overview
The SK2 range of semi-hermetic reciprocating compressors is introduced, specifically designed for CO2 subcritical applications. These compressors are ideal for industrial refrigeration and supermarket systems, offering benefits in hybrid cascade systems when used with Frascold's ECOinside and TK series for transcritical applications.

Technical Specifications

Design Pressures: 55 bar on the discharge side and 30 bar on the suction side, with options for higher standstill pressures.
Construction: Features a high tensile strength spheroidal cast iron crankcase, optimized valve plate for CO2, and a high-efficiency oil splashing disc.
Lubrication: Utilizes CO2 optimized POE lubricant and a wide crankshaft lubrication reservoir.
Safety Features: Includes an internal bypass valve set for a 38 bar pressure difference and an external safety valve set at 33 bar.
Motor Compatibility: Suitable for condensing temperatures up to 15°C and compatible with variable frequency drives (VFD).
Protection: Equipped with Kriwan INT69® electronic protection modules, offering diagnostic capabilities for certain series.

Standard Features
The SK2 compressors include suction and discharge valves, an internal bypass valve, an external safety valve, rubber vibration dampers, a POE lubricant charge, a nitrogen protective charge, an oil level sight glass, and electronic protection modules.

Model Range
The document details various models within the SK2 series, highlighting their displacement, motor specifications, and other technical data. These compressors are designed for subcritical CO2 applications, with specific models available and others under development.

Conclusion
Frascold's SK2 range signifies a major advancement in compressor technology for CO2 subcritical applications, providing enhanced performance, safety, and compatibility with modern refrigeration systems.

General Information
Frascold has over 75 years of experience in designing, manufacturing, and selling compressors for the refrigeration, air conditioning, and heat pump industries. Their product range includes compressors for both conventional artificial refrigerants and natural refrigerants like CO2, ammonia, and hydrocarbons. They have recently introduced a line optimized for low GWP refrigerants, including HFOs. Frascold compressors are renowned for their durability, reliability, high performance, and flexibility.

Product Specifications
The document lists various components and specifications for compressors, including liquid injection sensor plug, oil return plug, magnetic plug, maximum discharge temperature sensor, crankcase pressure plug, safety valve, electric motors for direct and part winding start with PTC thermistors, electronic control units for motor winding temperature monitoring and diagnostics, discharge temperature sensor, POE oil charge, crankcase heater, opto-electronic oil level control, suction and discharge valves, head fan for additional cooling, and rubber antivibration mounts.

Compressor Types
The document details various compressor types offered by Frascold, including semi-hermetic compressors, screw and compact compressors with integral frequency inverters, open drive compressors, single-stage, CO2 subcritical and transcritical applications, ECOinside, ATEX, horizontal design, two-stage, and tandem compressors.

Company Information
Frascold reserves the right to modify the catalog content for innovations and updates. The company has multiple offices, including in India and Italy, with contact details provided for sales and corporate inquiries.

Catalog excerpts

Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-1

New CO2 SK2 Range Up to 15°C condendensing temperature Enhanced standstill pressure S Semi-hermetic reciprocating compressors for CO2 subcritical applications Compressori semiermetici alternativi per applicazioni CO2 subcritiche Halbhermetische Hubkolbenverdichter für subkritische CO2-Anwendungen FCAT140.2 Product Selection Catalogue Version 50Hz

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-2

Frascold compie 75 anni dalla fondazione e guarda al futuro. Frascold was founded 75 years ago and is looking to the future. Frascold feiert seinen 75. Geburtstag und schaut in die Zukunft. Dal 1936 a oggi, un lungo cammino fatto di trasformazioni e attenzione alle tecnologie più avanzate. Its long journey from 1936 to the present day has been marked by transformations and attention to cutting-edge technology. Von 1936 bis heute, ein langer Weg voller Veränderungen und immer mit dem Augenmerk auf die modernsten Technologien. In tutto questo tempo Frascold ha prodotto compressori a servizio dell’industria...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-3

Compressori semiermetici alternativi per applicazioni CO2 subcritiche Semi-Hermetic reciprocating compressors for CO2 subcritical applications Halbhermetische Hubkolbenverdichter für subkritische CO2-Anwendungen La gamma SK2 è stata sviluppata tenendo presente le più recenti esigenze provenienti dalla refrigerazione industriale e dai produttori di applicazioni frigorifere per i supermercati e fornisce notevoli vantaggi se utilizzata in sistemi ibridi (cicli in cascata) in combinazione con la gamma Frascold ECOinside. Parallelamente l’utilizzo della gamma SK2 in combinazione con la gamma Frascold...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-4

