A PRACTICAL WAY TO CALCULATE THE EFFICIENCY OF CLEANING HEAT EXCHANGERS
The article reveals a practical way to calculate the efficiency of cleaning heat exchangers. Scale on the heating surface of the heat exchanger increases the thermal resistance of the heat exchange wall and, consequently, reduces the heat transfer coefficient of the device. Often, in order to evaluate cleaning and its effectiveness, it is necessary to disassemble heat exchangers, which requires considerable time and a lot of labor. Here it is proposed to evaluate the cleaning of heat exchangers by measuring the temperature at the inputs and outputs of the heat carriers of the working and treated media before cleaning and after its completion without disassembling the structure. The temperature is measured by a thermal imager at the same points at the inputs and outputs when the heat exchanger is operating in stationary mode.