Open Drive Screw Compressors
Design Features
OS.53 .. OS.85
BITZER Kühlmaschinenbau GmbH
BITZER // S_OS_Features_GB // Page 2
Pressure
Vessels
Recip
Open
Drive
Semi-
Hermetic
Semi-hermetic
OSK / OSN / OSKB 53
OS...
BITZER // S_OS_Features_GB // Page 3
Open Drive Screw Compressors
Design Features OS.53 .. 74
OS.74
CR
Discharge side
Suct...
BITZER // S_OS_Features_GB // Page 4
Side View
OS.74
Open Drive Screw Compressors
OS.(A)74..
BITZER // S_OS_Features_GB // Page 5
Top View
OS.7441 / 51 / 61 / 71
(OS.7441 only CR1)
CR1
CR2
Open Drive Screw Compresso...
BITZER // S_OS_Features_GB // Page 6
Open Drive Screw Compressors
Product Range
OSKA Versions (for NH3 // HT & MT Applicat...
BITZER // S_OS_Features_GB // Page 7
Open Drive Screw Compressors
Product Range
0
20
40
60
80
100
120
140
Capacity -35/40°...
BITZER // S_OS_Features_GB // Page 8
Open Drive Screw Compressors
Booster Systems
BITZER // S_OS_Features_GB // Page 9
Open Drive Screw Compressors
Basic Functions & Compression Process
Contents
/ Basic f...
BITZER // S_OS_Features_GB // Page 10
ECO
SL
DL
pc
pecopo
p
s
Screw Compressors
Compression Process
BITZER // S_OS_Features_GB // Page 11
Open Drive Screw Compressors
Design Features – OS.53 .. OS.85
Contents
/ Basic funct...
BITZER // S_OS_Features_GB // Page 12
Integrated Capacity Control
OSKA74
CR50
CR75
ECO Port
BITZER // S_OS_Features_GB // Page 13
Open Drive Screw Compressors
Design Features – OS.53 .. OS.85
Contents
/ Basic funct...
BITZER // S_OS_Features_GB // Page 14
OS.85
Oil
DL
SL
ECO
Open Drive Screw Compressors OS.85
Mechanical Connections
BITZER // S_OS_Features_GB // Page 15
Integrated Oil Filter
Robust Bearing
Oil Stop Valve
OS.85 // Interior View
BITZER // S_OS_Features_GB // Page 16
OS.85 // Capacity Control by Slider Valve
BITZER // S_OS_Features_GB // Page 17
OS.85 // Integrated Discharge Gas Muffler
BITZER // S_OS_Features_GB // Page 18
OS.85 // Capacity Control
OS.A85
BITZER // S_OS_Features_GB // Page 19
OS.85 // Internal and External Accessories
ECO port integrated into slider valve (“A...
BITZER // S_OS_Features_GB // Page 20
Open Drive Screw Compressors
Design Features – OS.53 .. OS.85
Contents
/ Basic funct...
BITZER // S_OS_Features_GB // Page 21
Open Drive Screw Compressors
OS.85 with Coupling Housing
Coupling
Housing
Calculatio...
BITZER // S_OS_Features_GB // Page 22
Open Drive Screw Compressors
OS.85 with Coupling Housing and Coupling
Coupling
Coupl...
BITZER // S_OS_Features_GB // Page 23
Open Drive Screw Compressors
Oil Circuit with OS.(A)53 / 74 Series
FZ
5
6
789
23
4
1...
BITZER // S_OS_Features_GB // Page 24
Open Drive Screw Compressors
Design Features – OS.53 .. OS.85
Contents
/ Basic funct...
BITZER // S_OS_Features_GB // Page 25
Open Drive Screw Compressors
Documentation
SP-500
SH-510
SB-500
SP-510
SH-510
SB-510...
BITZER // S_OS_Features_GB // Page 26
Ammonia Screw Compressors
Booster System (Principle)
Simplified sketch
LT (Booster /...
BITZER // S_OS_Features_GB // Page 27
Cascade Systems
Possibly
Parallel Compound
with NH3 Screw
Compressors
(OSKA / OSNA)
...
Ammoniaca Bitzer
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Ammoniaca Bitzer

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Mostra Convegno Expocomfort, XVI EU Conference on "The Refrigerant Revolution , a 79% reduction" - Milan 20th March 2014

