過熱水蒸気特性を利用した食品加工、環境浄化への応用について

抄録

With a life style of healthy and sustainable (LOHAS) intention, superheated steam cooking ovens have attracted attention recently. According to the main issue of this review, the establishment of a resource saving society, we introduce an outline of the principle of superheated steam including its characteristics; the generating apparatus itself, the application of food processing including the sterilization, drying and environmental fields. Superheated steam is steam at a temperature higher than water's boiling point. If saturated steam is heated at constant pressure, its temperature will rise, producing superheated steam. To produce superheated steam in a power plant or for processes (such as cooking), the saturated steam, from the steam drum is passed through a super heater. Superheated steam has three heat characteristics; condensation heat transfer, convection heat transfer, and emission heat transfer, respectively. In the present review, we describe the induction heating of a carbon element for a generator. By using these merits, we applied them for food processing, including household cooking. Besides energy saving and environmental benefits, the oxygen-free atmosphere appears to improve product quality by retarding some deterioration reactions in food materials. Under-atmospheric pressures are often required with foodstuffs, which are sensitive to high temperatures due to denaturalization reactions. These benefits increase the added value of foodstuff, including unused or discarded natural resources by changing them into a powder. Superheated steam characteristics are useful for environmental remediation, especially recycle and reuse of active-charcoal and the washing and drying processes of the drum tube recycling industry and the same time we show not only the total cost saving, but also decreased dramatically energy and water exhaustion. From our evidence, we propose that superheated steam technology is useful in the food processing and environmental industries, but have a high potential for other industrial applications in the near future as well.