Compressed air energy storage power generation device

Patent metadata

Field	Value
Publication number	US-2020003116-A1
Application number	US-201816490706-A
Country	US
Kind code	A1
Filing date	Mar 23, 2018
Priority date	Mar 29, 2017
Publication date	Jan 2, 2020
Grant date	—

Abstract

This compressed air storage power generation device 10 is provided with: a power demand receiving unit 60; a cold heat demand receiving unit 61; a power supply adjustment device 19 which adjusts the amount of power generated by a generator 15; a cold heat supply adjustment valve 22 which adjusts the amount of cold heat supplied from a first heat medium storage unit 21 to consumer equipment 3; and a control device which controls the power supply adjustment device 19 and the cold heat supply adjustment valve 22 so as to supply the consumer equipment 3 with power and cold heat corresponding to the power demand value and the cold heat demand value.

First claim

1 . A compressed air energy storage power generation device capable of accumulating renewable energy in a form of compressed air, generating power by using the compressed air as necessary, and supplying power to a consumer facility, comprising:
a power demand receiving unit which receives a power demand value of the consumer facility; a cold heat demand receiving unit which receives a cold heat demand value of the consumer facility; an electric motor driven by power generated by use of the renewable energy; a compressor driven by the electric motor; a pressure accumulation unit which accumulates the compressed air compressed by the compressor; an expander driven by the compressed air supplied from the pressure accumulation unit; a power generator driven by the expander; a power adjustment unit which adjusts the amount of power generated by the power generator; a first heat exchanger which cools a first heat medium by exchanging heat between the first heat medium and cold air exhausted from the expander; a first heat medium storage unit which stores as cold heat the first heat medium cooled in the first heat exchanger; a cold heat adjustment unit which adjusts the supply amount of the cold heat from the first heat medium storage unit to the consumer facility; and a control device which controls the power adjustment unit and the cold heat adjustment unit so as to supply the consumer facility with the power and the cold heat according to the power demand value received by the power demand receiving unit and the cold heat demand value received by the cold heat demand receiving unit.

2 . The compressed air energy storage power generation device according to claim 1 , further comprising:
a hot heat demand receiving unit which receives a hot heat demand value of the consumer facility; a second heat exchanger which heats a second heat medium by exchanging heat between the second heat medium and air discharged from the compressor; a second heat medium storage unit which stores as hot heat the second heat medium heated in the second heat exchanger; and a hot heat adjustment unit which adjusts the supply amount of the hot heat from the second heat medium storage unit to the consumer facility, wherein the control device controls the power adjustment unit, the cold heat adjustment unit and the hot heat adjustment unit so as to supply the consumer facility with the power, the cold heat and the hot heat according to the power demand value received by the power demand receiving unit, the cold heat demand value received by the cold heat demand receiving unit and the hot heat demand value received by the hot heat demand receiving unit.

3 . The compressed air energy storage power generation device according to claim 1 , further comprising:
a third heat exchanger which heats a third heat medium by exchanging heat between the third heat medium and air discharged from the compressor; a third heat medium storage unit which stores as hot heat the third heat medium heated in the third heat exchanger; and a hot heat absorption refrigerator which obtains cold heat by use of the hot heat of the third heat medium stored in the third heat medium storage unit.

4 . The compressed air energy storage power generation device according to claim 1 , further comprising an electric cooler which obtains cold heat by use of power generated in the power generator.

5 . The compressed air energy storage power generation device according to claim 2 , further comprising:
a third heat exchanger which heats a third heat medium by exchanging heat between the third heat medium and air discharged from the compressor; a third heat medium storage unit which stores as hot heat the third heat medium heated in the third heat exchanger; and a hot heat absorption refrigerator which obtains cold heat by use of the hot heat of the third heat medium stored in the third heat medium storage unit.

6 . The compressed air energy storage power generation device according to claim 2 , further comprising an electric cooler which obtains cold heat by use of power generated in the power generator.

Assignees

• Kobe Steel Ltd

Inventors

• Matsukuma Masaki
• Nagahira Ayaka

Classifications

• H02J15/20 Primary

  using storage of pneumatic energy, e.g. compressed air energy storage [CAES] · CPC title

• F02C9/16

  Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057) · CPC title

• F02C6/16 Primary

  for storing compressed air · CPC title

• F02C1/02

  the working fluid being an unheated pressurised gas · CPC title

• H02J15/006

  Electricity · mapped topic