METHOD OF DETECTING LEAKS IN AN AIR-TO-AIR HEAT EXCHANGER AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01M3/02 

FIELD: ventilation.

SUBSTANCE: invention relates to means of detecting leaks in air-air heat exchanger (1) of ventilation and air conditioning systems during their operation. Summary: device comprises two lines (2, 3) for unidirectional air flows passing in thermal contact, source (4) of control body, detector (5) of control body and computing device (6). Detector (5) of the control body is in form of an ion concentration detector. Source (4) of the control body is made in the form of an ionizer equipped with modulator (7) configured to control the ion modulation process. Input of modulator (7) is connected to computer (6). Output of control body source (4) is connected to input of main line (2) made with possibility of high air pressure generation. Input of detector (5) of control body is connected to output of main line (3) with low pressure. Computer (6) is connected to detector (5) of control body. High pressure is created in manifold (2). Reference body in the form of air enriched with a modulated negative ion flux is fed into high-pressure line (2) input. Concentration of control body at low pressure line (3) output is measured. Concentration of negative ions at main line (3) output determines volume of air overflow from main line (2) to main line (3).

EFFECT: possibility of continuous monitoring of health of an air-to-air heat exchanger, high reliability of monitoring.

3 cl, 4 dwg