r410a // hermetic VSD Operation 60 Hz // ESP-133-2

Transcription

1 r410a // hermetic Scroll compressors orbit Series: Variable Speed Drive VSD Operation 60 Hz // ESP-133-2

2 ORBIT for variable speed drive (VSD) While the scroll compressors of the ORBIT series are characterized by high full load and seasonal efficiency, low sound levels, and high reliability, they are also now suitable for use with variable speed drives. VSD capable scroll compressors from BITZER give system designers more solutions to the challenge of maintaining full load and rating point efficiency levels, while also increasing efficiency at part load conditions where equipment operates during most of the year. Using the overspeed potential of the GSD gives the option of downsizing the nominal compressor displacement to cover partly the VSD costs. The wide speed range allows for capacity reduction together with low condensing pressure operation, e. g. in comfort air-conditioning applications, for high system efficiencies. Coupled with BITZER s unique lower con densing temperature optimization, system designers have never had so many options to satisfy their customers needs. M 3~ I T1 T3 T5 U V W U ZK T4 T6 T2 Wide speed/capacity range Hz The ORBIT with VSD capability provides smooth and efficient operation from 35 to 75 Hz*. While many designers use tandem and trio compounds to achieve simple and efficient capacity staging in chiller applications, the VSD capability of the ORBIT provides new options for refrigerant-to-air systems which need fast and instant capacity adap tation. The quick response of the ORBIT with VSD allows accurate temperature control. Design flexibility with reduced inventory costs Since standard ORBIT compressors are VSD capable, system designers have many options. Even tandems, uneven tandems, and even fixed + variable speed tandems, for example. And, when used with BITZER Advanced Header Technology, it is possible in many cases to offer different efficiency versions of the system with common piping and construction, which greatly reduces factory complexity and inventory carrying costs. Such technical solutions provide benefits for sales, technology, manufacturing and financial functions. * GSD6, GSD80421 & GSD80485: 45 to 65 Hz 2 ESP-133-2

3 50 High cooling capacity Capacity (Tons according to ARI 540) GSD80182V GSD80235V GSD80295V GSD80385V GSD80421V GSD80485V The large capacity range of the ORBIT series is enhanced with the ability to either slow down, or speed up depending on demand. This in creased range can allow users the option to reduce the number, size and variety of compressors used in the system design. ORBIT 8 Nominal Speed ORBIT 8 Variable Speed Heat Pump Capacity & Heat Load: Fixed vs. Variable Speed Heat pump application The ORBIT with VSD capability is an ideal solution for designers looking for high system performance. While a standard scroll compressor must cycle on/off to achieve temperature control in the building, a scroll with VSD can easily follow the characteristics. In addition, BITZER provides a large application envelope precisely in the area most needed by heat pump applications. Offsetting low refrigerant mass flow rates associated with these conditions is now possible with BITZER s ORBIT with VSD capability. Heat Pump Capacity [Btu/h] Supplemental Heat required Bivalent Point Ambient Temperature [ F] Required building heat Load Standard Scroll Compressor at fixed speed ORBIT 8 Variable Speed (smaller size compressor) Bivalent Point: Heating capacity of smaller size compressor at 75 Hz equal to standard scroll at fixed speed (50 Hz) IPLV for Refrigerant-to-Air Systems IPLV advantage Btu/(W x h) BITZER ORBIT Variable Speed +15% Seasonal Energy Efficiency While ORBIT operation is known for its optimization towards IPLV, these benefits are further enhances with the application of VSD technology increasing the IPLV even up to 15%. Designers can take advantage of the lower condensing pressures associated with part-load operation and further reduce their power consumption. This is in particular of advantage with refrigerant-to-air systems but also for chillers with two or more compressors in multi-circuits (one with VSD) for stepless modulation of the required cooling demand. ESP

4 Application Limits BITZER ORBIT with VSD 35 Hz* Application after consultation with BITZER * GSD GSD80385 only BITZER ORBIT 8 Boreal with VSD 160 SDT [ F] Hz SH = 20 F SST [ F] 60 SST Saturated suction tempeature ( F) SH Suction superheat ( F) SDT Saturated discharge temperature ( F) 4 ESP-133-2

5 ORBIT 6 Performance data Performance data are based on ARI 540 boundary conditions. Saturated suction and discharge temperatures correspond to dew point conditions (saturated vapor). Performance data based on 20 F suction superheat and 15 F subcooling ➀. Compressor type Ü Q o P e ➁ Cooling capacity [kbtu] Power consumption [kw] Energy Efficiency Ratio EER SST ( F) SDT ( F) Frequency (Hz) R410A ➂ Q GSD60120VA P 8,15 10,85 11,76 7,27 9,71 10,52 5,84 7,81 8,46 EER 11,36 11,43 11,43 13,73 13,74 13,74 19,30 19,40 19,40 Q GSD60137VA P 9,13 12,12 13,13 8,16 10,87 11,78 6,58 8,78 9,51 EER 11,37 11,39 11,39 13,72 13,79 13,79 19,22 19,33 19,33 Q GSD60154VA P 10,20 13,52 14,65 9,11 12,10 13,11 7,36 9,81 10,63 EER 11,43 11,45 11,45 13,78 13,73 13,73 19,30 19,16 19,16 Q GSD60182VA P 11,97 15,95 17,28 10,72 14,39 15,58 8,65 11,78 12,76 EER 11,51 11,51 11,51 13,80 13,75 13,75 19,32 18,96 18,96 Q o GSD60235VA P upon request Tentative data COP ORBIT 6 ➀ Running-in period 72 hours. ➁ Power consumption at motor terminals; power consumption at inverter intake depends on the individually applied inverter model. ESP

