Bitzer water cooled oil coolers

Bitzer offers the following external water cooled oil coolers (not suitable for R717 - NH3):

OWD series

Oil cooler OWD2112-20-4P

OWD series

Oil volume in refrigerant circuit

Heat transfer fluid volume

allowable fluids

oil according to ISO6743-3, DIN51503-1

water/brine

OWD..B series additionally seawater

PS max

32 bar

10 bar

PS min

-1 bar

0 bar

TS max

150°C

95°C

TS min

-20°C

4°C
with anti-freeze agent: -20°C

OW series

Oil cooler OW941

OW Series

Oil volume in refrigerant circuit

Heat transfer fluid volume

allowable fluids

Oil according to ISO6743-3, DIN51503-1

water/brine

OW..B series additionally seawater

PS max

28 bar

10 bar

PS min

-1 bar

0 bar

TS max

120°C

95°C

TS min

-10°C

4°C
with anti-freeze agent: -10°C

The values for allowable pressure (PS) and allowable temperature (TS) apply to approval in accordance to the EU Pressure Equipment Directive.

Depending on approval scheme the application ranges may lie within the specified values. For areas of validity outside the European Union, either the sign of the approval organisation or an alternative name plate is affixed to the pressure equipment.

Technical data

Technical data of water cooled oil coolers OWD series
OWD...B: seawater cooled version

OWD series

Weight [kg]

Oil volume [dm3]

Heat transfer fluid volume [dm3]

OWD1307(B)-10-..

36

7.0

2.7

OWD1307(B)-20-..

38

6.3

3.2

OWD1310(B)-20-..

46

8.4

4.1

OWD1607(B)-20-..

60

8.5

5.6

OWD1610(B)-20-..

71

11.4

7.1

OWD1612(B)-20-..

77

14.5

8.5

OWD1615(B)-20-..​

89

18.2

10.4

OWD1618(B)-20-..

102

22.0

12.2

OWD2112(B)-20-..

125

23.6

16.3

OWD2115(B)-20-..

143

29.7

19.8

OWD2118(B)-20-..

185

35.8

23.3

OWD2712(B)-20-..​

198

34.5

28.3

OWD2715(B)-20-..

229

43.4

34.1

OWD2718(B)-20-..

260

52.3

39.8

OWD3212(B)-20-..

263

48.2

40.4

OWD3215(B)-20-..

307

60.7

48.7

OWD3218(B)-20-..

349

73.1

57.1

Technical data of water cooled oil coolers OW series
OW...B: seawater cooled version

OW series

Weight [kg]

Oil volume [dm3]

Heat transfer fluid volume [dm3]

OW401(B)

33

10.5

2.2

OW501(B)

38

14.0

2.6

OW781(B)

60

18.0

4.5

OW941(B)

75

24.0

5.4

Pipe connections

OWD series

OWD1307(B) .. OWD3218(B)
OWD1307(B) .. OWD3218(B)
Pipe connections of water cooled oil coolers OWD series

Model

1

2

3a

3b

4a

4b

6

OWD1307(B)-10-..

DN40

DN40

G 1

G 1

G 1

G 1

-

OWD1307(B)-20-..

DN40

DN40

G 1

G 1

G 1

G 1

-

OWD1310(B)-20-..

DN40

DN40

G 1

G 1

G 1

G 1

-

OWD1607(B)-20-..

DN50

DN50

G 1 1/2

G 2

G 1 1/2

G 2

-

OWD1610(B)-20-..

DN50

DN50

G 1 1/2

G 2

G 1 1/2

G 2

-

OWD1612(B)-20-..​

DN50

DN50

G 1 1/2

G 2

G 1 1/2

G 2

-

OWD1615(B)-20-..​

DN50

DN50

G 1 1/2

G 2

G 1 1/2

G 2

-

OWD1618(B)-20-..​

DN50

DN50

G 1 1/2

G 2

G 1 1/2

G 2

-

OWD2112(B)-20-.

DN80

DN80

G 2

G 2

G 2

G 2

✓

OWD2115(B)-20-..

DN80

DN80

G 2

G 2

G 2

G 2

✓

OWD2118(B)-20-..​

DN80

DN80

G 2

G 2

G 2

G 2

✓

OWD2712(B)-20-..​

DN100

DN100

G 2 1/2

G 4

G 2 1/2

G 4

✓

OWD2715(B)-20-..​

DN100

DN100

G 2 1/2

G 4

G 2 1/2

G 4

✓

OWD2718(B)-20-..​

DN100

DN100

G 2 1/2

G 4

G 2 1/2

G 4

✓

OWD3212(B)-20-..

DN100

DN100

G 4

G 3

G 4

G 3

✓

OWD3215(B)-20-..

DN100

DN100

G 4

G 3

G 4

G 3

✓

OWD3218(B)-20-..

DN100

DN100

G 4

G 3

G 4

G 3

✓

Nominal diameters (DN) are not actual dimensions!

Nominal diameters (DN) are not actual dimensions!

The nominal diameters DN10 .. DN200 only indicate ranges! The number is not a quantifiable unit, it is only indirectly related to the diameters of the connections and should not be used in calculations.

OW series

OW401(B) .. OW941(B)
OW401(B) .. OW941(B)
Pipe connections of water cooled oil coolers OW series

Model

1
Diameter
[mm (inch)]

2
Diameter
[mm (inch)]

3a

3b
2 pass

4a
4 pass

4b
2 pass

5

9
Diameter
[mm]

OW401(B)

22 (7/8'')

22 (7/8'')

G 3/4

2 x G 3/4

G 3/4

G 1

-

10

OW501(B)

22 (7/8'')

22 (7/8'')

G 3/4
6 pass

2 X G 3/4
3 pass

G 3/4
6 pass

G 1
3 pass

-

10

OW781(B)

28 (1 1/8'')

28 (1 1/8'')

G 1

2 x G 1

G 1

G 1 1/2

G 1/4
(G 1/2)

10

OW941(B)

35 (1 3/8'')

35 (1 3/8'')

G 1

2 x G 1

G 1

G 1 1/2

G 1/4
(G 1/2)

10

Connection positions

1

Refrigerant or oil inlet

2

Refrigerant or oil outlet

2a

Alternative refrigerant outlet

3

Heat transfer fluid inlet

3a

4 or 6 pass

3b

2 or 3 pass

4

Heat transfer fluid outlet

4a

4 or 6 pass

4b

2 or 3 pass

5

Heat transfer fluid drain

6

Connection for pressure gauge

7

Connection for pressure relief valve
Internal thread 3/8-18 NPTF, external thread 1 1/4-12 UNF

8

Sight glass

9

Oil drain

10

Vent plug for heat transfer fluid

11

Lower fixing rails

12

Upper fixing rails

13

Heater connection

14

Measurement connection at heat transfer fluid inlet

15

Measurement connection at heat transfer fluid outlet

16

Vent plug for refrigerant or oil

Dimensions, if specified, may have tolerances according to EN ISO 13920-B.

The legend applies to all water cooled shell and tube condensers, discharge gas desuperheaters, oil coolers and all shell and tube evaporators. It includes connection positions that do not exist in every series.

For performance data, dimensional drawings and further information see BITZER SOFTWARE and the respective Operating instructions: