Chiyoda Corporation

Satoshi Yasuda

Yoshitsugi Kikkawa

Takashi Okano

Toshiya Momose

Masanori Kameta

Tomoyuki Konda

To safely start and operate electrical devices accommodated in a local electrical room located in a hazardous area, a plant module () includes: a group of plant equipment () that constitutes a plant; a local electrical room () located in a hazardous area () defined by presence of combustible gas and accommodating a power device configured to supply electric power to the group of plant equipment (); a structure () supporting the group of plant equipment () and the local electrical room (); and an outside air supply device () having explosion-proof properties and arranged at the local electrical room () to supply outside air to an inside thereof, wherein the plant module () is configured to supply the electric power to the outside air supply device () from a non-hazardous area.

Plant module, plant including the same, and operation method of plant

An inlet air cooling system used in a gas turbine for supplying power to a refrigerant compressor for compressing refrigerant in a natural gas liquefaction plant includes: an inlet air cooler for cooling inlet air of the gas turbine; chiller motors used for a chiller for cooling coolant supplied to the inlet air cooler; a first variable speed driver for supplying electric power to each of the one or more chiller motors; and an electric generator driven by the gas turbine, wherein the electric generator is electrically connected to the first variable speed driver, and electric power generated by the electric generator can be supplied to each of the chiller motors from the first variable speed driver without using a main power line of an electric power system, which enables efficient electric power supply to the motors via the variable speed driver.

Growing community of inventors

Yokohama, Japan

Satoshi Yasuda