Safety heat exchangers

When safety is your number one priority

The range of safety shell-and-tube heat exchangers is based on the ‘three chamber devices’ principle, which was developed
and patented by the company’s founder Karl-Heinz Funke.

Operating principle of a safety heat exchanger

Here with double tubes, double sheets and leak sealing liquid

Operating principle of a safety heat exchanger with double tubes, double sheets and leak sealing liquid

V = volume expansion tank, P = pressure control device, yellow area = safety space

Design Features

  • Media separated by double tube bundles, media cannot mix
  • Special sealing liquid for immediate leak indication
  • Leakage system works independently of the installation position
  • Leakage detection is possible through process control
  • Suitable for a wide range of liquid media

Application

Safety heat exchangers are used wherever the highest requirements for product purity in process engineering (e.g., food/pharmaceutical industry) are required, where there is an environmental risk of contaminating cooling or process water, or because mixing of the media can damage the machine or system.

FUNKE offers three versions for different requirements:

SWF/P, SSWF/P (customised)

Design features

  • Tube bundle fixed (F) or removable (P versions)
  • Tube side 1-, 2- or 4-pass
  • Horizontal or upright version

Note

Based on the customised range
(see „Customised“ section)

Different construction regulations, customer specifications and country-specific approvals, as well as materials, can also be taken into account.

Furthermore, larger building sizes (diameter and overall length) are possible compared to the standard model series.

SWF-HE, SSWF-HE

Design features

  • Tube bundle fixed
  • Tube side 1-, 2- or 4-pass
  • Horizontal or upright version

Note

Based on the customised range
(siehe „Customised“ section)

Different construction regulations, customer specifications and country-specific approvals, as well as materials, can also be taken into account.

Furthermore, larger building sizes (diameter and overall length) are possible compared to the standard model series.

Special features

In this version, a double wall tube (made of stainless steel or carbon steel) with an increased contact area between the inner and outer tube is produced via hydraulic expansion technology. This results in a connection with approx. 80% tube-to-tube contact, far more than in comparable systems (significantly increased efficiency and compactness).

Due to the construction-related design, crevice corrosion is not possible.

Compared to the safety heat exchanger versions 1 and 2, no sealing medium is required for this system since the space in between is monitored by means of a vacuum. This heat exchanger can also be used for products that are not allowed to come into contact with liquids.

SWF/P, SSWF/P (Series)

Design features

  • Tube bundle fixed (F) or removable (P versions)
  • Material variants
    • Brass (types SWF/SWP)
    • Stainless steel (types SSWF/SSWP)
  • Internal tube measurement (brass):
    exterior inner tube 9.5 x 0.8 mm, interior inner tube 7.7 x 0.8 mm
  • Internal tube measurement (stainless steel):
    exterior inner tube 9.5 x 0.8 mm, interior inner tube 7.7 x 0.7 mm
  • Variable baffle spacing
  • Tube side 1-, 2- or 4-pass
  • • Horizontal or upright version with
    angle or clamped feet or stand

Boundary conditions

  • Design pressure:
    Shell side: 16 bar
    Tube side: 10 bar
  • Design temperatures:
    -10 / 150 °C
  • Version pursuant to PED 2014/98/EU and AD-2000
  • CE marking

Downloads

Brochure Safety Heat Exchangers

Brochure Safety Heat Exchangers

Contact

Kristin Böhm

Graduate Engineer

Kristin Böhm

Manager Shell-and-Tube HE
Sales & Thermal Design

FUNKE Wärmeaustauscher Apparatebau GmbH

Zur Dessel 1
31028 Gronau/Leine
Germany


T +49 (0) 51 82 / 582-16
F +49 (0) 51 82 / 582-48

Contact via E-Mail


Stefan von Kalben

Stefan von Kalben

Manager Shell-and-Tube HE
Sales & Thermal Design

FUNKE Wärmeaustauscher Apparatebau GmbH

Zur Dessel 1
31028 Gronau/Leine
Germany


T +49 (0) 51 82 / 582-89
F +49 (0) 51 82 / 582-48

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