Hitachi, Ltd.

Kazutoshi Itoh

Michihiko Aizawa

Akira Minato

Heihatiro Midorikawa

Masahiko Itoh

Yasumasa Furutani

Katsumi Suzuki

Yoshiyuki Hoshino

Mamoru Suzuki

Tsuyoshi Kambayashi

Magnetic attracting means, especially a permanent magnet, is disposed in a high pressure feed water heater drain pipe line or air separator water tank of feed water and condensed water systems in a thermoelectric power plant. By adoption of this arrangement, iron oxides contained in water in the feed water and condensed water systems can effectively be attracted and removed by this magnetic attracting means.

Apparatus for removing iron oxides from water in feed water system of a

A hermetically closed circulation type, vapor absorption refrigerator which comprises a high temperature regenerator, a low temperature regenerator a condenser, an evaporator, an absorber and heat exchangers in a hermetically closed circulation system as essential constituent members composed of iron-based materials, where refrigeration is produced by repetitions of concentration of an absorbing solution sealed into the circulation system, dilution with a cooling medium and heat exchange, the inside wall of the high temperature regenerator being provided with a composite film of molybdenum oxides and iron oxide can be operated stably with a high reliability or corrosion resistance.

Hermetically closed circulation type, vapor absorption refrigerator

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Hitachi, Japan

Kazutoshi Itoh