Osaka Prefectural Government

Other

Nishiyodo Air Conditioner Co., Ltd.

Daido Sanso Kabushiki Kaisha

Osaka Prefecture Government

Yasuhiro Hatano

Toshikazu Nosaka

Masami Ogata

Atsushi Kakitsuji

Hiroki Miyamoto

Yukio Fujishima

Akira Aoki

Kei Miyamoto

Taizo Imoto

Kazumune Nakao

Yukitoshi Hatano

Tamotsu Ishikawa

Tadashi Takatuka

Tohru Isoda

Toshimasa Irie

Masayuki Kawabata

Toshiaki Oura

Shuhei Miyauchi

Takeshi Ohara

A primary object of the present invention is to easily and securely fix a photocatalyst to a substrate. According to the invention, there is provided a process for preparing a photocatalyst material, the process comprising a first step of forming an undercoating containing silica gel on a substrate, a second step of bringing titanium tetrachloride into contact with the undercoating and a third step of heat-treating the coated substrate.

Method for producing photocatalyst material

A method of operating a heat pump having at least one circuit for circulation of a refrigerant comprising a compressor, a once-through path, complete counterflow type condenser as a high-temperature heat output means, an expansion valve and a low-temperature heat output means (evaporator or a segregated low-stage circuit for circulation of a lower-boiling-point refrigerant), which comprises choosing a supercool degree, which is equal to the difference between a saturation temperature and an outlet temperature of the refrigerant, to satisfy the conditions that a temperature effectiveness of refrigerant liquid as defined by the formula: ##EQU1## is at least 40% and the temperature difference of the denominator is at least 35.degree. C. As a result, boiling water of ca. 100.degree. C. or other high-temperature fluids can be discharged with a large temperature difference.

Method of operating heat pump

The invention provides a method of disposing of polychlorinated biphenyls without causing a health hazard to the public in which the polychlorinated biphenyls are converted into harmless and useful compounds. This is accomplished by the hydrogenation-dechlorination thereof.

Method for the disposal of polychlorinated biphenyls

Growing community of inventors

Sakai, Japan

Yasuhiro Hatano