過熱蒸気発生高周波誘導加熱システムの開発
2003 年 38 巻 8 号 p. 501-508
詳細
2003 年 38 巻 8 号 p. 501-508
This paper describes a novel steam super-heater system which consists of sheath heater and induction heating unit. The structure of hybrid heater system is introduced as compact system for its portable use.The characteristic of electrical equivalent circuit of induction heating load as the temperature of heat exchanger rises is clarified.
A complex resonant zero current switching (ZCS) high frequency inverter is proposed as the high frequency power supply. The optimum circuit parameters such as inductance ratio and capacitance ratio are investigated in connection with ZCS operation region.
On the basis of these investigations, the complex resonant ZCS high frequency inverter is designed. The steam super-heater system is successfully examined and superheated steam of 200°C is generated in 30 second from starting condition. The usefulness of the
high frequency power supply is verified experimentally as high efficiency of 96% on power conversion.
