Plate heat exchanger base most prone to failure can be divided into the following four points of analysis:
1, mainly for the leakage (the amount of small, discrete droplets) and leakage (the amount of large droplets continuous). The main sites of leakage occurs plate and seal between the plate, plate two parts of seal leakage and the end of the slot plate and the pressing plate inside.
2, the string solution: The main features of the media for the high pressure side of the string into the low pressure side of the medium, the system will appear in the pressure and temperature anomalies. If the media is corrosive and may cause other devices in the pipeline corrosion. Usually occurs in string fluid diversion area or two at the sealing area.
3, the pressure drop: media inlet and outlet pressure drop over the design requirements, and even many times higher than the design value, serious impact on the system of flow and temperature requirements. In heating system, if the hot side pressure drop is too large, then the traffic will be a serious shortage of primary side, the heat is not enough, lead to secondary side can not meet the requirements of the temperature.
4, the heating temperature can not meet the requirements: The main feature is the outlet temperature is low, less than the design requirements. | 
