Patent ID: 7293605

Claim:
In a control system for a heat exchanger of in which heat exchanging is resulted from a forced convection of a heat transfer medium, a flow resonance feed-back control system of a heat exchanger comprising; a detection element for detecting the flow characteristics of a heat transfer medium, the detection element being located at the aforementioned heat exchanger; a frequency processing element for calculating the flow resonance of a heat transfer medium by analyzing the flow characteristics detected by the aforementioned detection element; and a pulse generating element for providing the heat transfer medium in the heat exchanger with a pulse of a same period as the value of the flow resonance frequency calculated at the aforementioned frequency processing element, characterized in that the pulse generating element is a flow-rate control device which controls a flow-rate of a pump for providing the heat exchanger with a heat transfer medium with the same period as a flow resonance frequency input from the frequency processing element.