Compressori semiermetici alternativi per applicazioni CO2 subcritiche Semi-Hermetic reciprocating compressors for CO2 subcritical applications Halbhermetische Hubkolbenverdichter für subkritische CO2-Anwendungen Caratteristiche principali del progetto Main design features • Pressioni di progetto 55 bar lato alta pressione 30 bar lato bassa pressione su richiesta è possibile fornire versioni con pressioni massime ammissibili ad impianto fermo più elevate (vedi pag. 7) • Corpo compressore realizzato in ghisa sferoidale ad alta resistenza (test di resistenza a 185 bar lato mandata e 100 bar lato...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-5

Compressori semiermetici alternativi per applicazioni CO2 subcritiche Semi-Hermetic reciprocating compressors for CO2 subcritical applications Halbhermetische Hubkolbenverdichter für subkritische CO2-Anwendungen Dotazione standard Standard extent of delivery I compressori della gamma SK2 sono forniti completi di rubinetti con attacchi a saldare, valvola di by-pass interna, valvola di sicurezza esterna, supporti antivibranti in gomma, carica di olio lubrificante, carica di azoto, spia livello olio, dispositivo di protezione Krivan INT69® per le serie A e D; Krivan INT69® Diagnose per le serie...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-6

Dati tecnici Technical data Technische Daten Cilindri Compressore Compressor Compressor Connessioni linee Aspirazione Mandata Pipe connections Suction Discharge Rohranschlüsse Druckleistung Saugleistung Connessione Motore Massima corrente operativa Massima potenza assorbita Motor version Motor version Volume spostato Corrente di avviamento Locked rotor current Fattore di conversione per 60Hz = 1,2 Tolleranza ±10% riferita al valore medio del campo di tensione. Altre tensioni fornite su richiesta Dimensionare i contattori, cavi e fusibili considerando la max corrente operativa. Vedi anche [4]...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-7

Limiti operativi Operating limits Einsatzgrenzen Compressor operation is possible within the limits shown on the application diagram. For the operating limits of each compressor, please see Frascold Selection Software. Compressor at 100% capacity Il funzionamento dei compressori è possibile all’interno dei diagrammi di applicazione. Per i limiti operativi di ogni singolo compressore consultare il Frascold Selection Software. Compressore al 100% della capacità Der Betrieb der Verdichter ist innerhalb der im Diagramm gezeigten Einsatzgrenzen möglich. Für die Grenzen der der einzelnen Verdichter...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-8

Prestazioni Performance Leistungsdaten Compressor Verdichter Data according to EN12900 conditions: 10K suction gas superheating without liquid subcooling Gemäß EN12900: 10K Sauggas-Überhitzung ohne Flüssigkeitsunterkühlung Dati riferiti alle condizioni EN12900: surriscaldamento gas aspirato 10K senza sottoraffreddamento del liquido Potenza frigorifera Potenza assorbita Cooling capacity Power consumption Kälteleistung Leistungsaufrnahme

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-9

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-10

Dimensioni di ingombro Dimensionale drawing Maßzeichnungen L Serie Series Reihe Supporto antivibrante Vibration absorber Compressore Compressor Verdichter Rubinetto aspirazione Suction valve Saugventil Rubinetto compressione Lunghezza Discharge valve Lenght Druckventil Länge Larghezza Width Breite Altezza Height Höhe Interassi di fissaggio Base mounting Abstand Befestigungslöcher Rubinetto aspirazione Suction valve Saugventil Rubinetto compressione Discharge valve Druckventil tappo di alta pressione high pressure plug tappo di bassa pressione Stopfen Saugseite tappo di carico olio spia di livello...

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Semi-hermetic reciprocating compressor CO2 Subcritical- 50 Hz-11

Dimensioni di ingombro Dimensionale drawing Maßzeichnungen F Serie Series Reihe Supporto antivibrante Vibration absorber Compressore Compressor Verdichter Rubinetto aspirazione Suction valve Saugventil Ø “ Rubinetto compressione Lunghezza Discharge valve Lenght Druckventil Länge Larghezza Width Breite Altezza Height Höhe Interassi di fissaggio Base mounting Abstand Befestigungslöcher Rubinetto aspirazione Suction valve Saugventil Rubinetto compressione Discharge valve Druckventil tappo di alta pressione high pressure plug Stopfen Druckseite tappo di bassa pressione Stopfen Saugseite tappo di...

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