Main features of plate heat exchangers

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A plate heat exchanger consists of highly efficient heat-transfer corrugated plates and a layout. The plates are clamped by bolts between a fixed compression plate and a movable compression plate, thereby creating numerous flow channels inside the heat exchanger; the gaps between the plates are sealed with rubber. The pressing plate has interfaces for connecting this device to the outside world. The plate is made by pressing high-quality corrosion-resistant metal sheets; it has corner holes at the four corners for the medium to enter and exit, as well as hanging holes on the top and bottom. Herringbone ripples can introduce disturbances into the fluid, enabling it to reach a turbulent state at low speeds and thus achieving high heat transfer efficiency. A special layout is also adopted to ensure that the two fluid media do not leak into each other. 　　Key features: 1. High heat transfer efficiency: The heat transfer coefficient of plate heat exchangers is typically 3000–8000/m2·K·°C, which is 3–5 times higher than that of other heat exchangers. 　　2. Compact layout: It occupies less space, reducing capital investment; it offers the largest useful heat exchange area per unit volume and is lightweight. 　　3. Easy disassembly and cleaning: The disassembly and cleaning process can usually be completed on the same day. 　　4. It can achieve pure counterflow heat exchange: making full use of the temperature difference between the two fluids, with a heat recovery rate of over 95%. Those capable of handling small temperature differences possess the greatest efficiency; they are used for making use of low-temperature waste heat, and during heat exchange in air conditioners during summer, they perform a function that other heat exchange devices cannot carry out. 　　5. The heat exchanger does not require insulation: its heat loss is <1%.