Data sheet

Wieland WRK

Finned copper tube heat exchanger for use with refrigerants

Wieland WRK Heat Exchangers are helical coils made with medium-high finned copper tube GEWA-D and flange mounting out of brass. The extruded fins on the outside and grooved inner surface optimizes the heat transfer.

The standard galvanic tin-plated outside surface reduces the corrosion risk of galvanized steel pipes connected downstream.

Available Versions

Type





Max.
conden-
sation
per-
formance
Q [kW]*

Outer
surface
area


[m2]

Finned tube no.
 
 
 
 
 

Tube
length



[mm]

Volume
refri-
gerant
side

[liters]
Dimensions
[mm]
Weight
app.



[kg]
Dmax amax
e
G
WRK 4 3.0 0.4 D-1135.12100-00 2,450 0.2 63 410 62 1/2" 2.0
WRK 9 6.0 0.9 D-1135.12100-00 4,800 0.4 140 350 62 1/2" 3.5

WRK 13

8.5 1.3 D-1135.14100-00 6,000 0.7 147 410 62 3/4" 5.3
WRK 18 12.5 1.8 D-1135.18100-00 6,950 1.5 170 440 65 1" 7.5
WRK 23 16.0 2.3 D-1135.18100-00 8,750 1.9 170 540 65 1" 9.3

 


Available from stock. Customized design possible on request.
*Refrigerant R134a and ∆T = 25K (difference between condensation and water temperature)

Application

Assembly instructions

As a rule, for the use as condenser / desuperheater the Wieland WRK is placed into the bottom part of the hot water tank. Its position may be horizontal or vertical. To avoid vibration failure, the finned tube heat exchanger should be braced in the tank not only for transportation but also in operation.

The mounting to the storage flange is by means of a hexagon nut and hollow disk (included). The seal is generally placed on the outside, but is also possible on the inside. When fixing the nut, it is necessary to counterhold at the fitting flats. Connected refrigerant pipes should be soldered to the pipe ends and fully absorb vibrations. A muffler should be mounted where the refrigerant vapour enters.

Accessories

Quality Assurance

Responsibility begins with a high standard of quality. As the first company for semi-finished products in Europe, we have been on the path to certified quality management since 1987.
Today, we have DIN EN ISO 9001:2015 certifications for all producing plants, and our testing laboratories in Ulm and Vöhringen are additionally accredited to DIN EN ISO/IEC 17025:2018.

Pressure Equipment Directive

WRK heat exchangers correspond with the Pressure Equipment Directive 2014/68/EU. Our standard heat exchangers are leak-tested with an overpressure of 50 bar. On the refrigerant side, they are cleaned in accordance with DIN 8964, dried, filled with nitrogen and sealed with plastic caps.

Wieland Thermal Solutions
Heat exchangers

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