Plate heat exchangers
- brazed type - gasket type - semi-welded type - freeflow plate heat exchanger - evaporator - condenser - special types
ETS can supply plate heat exchangers for almost all applications for which traditional heat exchangers are normally used, only on a more efficient and economical basis.
We can supply plate heat exchangers with differential pressures of up to 25 bar and temperatures ranging from -180°C up to +200°C. Due to the use of special gaskets, this plate heat exchanger can be used even with very aggressive liquids. Compared with tube and spiral heat exchangers, the ETS plate heat exchanger has a number of advantages:
• Increased thermal efficiency
• Simple installation and operation
• Greater flexibility
• Compact construction
• Higher heat recovery
ETS places its many years of experience at your disposal and works with a high level of quality both in the production and in the calculation of plate heat exchangers.
With the aid of specially developed computer programs, an optimum solution can be calculated quickly and reliably and at a competitive price. Customised designs as well as larger or smaller series can be supplied at short notice.
Areas of application
Plate heat exchangers are used in many different branches of industry e.g.:
• food industry
• creamery industry
• district heating
Heat transfer plates are produced as standard in 1.4401, 1.4301 or titanium. Depending on the version, the end plates are made of St37 or stainless steel. Other materials can be used if required.
Brazed plate heat exchangers have no gasket and can function under a temperature range as from -180•C up to +200•C and under pressures up to 25 bar. The high turbulence guarantees an excellent heat transfer with the lowest need of space. This type is used for exchanges between clean fluids in the industry and domestic sector, also as condensers or vaporisers in refrigeration plants.
Gasket exchangers of the S-series are designed for an application with higher transfer performances, especially for liquid media in the industry, navy and in the domestic sector. The maximum working pressure is 16 bar at 160•C.
"Free-flow" plates heat exchangers allow to heat or cool particle-bearing or fibrous products without the risk of deposits on the plates. Typical applications are the fruit juice, yoghurt, ice cream, beer wort, tomato sauce but also waste water, cellulose etc., cooling or heating.
The "semi-welded" plate heat exchanger is mainly used for high pressure purposes and aggressive media where rubber gaskets or braze joints are incompatible. The welding joint being outside of the sealing groove, a corrosion attack is impossible.
This •round-welded• plate heat exchanger works in a similar way to a tubular heat exchanger, except that the tubes have been replaced by more efficient plates. The plates are laser/TIG welded together to form a plate pack, which is then mounted inside a traditional cylindrical shell. Advantages: no gaskets, safe operation up to 250•C and 25 bar, compact etc. The SPS is used for district heating, steam or oil and as a evaporator and condenser.
Safety heat exchangers can be used In applications requiring particular safety, due to regulations or other reasons. The two media are separated by double plates made of stainless steel. In the improbable event of an internal leak, the medium would visibly leak to the outside via the safety chamber and thus prevent the two media from mixing.
These exchanger types are made of flat metal chambers and are very versatile. The plate channels are reciprocally welded together from pimpled or round spacers. No gaskets are required between these chamber plates. Both sides are completely separated from each other and welded. Product mixing is not possible. Advantages: no gaskets, safe operation up to 300•C and 16 bar, compact construction etc.