Classic plate heatexchangers are nowadays manufactured by many suppliers. However, we have the possibility to offer among plate heatexchanger panels (PHP), standard brazed and plate & frame types a special development of E.-J. BOWMAN :
The brazed InLine type .

- InLine and standard brazed plateheatexchangers
- Standard plate & frame
- Advantages plate vs. shell & tube heatexchangers
- Advantages brazed vs. plate & frame heatexchangers
- Specification

Standard brazed heatexchangers These standard brazed heatexchangers consist of up to 200 profiled stainless steel plates. Every second plate is turned by 180° and put onto the previous one. You will find the total platepack between two coverplates accommodating the four connections. Due to following solderingprocess, either with copper or nickel at more than 1000°C , a compact heatexchanger is being created. Almost the entire material can be used for heatexchanger surface. The standard brazed heatexchangers are accepted by many classification societies, the same way the manufacturing process is confirmed by DIN ISO9001.                                                          top of page

                                                                                                                          

BOWMAN InLine These plate heatexchangers have a unique internal flow arrangement, which enables the inlet and outlet connections to be axially in line! Each fluid stream flows in series through alternate plates. As a consequence, the plate spacing is larger and internal velocities are higher than it is normally the case with this type of heatexchangers, thus rendering them less prone to fouling. InLine plate heatexchangers can be installed directly in pipework without any change of direction, as illustrated. Please note that, in- and  outlet connections of the process media have to be opposite. Connection should be in counterflow to achieve best performance. When using condensing steam for heating we recommend the outlet connection to be at the bottom, enabling condensate to flow unhindered. top of page

Standard plate & frame heatexchangers In general, the way the standard plate & frame heatexchangers function the same way the brazed ones do, with the exception that gaskets are used instead of  solder.  The platepack is mounted in a frame, being held in place by a guiderail and clamped together between the frame plate and the compression plate with locking bolts. Our standard range of heat exchangers consists of different designs suiting a multitude of customer´s demands. Some applications however require special solutions, for instance: The Mini MINEX is a SWEP-invention. This is the smallest plate & frame type heatexchanger in the world and herewith the solution of small and tiny heatexchanger tasks.   The plates made of 0,3mm stainless steel qualify this Mini-plate heatexchanger to be on duty in the food and pharmaceutical industry, were high demands in view of  hygiene have to be met. The gaskets are installed without any adhesives, therefore the coolers are very simple to clean. For example: for cooling of draught beer MINEX-plate heatexchangers are used in restaurants and pubs.                                                                                                                                          top of page The giant In relation to it´s width  plate heatexchanger is extreme tall but very efficient with only 0,4 mm thick stainless steel plates. The basic idea which led to the development of the G 28, was the operation as a milkcooler. You  will find this type installed in small dairies and farms; it consists of  acid-resistand stainless steel. Suitable for milk quantities between 600 and 8000 liter per hour. Fresh milk can be cooled down from 35°C to 4°C to be storable. This method of sudden temperature drop has a positive impact in the quality, as the milk-proteines will not be damaged. top of page the slim G28 Safety heatexchangers The safety heatexchangers are showing -instead of a single heatexchanger plate- a pack of two, put ontop of the other. They are laserwelded together around the in- and outlet  connections. In case of the unlikely case that one of these two plates, a gasket  or the welding seam shows a defect, the process medium will come out of the side or bottom between the two plates. The failure will be detected immediately. Measures can be taken accordingly. A mixture of the process media is almost out of the question.                                                    top of page Advantages plate vs. shell & tube heatexchangers - In contrast to shell & tube, plate heatexchangers are extremely compact -especially the brazed ones. This is achieved by i.e. use of thin material, high heat transfer coefficients and small hold-up volumes. This design reflects in reduced need of space and helps to reduce mounting costs too. - Plate heatexchangers are utilizing the whole heatexchanger material for heattransfer,  compared with shell & tube types up to 10 times. - At the same duty, plate heatexchangers can be smaller by the factor 5. The capacity is less, this helps to save money for process fluids, i.e.  refrigeration. - The  corrugated plates induce highly turbulent flow, which reduces building-/ choking up in the heatexchanger to a minimum.  Advantages brazed vs. plate & frame heatexchangers - Brazed heatexchanger show an exploitation of material, more than 20%. This results into an excellent ratio price/ performance. - In contrast to the brazed, plate & frame heatexchanger can be cleaned chemically AND mechanically, further more it is possible to add or remove plates out of the pack in order to react to changed application circumstances. - Working pressures of more than 30  bar (brazed type) opposite to 10 bar up to max. 25 bar (plate & frame type) distinguish.                                                                                                         top of page Specification     Standard, brazed InLine, brazed Standard, plate&frame Workingpressure, max.   upto 31 bar upto 20 bar upto 10 resp. 25 bar Workingtemperature, max.   upto 225°C upto 185°C upto 180°C Construktionmaterial Plates DIN 1.4401, 1.4547 DIN 1.4404 DIN 1.4401, Titan   Seal Copper or Nickelsolder Coppersolder NBR, FPM, EPDM

Plate&frame platetype-heatexchangers with kind permission of Tranter GmbH