公开(公告)号：US10358975B2

公开(公告)日：2019-07-23

申请号：US15570993

申请日：2016-05-02

Applicant: Kobe Steel, Ltd.

Inventor： Masaki Matsukuma ,  Kanami Sakamoto ,  Hiroki Saruta ,  Masatake Toshima ,  Yohei Kubo

IPC: F02C6/16 ,  F04C29/04 ,  F02C7/18 ,  F02C7/141 ,  F01D25/14 ,  F02C6/14 ,  F02C7/16 ,  F02C7/12 ,  F02C7/143

Abstract: A compressed air energy storage and power generation device comprises a motor, a compressor, a pressure accumulation tank, an expander, and a generator. The motor is driven by a fluctuating input power. The compressor is mechanically connected to the motor and compresses air. The pressure accumulation tank is fluidly connected to the compressor and stores air compressed by the compressor. The expander is fluidly connected to the pressure accumulation tank and is driven by compressed air supplied from the pressure accumulation tank. The generator is mechanically connected to the expander and generates power to be supplied to a user. A cooling water flow path, whereby water flows inside a cooling water pipe for cooling air that is a working fluid, is provided inside a casing of the compressor. As a result, a compressed air energy storage and power generation device can be provided that is capable of efficiently reducing compressive axial force and of reducing power consumption.

公开(公告)号：US10344628B2

公开(公告)日：2019-07-09

申请号：US15572441

申请日：2016-04-22

Applicant: Kobe Steel, Ltd.

Inventor： Yohei Kubo ,  Masatake Toshima ,  Masaki Matsukuma ,  Hiroki Saruta ,  Kanami Sakamoto

IPC: F01K27/02 ,  F01K27/00 ,  F02C1/05 ,  F02C6/16 ,  F28D20/00 ,  H02J15/00 ,  F01D15/10 ,  H02K7/14 ,  H02K51/00 ,  F01K3/12 ,  F02C1/04

Abstract: A compressed air energy storage power generation device 2 includes a compressor, a pressure accumulator tank, and an expander. The compressor compresses air by being driven with renewable energy. The pressure accumulator tank stores the air compressed by the compressor. The expander is driven by the compressed air. A power generator is mechanically connected to the expander and generates electric power, which is to be supplied to a demander. The compressed air energy storage power generation device includes: first heat exchanges for recovering compression heat; temperature sensors that measure the temperatures of the heat media having the temperature increased by the first heat exchangers; high-temperature heat medium tanks, each of which individually stores the heat medium depending on the temperature thereof; second heat exchangers for heating compressed air; a low-temperature heat medium tank that stores the heat medium having the temperature decreased in the second heat exchanger; and a control unit that switches high-temperature heat storage switching valves to thereby supply the heat medium from the first heat exchangers to either of the high-temperature heat medium tanks.