For three decades, FUNKE has been specialising in the field of develop-ment and manufacture of plate heat exchangers with an exchange sur-face of up to 2000 m2 for all standard industrial applications as well as for use in the field of heating, air-condi- tioning and ventilation. The PHE consists of a pack with linked up embossed plates with passage openings. Every second plate is stag-gered by 180°, creating a flow gap in each case. All plates are provided with gaskets, which completely seal the various flow gaps from the outside and separate the second media involved in heat exchange. The plate pack is mounted in a rack and is pressed between the fixed plate and pressure plate by means of clamping bolts. Warm and cold media are normally led through the PHE in one-pass or multi-pass counterflows in order to guarantee a maximum heat transfer. Connections are on the fixed plate, in case of multi-pass flow they can also be on the pressure plate. At fi rst glance, the plate heat ex-changers of the different providers seem to be very similar. However, the secret of an efficient heat transfer is inside the plate pack whose perfor-mance depends on a whole range of factors apart from plate size and number. Ultimately, these factors determine the size of the device and the operating costs. For example, plates with different plate corrugation angles can be used. Obtuse corrugation angles result in longer thermal paths and higher heat transfer rates which in turn lead to a high pressure drop. The advantage is that the cross-sectional areas of the "warm" and the "cold" side of the PHE may be approximately one third larger or smaller. Whether symmetrical or asymmetrical, the configuration of the plate pack is always calculated by state-of-the-art design software. The first priority is always to find the most cost-effective solution for the customer. pecially embossed entry fields to allow for an optimum distribution of media. Provide maximum protection against the mixing of media involved in the heat exchange process.Two plates embossed together are laser-welded at the passage openings. Leaks may occur at theedge of the plate pair. FUNKE plate heat exchangers can be supplied with all of the usual connections for all fields of application (Industry, building services, chemicals, food). Alternate materials and welded designs may also be available. The design and the high quality standards of FUNKE plate heat ex-changers keep the amount of main-tenance work to a minimum, provided that the conditions of use for which the PHE has been designed are adhered to. However, during service life, the gaskets of a PHE are subject to a normal fatigue process. Depending on the conditions of use,the plate pack can be tightened sev-eral times until "PP"-min. is reached. Once the plates are provided with new gaskets, the PHE can return to its full capacity. Normally, maintenance and servicing can be carried out by adequately trained personnel of the operator.If necessary, contact our local service technicians or service partners who can provide the services specified in the adjacent list.
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