Mitsubishi Electric Corporation

Makoto Takata

Yasutaka Inanaga

Masakazu Taki

Nozomu Yasunaga

Gaku Oinuma

Seiji Furukawa

Seiro Yuge

Kota Kurihara

Tokiko Yamauchi

Noriko Nagata

Hiroshi Kuroki

Masashi Sugimoto

A comfort-analyzing device includes a display unit, a first control unit, an input unit, and a cognitive-structure constructing unit. The display unit is configured to present a questionnaire for extracting both a comfort level of a user in an environment and at least one environmental factor to determine the comfort level. The first control unit is configured to cause the display unit to present the questionnaire twice or more during a survey period. The input unit is configured to accept, from the user, input of each reply to the questionnaire presented twice or more. The cognitive-structure constructing unit is configured to construct a cognitive-structure model representing a cognitive structure of the user regarding comfort by extracting both the comfort level and the at least one environmental factor in chronological order based on each reply to the questionnaire presented twice or more.

Comfort-analyzing device, environment-control command device, and comfort-analyzing method

An ozone treatment apparatus includes: an ozone gas generator that generates ozone gas from raw material gas; a sludge pump that pressurizes sludge to be treated; an ejector in which the sludge to be treated, which is pressurized by the sludge pump, is injected; and a valve provided between the ozone gas generator and the ejector. The valve becomes in an open state when pressure on the former stage side is larger than pressure on the latter stage side by a specified value or higher. An ozone gas storage facility may be provided between the ozone gas generator and the valve. A sludge mixing tank installed in the latter stage of the ejector and a sludge circulation pump that connects an upper part of the sludge mixing tank and the latter stage of the sludge pump may be provided.

Sludge treatment system and sludge treatment method

In a water treatment apparatus, a tilted plate is disposed at an incline relative to a horizontal plane. Water to be treated is passed over the upper surface of the tilted plate. A discharge forming body is disposed across a gas layer above a water film formed by the water to be treated flowing over the tilted plate. A droplet forming apparatus exerts power on the water film so that at least some of the water to be treated shoots upward in the form of droplets.

Water treatment apparatus and water treatment method

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Chiyoda-ku, Japan

Makoto Takata