Shell & Tube condensers

Bitzer shell-and-tube condenser seawater K033NB-2/4 pass connection for city water

Order No.: 151.7246
Manufacturer number: K033NB
Manufacturer: Bitzer

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Description

The water-cooled pipe bundle condensers from BITZER have long represented a standard in the refrigeration and air conditioning technology due to their well-known reliability and performance. The K series consists of two different versions to meet the demands of a wide variety of different ...

The water-cooled pipe bundle condensers from BITZER have long represented a standard in the refrigeration and air conditioning technology due to their well-known reliability and performance. The K series consists of two different versions to meet the demands of a wide variety of different applications. The unique soldering process used to connect the pipes and pipe bases provides excellent stability against vibrations and secure seals.

New models
The new model K6703.(B) and K8503.() enhance condenser performance of the standard and salt water resistant versions in the range above 1000 kW.

Standard version for normal water
The heat transfer pipes stand out for their high strength, the pipe bases are plastic-coated. This series is suitable for all coolant types that do not react with copper.

Salt water resistant version
The K..B models have been tried and tested over many decades in all kinds of maritime applications. They are extremely resistant to sea water corrosion. The low fouling profile pipes as well the plastic coating on the pipe bases and cooling medium recirculation caps make this a top choice. Liquid refrigerants flow out through an immersion pipe outlet on models up to K813HB and through two refrigerant outlets on models K1053HB and above.

Pressurised gas heater
Sizes K1053H to K4803T can also be supplied in the standard version for normal water as a pressurised gas heater. The optional second refrigerant outlet must be ordered in this case.

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Features

Maximum permitted pressure

  • Refrigerant side: 33 bar / -10 to 120 °C
  • Cooling medium side: 10 bar / -10 to 95 °C
    Temperatures below 4 °C require an antifreeze agent

This data applies for CE certification according to the EU Pressure Equipment Directive. Figures may vary depending on the ...

Maximum permitted pressure

  • Refrigerant side: 33 bar / -10 to 120 °C
  • Cooling medium side: 10 bar / -10 to 95 °C
    Temperatures below 4 °C require an antifreeze agent

This data applies for CE certification according to the EU Pressure Equipment Directive. Figures may vary depending on the certification process. Suitable for all conventional refrigerant and cooling media

Refrigerant side

  • high-performance pipes with external ribbing
  • Refrigerant connections: Pipe with thread or flange
    - Inlet:
      to K813H(B), Rotalock adapter
      solder connector with flange K1053H(B) and above
    - Outlet: Shut-off valve
    - various optional adapter and valve combinations
    - pressured gas heater - special version:
      Connection for second refrigerant outlet available on K1053H to K4803T
  • Connection for pressure relief valve:
    - Inner thread: 3/8-18 NPTF
    - Outer thread: 1 1/4-12 UNF
    - various optional adapters
  • inspection glass with deflection gratings as standard

Cooling medium side

  • Pipes with inner low fouling profile
  • Cooling medium connections: Pipe with thread or flange
  • Cooling medium drain from K573H(B)
  • Additional bleed plugs with models from K3803T(B)

Inert gas filling

  • 0.2 .. 0.5 bar nitrogen

Sturdy construction for simple maintenance

  • Secure seals: Heat transfer pipes are soldered into the pipe bases.
  • Easy to clean: both cooling medium recirculation caps are removable
  • Flexible: Cooling medium recirculation cap connection and deflection sides are interchangeable
  • Mounting brackets
    - Mounting brackets on bottom for stable support
    - Types H and T: additional mounting brackets on top saves space when mounting the compressor
    - Perfectly sized mounting plates and rails optionally available

Materials

  • Heat transfer pipes
    - Standard version: Copper (ISO code Cu-DHP; UNS code C12200)
    - Salt water resistant version: Copper-nickel 90/10 (ISO code CuNi10Fe1Mn; UNS code C70600)
  • Casing pipe: Carbon steel P265GH
  • Pipe bases: Carbon steel P265GH, plastic-coated
  • Cooling media recirculation caps: Cast iron EN-GJL-250 or carbon steel P265GH, plastic-coated on salt water resistant version

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Technical data

Dimensions
Diameter
108 mm
General information
Type
Bündelrohrverflüssiger
Refrigerant charge
3.8 kg = R448A/R449A
 
3.6 kg = R404A
 
1.7 kg = R290
 
 
(see explanation 3)
Type
K033NB
Condensation type
wassergekühlt
Connections
Water outlet
2 pass
G 3/4 Inch
4 pass
G 1/2 Inch
Water inlet
2 pass
2 x G 1/2 Inch
4 pass
G 1/2 Inch
Weight
Weight net
11,0 kg
Performance data
Pressure drop
2 pass
9 kPa
Flow
1.20 m³/h
nom.
 
1.38 m³/h
max. (see explanation 2)
 
0.43 m³/h
min.
Condenser capacity
3,9 kW
(see explanation 1)
Pipe connections
Outlet
Diameter
10 mm
3/8 inch
(see explanation 4)
Inlet
Diameter
12 mm
1/2 inch
Rotalock connection
Rotalock thread
Outlet
3/4-16 UNF Inch
Inlet
1-14 UNS Inch
Volume
Content
Refrigerant side
3,8 dm³
Cooling medium side
0,4 dm³

Notes

  1. Performance data based on:
    Refrigerant: R134a
    2 pass cooling
    Refrigerant inlet temperature: 90 °C
    Cleanliness factor on cooling medium side: 0.00004 m²K/W
    Standard version
    Condensation temperature: 40 °C
    Cooling medium inlet temperature: 29 °C
    Salt water resistant version
    Condensation temperature: 35 °C
    Cooling medium inlet temperature: 25 °C
    Condenser capacity is heavily influenced by the conditions in which the system is being operated. Performance data for other refrigerant and cooling media can be found in the BITZER SOFTWARE.
  2. This performance data assumes a maximum flow speed of 2.0 m/s for the salt water resistant versions
  3. Fluid temperature of 20 °C and container filled to 90%
  4. Additional refrigerant outlet
    ModelK033NB
    K073HB
    K123HB
    K203HB

    K173HB
    K573HB
    K813HB
    K1053H*
    K1053HB
    K1353T*
    K1353TB

    K1973T*
    K1973TB
    K2923T*
    K2923TB

    K3803T*
    K3803TB
    K4803T*
    K4803TB

    K6703TB
    K8503TB
    Additional
    refrigerant outlet
    -11/4-12UNF13/4-12UNF21/4-12UNFDN50DN80

    DN80

    *Special version

  5. For welding neck flange DIN2633, PN 10/16 or threaded flange DIN2566, PN 10/16

 

For individual performance data see the BITZER SOFTWARE

Technical modifications reserved. Product images may differ from the actual product and are meant for demonstration purposes only. Absolutely no liability can be assumed for possible indication errors and errors in the manufacturers’ information.
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