6 ORBIT 8 Performance data Performance data are based on ARI 540 conditions. Saturated suction and discharge temperatures correspond to dew point conditions (saturated vapor). Performance data based on 20 F suction superheat and 15 F subcooling ➀. Compressor type R410A ➂ Ü Q o P e ➁ Cooling capacity [kbtu] Power consumption [kw] Energy Efficiency Ratio EER SST ( F) SDT ( F) Frequency (Hz) (65) (65) (65) ORBIT 8 optimized for air-cooled systems and reversible chillers Q GSD80182VA P EER Q GSD80235VA P EER Q GSD80295VA P EER Q GSD80385VA P EER Q GSD80421VA P ➂ ➂ ➂ EER Q GSD80485VA P ➂ ➂ ➂ EER Ü ORBIT 8 Boreal optimized for systems with low condensing temperature SST ( F) Compressor type SDT ( F) Frequency (Hz) (65) (65) Q GSD80235VW P EER Q GSD80295VW P EER Q GSD80385VW P EER Q GSD80421VW P ➂ ➂ EER Q GSD80485VW P ➂ ➂ EER Tentative data ➀ Running-in period 72 hours. ➁ Power consumption at motor terminals; power consumption at inverter intake depends on the individually applied inverter model. ➂ Performance data at 65 Hz. 6 ESP-133-2

7 ORBIT 6 Technical data Compressor type Displacement with Hz Speed range ➀ Oil charge ➁ Weight Pipe connections ODS DL Discharge line SL Suction line Motor connection Electrical data compressor Rated load amps (RLA) Starting current LRA (Amp.) CFM fl.oz lbs inch inch ➂ Amp. ➃ Amp. ➄ GSD60120VA Hz /8 1 3 /8 GSD60137VA Hz /8 1 3 /8 GSD60154VA Hz /8 1 3 /8 GSD60182VA Hz /8 1 3 /8 GSD60235VA Hz /8 1 3 /8 Contact BITZER See BITZER Software See BITZER Software ➀ Preliminary data. Speed range at time of publication. These data are subject to change as a result of BITZER s policy of continuous improvement. Contact your local BITZER representative for application assistance. ➁ Charged with polyvinyl ether BVC32. ➂ Motor selection for FI operation depends on application considerations. For full envelope and over-speed capability, selection of the 208/230 V motor is generally required. Less demanding applications focused on IPLV consideration may be handled by either standard motor, or 380 V motors. Contact BITZER for assistance in proper selection. ➃ For the selection of contactors, cables and fuses the rated load amps (RLA) and the max. power consumption must be considered ( Electrical data ). RLA (MCC/1.56). ➄ Data for direct start. With VSD stepless rise of current up to actual load amps maximum up to rated load amps (RLA). Oil heater (option) 90 W/115 V, 230 V, 460 V, 575 V. For dimensional drawings see brochure ESP-125. ESP

8 ORBIT 8 Technical data Compressor type Displacement with 35.. (65) 75 Hz Speed range Oil charge ➀ Weight Pipe connections ODS Version B ➁ DL Discharge line SL Suction line DL Discharge line Connection thread Version R ➁ SL Suction line Electrical data compressor Motor connection Rated load amps Starting current LRA (RLA) (Amp.) CFM fl.oz lbs inch inch inch inch ➂ Amp. ➃ Amp. ➄ ORBIT 8 optimized for air-cooled systems and reversible chillers GSD80182VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80235VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80295VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80385VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80421VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF Contact BITZER See BITZER Software See BITZER Software GSD80485VA(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF ORBIT 8 Boreal optimized for systems with low condensing temperature GSD80235VW(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80295VW(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80385VW(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80421VW(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF GSD80485VW(B/R) Hz /8 1 5 /8 1 3 /4 12 UNF 2 1 /4 12 UNF Contact BITZER See BITZER Software See BITZER Software ➀ Charged with polyvinyl ether BVC32. ➁ B = Direct brazing connections, R = Rotalock connections. ➂ Motor selection for FI operation depends on application considerations. For full envelope and over-speed capability, selection of the 208/230 V motor is generally required. Less demanding applications focused on IPLV consideration may be handled by either standard motor, or 380 V motors. Contact BITZER for assistance in proper selection. ➃ For the selection of inverter. ➄ Data for direct start. With VSD stepless rise of current up to actual load amps maximum up to rated load amps (RLA). GSD80182V.. GSD80485V: Oil heater (option) 140 W/115 V, 230 V, 460 V, 575 V. For dimensional drawings see brochure ESP ESP-133-2

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