Kawasaki Jukogyo Kabushiki Kaisha

Yuichi Saitou

Daisuke Kariya

Yoshihiro Matsuda

Yasuo Miwa

Naotaka Yamazoe

Yosuke Kimura

Toshihiro Komiya

Hidetaka Miyazaki

Tomohiro Sakamoto

Keisuke Nakagawa

A raw material gas liquefying device includes a feed line; a refrigerant circulation line; and a controller. In a refrigerant liquefaction route, a refrigerant flows through a compressor, a heat exchanger, a circulation system JT valve, a liquefied refrigerant storage tank, and the heat exchanger, and returns to the compressor. In a cryogenic energy generation route, the refrigerant flows through the compressor, the heat exchanger, an expansion unit, and the heat exchanger, and returns to the compressor. The controller determines if a refrigerant storage tank liquid level is within an allowable range, manipulates a feed system JT valve opening rate to control refrigerant temperature at the high-temperature-side refrigerant flow path exit side of the heat exchanger, and manipulates the opening rate of the feed system JT valve to control the refrigerant storage tank liquid level so that the refrigerant storage tank liquid level falls into the predetermined allowable range.

Raw material gas liquefying device and method of controlling this raw material gas liquefying device

Growing community of inventors

Akashi, Japan

Yuichi Saitou