減圧・蓄熱式電気温水器のヒータ制御による騒音抑制(G10-8 音響・振動低減,G10 機械力学・計測制御部門)

概要

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New type of storage electric water heater supplies hot water through the heat exchanger, located in a vacuumed stream space. Although the structure of this kind of water heater is durable and profitable to keep the sanitation clean, the high level of noise has occurred when the low temperature boiler water has been heated up. One cause of this kind of noise should be the strong pulsating change of pressure, which is occurred by a condensation and collapse of vapor bubbles. And the intensity of such pulsating pressure depends on the degree of subcooling. One controlling method to reduce such noise and to storage in high speed has proposed. In that method, two heaters, which were located at upper and lower level of boiler water, were employed and controlled according to a change of temperature in stream space.
一般社団法人日本機械学会の論文
2004-09-04