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Ammoniaca Bitzer

  1. 1. Open Drive Screw Compressors Design Features OS.53 .. OS.85 BITZER Kühlmaschinenbau GmbH
  2. 2. BITZER // S_OS_Features_GB // Page 2 Pressure Vessels Recip Open Drive Semi- Hermetic Semi-hermetic OSK / OSN / OSKB 53 OSK / OSN / OSKB 74 OSK / OSN / OSKB 85 OSKA / OSNA / OSKAB 53 OSKA / OSNA / OSKAB 74 OSKA / OSNA / OSKAB 85 Screw Open Drive “Units” (Recips) Condensing Units Open Drive Oil Coolers Oil Separators Shell + Tube Condensers Compressors Scroll Hermetic Liquid Receivers Compact Semi- Hermetic Condensing Units Semi-Hermetic Compressor Units Open Drive Receiver Units Open Drive Receiver Units Semi-Hermetic Components for Easy, Flexible, Reliable Parallel Compounds ‘Perfect Matching Modular Concept’ Introduction / Product Range Overview Open Drive Screw Compressors & Accessories
  3. 3. BITZER // S_OS_Features_GB // Page 3 Open Drive Screw Compressors Design Features OS.53 .. 74 OS.74 CR Discharge side Suction side Oil In Shaft
  4. 4. BITZER // S_OS_Features_GB // Page 4 Side View OS.74 Open Drive Screw Compressors OS.(A)74..
  5. 5. BITZER // S_OS_Features_GB // Page 5 Top View OS.7441 / 51 / 61 / 71 (OS.7441 only CR1) CR1 CR2 Open Drive Screw Compressors OS.(A)74..
  6. 6. BITZER // S_OS_Features_GB // Page 6 Open Drive Screw Compressors Product Range OSKA Versions (for NH3 // HT & MT Applications) Qo kW Pshaft kW 0 50 100 150 200 250 300 350 Capacity -10/45°C Power (shaft)
  7. 7. BITZER // S_OS_Features_GB // Page 7 Open Drive Screw Compressors Product Range 0 20 40 60 80 100 120 140 Capacity -35/40°C ECO Power (shaft) ECO Qo kW Pshaft kW OSNA Versions (for NH3 // LT Applications)
  8. 8. BITZER // S_OS_Features_GB // Page 8 Open Drive Screw Compressors Booster Systems
  9. 9. BITZER // S_OS_Features_GB // Page 9 Open Drive Screw Compressors Basic Functions & Compression Process Contents / Basic functions & compression process / Design features OS.53 .. OS.74 / Design features OS.85 / Accessories & options / Documentation
  10. 10. BITZER // S_OS_Features_GB // Page 10 ECO SL DL pc pecopo p s Screw Compressors Compression Process
  11. 11. BITZER // S_OS_Features_GB // Page 11 Open Drive Screw Compressors Design Features – OS.53 .. OS.85 Contents / Basic functions & compression process Design features OS.53 .. OS.74 / Design features OS.85 / Accessories & options / Documentation
  12. 12. BITZER // S_OS_Features_GB // Page 12 Integrated Capacity Control OSKA74 CR50 CR75 ECO Port
  13. 13. BITZER // S_OS_Features_GB // Page 13 Open Drive Screw Compressors Design Features – OS.53 .. OS.85 Contents / Basic functions & compression process / Design features OS.53 .. OS.74 Design features OS.85 / Accessories & options / Documentation
  14. 14. BITZER // S_OS_Features_GB // Page 14 OS.85 Oil DL SL ECO Open Drive Screw Compressors OS.85 Mechanical Connections
  15. 15. BITZER // S_OS_Features_GB // Page 15 Integrated Oil Filter Robust Bearing Oil Stop Valve OS.85 // Interior View
  16. 16. BITZER // S_OS_Features_GB // Page 16 OS.85 // Capacity Control by Slider Valve
  17. 17. BITZER // S_OS_Features_GB // Page 17 OS.85 // Integrated Discharge Gas Muffler
  18. 18. BITZER // S_OS_Features_GB // Page 18 OS.85 // Capacity Control OS.A85
  19. 19. BITZER // S_OS_Features_GB // Page 19 OS.85 // Internal and External Accessories ECO port integrated into slider valve (“Auto ECO”) / effective at full and part load operation Muffler integrated in discharge chamber Integrated oil management & monitoring system / Oil filter plus p control / Control device for oil pressure / oil flow / Oil stop valve with …  control for sense of rotation  indication of valve lift without external pipes!
  20. 20. BITZER // S_OS_Features_GB // Page 20 Open Drive Screw Compressors Design Features – OS.53 .. OS.85 Contents / Basic functions & compression process / Design features OS.53 .. OS.74 / Design features OS.85 Accessories & options / Documentation
  21. 21. BITZER // S_OS_Features_GB // Page 21 Open Drive Screw Compressors OS.85 with Coupling Housing Coupling Housing Calculation with Software  Accessories
  22. 22. BITZER // S_OS_Features_GB // Page 22 Open Drive Screw Compressors OS.85 with Coupling Housing and Coupling Coupling Coupling Housing
  23. 23. BITZER // S_OS_Features_GB // Page 23 Open Drive Screw Compressors Oil Circuit with OS.(A)53 / 74 Series FZ 5 6 789 23 4 1 11  6 mm (1/4") 10 12 (Option) Oil Flow Switch Oil Filter Oil Solenoid Valve Stand Still Bypass Oil injection kit Primary oil separator Secondary oil separator
  24. 24. BITZER // S_OS_Features_GB // Page 24 Open Drive Screw Compressors Design Features – OS.53 .. OS.85 Contents / Basic functions & compression process / Design features OS.53 .. OS.74 / Design features OS.85 / Accessories & options Documentation
  25. 25. BITZER // S_OS_Features_GB // Page 25 Open Drive Screw Compressors Documentation SP-500 SH-510 SB-500 SP-510 SH-510 SB-510 ST-500-4; ST-600-2; ST-610-2 SW-100-6; SW-110-2; SW-120-1; SW-500-2 SE-500-4  BITZER Software  EPARTS  Internet / Data Sheets
  26. 26. BITZER // S_OS_Features_GB // Page 26 Ammonia Screw Compressors Booster System (Principle) Simplified sketch LT (Booster / OSKAB) Optional „Side“ Load: MT / HT (OSKA / OSNA) Alternatives:  OA (alone)  OA + OAS  OACPossibly with additional oil pump (1) Suction bypass for pull down (2) Oil level control between oil separators not shown (1) (2) (2)
  27. 27. BITZER // S_OS_Features_GB // Page 27 Cascade Systems Possibly Parallel Compound with NH3 Screw Compressors (OSKA / OSNA) (see previous pages)

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