System and method for monitoring fouling coefficient of plate heat exchange in real time

Abstract

The invention relates to a system and method for monitoring the fouling coefficient of a plate heat exchanger in real time. The system comprises a sensor module, a processor, a server, an alarm and astorage unit, wherein the sensor module is used for acquiring the temperature and pressure of inlets and outlets on a cold side and a hot side of the plate heat exchanger and acquiring mass flow ratedata of the hot side and the cold side, and the processor is used for acquiring the fouling coefficient according to the sensor data and data in the storage unit. In the method based on the system, the data of the sensor module and the storage unit is processed, the fouling coefficient is acquired finally according to a heat transfer coefficient formula, whether cleaning is needed or not is judgedaccording to the fouling coefficient, and an alarm is given. Compared with the prior art, the system and method for monitoring the fouling coefficient of the plate heat exchanger in real time can accurately acquire the fouling coefficient of the plate heat exchanger and give an alarm, the safety of the system is improved, and manpower and financial resources are saved; and initial judgement is performed based on a differential pressure ratio, then, the fouling coefficient is confirmed in combination with the temperature, the pressure and the mass flow rate, and dual protection and judgment ensure the accuracy and safety of the system.

Description

technical field [0001] The invention relates to a system and method for real-time monitoring of the fouling coefficient, in particular to a system and method for real-time monitoring of the fouling coefficient of a plate heat exchanger. Background technique [0002] At present, there are many large-scale energy center projects. The energy center and each independent unit are separated by plate heat exchangers, which have distinguished their respective functional areas and protected the core equipment of the energy center. The use of plate heat exchangers has indeed improved the exchange rate. Thermal efficiency, but due to the structure of the plate heat exchanger, the channel is generally about 3mm smaller, and it is easy to foul and block after long-term use, which will easily reduce the heat exchange efficiency and effect of the plate heat exchanger and increase energy consumption. It also reduces the comfort of the air conditioner; moreover, the plate heat exchangers in ...

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Problems solved by technology

[0003] Among them, the fouling coefficient is one of the important data for judging whether the plate heat exchanger is fouled and clogged and the degree of clogging. In the existing plate heat exchanger equipment, the fouling coefficient cannot be accurately obtained, and it is difficult to judge the structural clogging. The plate heat exchanger can be disassembled to directly check whether there is scaling, which leads to increased labor costs, and repeated disassembly will also cause equipment loss

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