Gasketed plate heat exchangers
Plate & frame construction
Design and function
Gasketed plate heat exchangers consist of a set of adjoining embossed plates with apertures.
The plates are assembled at a 180° angle to each other, resulting in a flow gap. The gasket, which is mechanically secured or glued onto every plate, ensures that the flow gaps are securely sealed to the outside and from the second medium involved in the heat exchange.
The plate assembly is mounted in a frame and compressed with tightening bolts between the fixed plate and the movable plate.
The gaskets of a plate heat exchanger experience a normal fatigue process over the course of their service life. Depending on the conditions of use, the plate assembly can be re-tightened several times until the lower limit is reached.
The connections of the media involved in the heat exchange are on the fixed plate, but can also be on the movable plate for multiple-pass flows. (see “Flow diagram”).
Our product range includes single and multiple-pass plate heat exchangers with heat exchange surfaces of up to 2,000 m².
|Heat exchange surface per plate:||0.04 - 3 m²|
|Max. operating pressure:||25 bar|
|Max. operating temperature:||200°C|
Our plates come with a double gasket at the inlet and outlet to prevent mixing of the two media. If designed as a safety heat exchanger, double plates are provided with a special gasket system.
- Safety plate heat exchangers (FPDW)
- Stainless steel versions for food and pharmaceutical applications
- Plate heat exchangers in redundant configuration, installed as a compact unit on base frame, incl. switch-over valve, thermostat and safety valves
Combination of plates and gaskets
FUNKE heat transfer plates are known for their thermodynamically and hydraulically optimized embossing, resulting in compact and cost-effective solutions.
Standard plate materials
- 1.4301 (AISI 304)
- 1.4404 / 1.4401 (AISI 316L/AISI 316)
Special plate materials
Depending on the application different plate materials are being used:
- 1.4539 (N08904 / 904L)
- 1.4547 (254 SMO / S31254)
- 2.4066/2.4068 (Nickel 200 / Nickel 201)
- 2.4602 (Alloy C-22)
- 2.4819 (Alloy C-276)
- 2.4605 (Alloy 59)
- 3.7025 (titanium Gr. 1) / 3.7225 (TiPd, titanium Gr. 11)
- NBR in various qualities
- EPDM in various qualities
- FPM (Viton) in various qualities
- Mechanically secured gaskets (standard)
- Glued gaskets
|Renewable Energies Technology|
|District heating/cooling||Hydraulics||Central cooling||Rafineries and processing
(PE, PP etc.)
|Thermal power stations||Automotive industry||Lubricating oil cooler||Basic chemistry
Acids, alkalines etc.)
|Solar power plants|
|Heating, ventilation, air conditioning||Process Technology
(thermal plants, plastics etc.)
|Generator cooling||Special chemistry
(Adhesives, coatings etc.)
|Water power plants|
|Swimming pool technology||Surface treatment||Auxiliary system cooling||Fine chemistry||Bioenergy|
|Supply technology||Compressor systems||Pharmaceutical industry||Wind power plants|
|Food industry||Fuel cell technology|
Design of a
plate heat exchanger
- Fixed plate
- Movable plate
- Support column
- Carrying bar
- Lower plate guiding bar
- Carrier roller
- Tightening bolt and nuts
- Fixing bolts
- Rubber/metal liners
- Heat transfer plates
- Name plate
Flow diagram/media flow
Plate heat exchangers can feature single or multiple-pass configurations depending on the requirements, with the single-pass configuration most commonly used.
The advantage here is that the movable plate can be removed for maintenance and servicing without having to disconnect the process connections as all the connections are located on the fixed plate.
Single-pass PHEs are most commonly used.
In single-pass PHEs, all inlet and outlet pipes are connected to the fixed plate, i.e. on the same side.
Multiple-pass PHEs may be required if there are small temperature differences between the flow media. In these systems, the connection pipes are located on both sides of the fixed and movable plate.
The media flow through the plate package multiple times according to the pass configuration.