PLATE-TYPE HEAT EXCHANGER INCLUDING A DEVICE FOR EVALUATING THE EXTENT TO WHICH IT HAS BECOME COATED IN SCALE

摘要

The exchanger (1) has a set of stacked plates (2), and a sensor (20) evaluating clogging state of fluid circuits. The sensor includes an electric resistor which is thermally connected to a plate (10) located at an end of the stack. Thermocouples provided in the sensor measure temperature at close proximity of the resistor. The resistor is interposed between the plate (10) and a base (8) of the exchanger. An independent claim is also included for a method of evaluating a clogging state of a plate heat exchanger.