Title:
HEAT STORAGE DEVICE, POWER GENERATION PLANT, AND OPERATION CONTROL METHOD DURING FAST CUT BACK
Document Type and Number:
WIPO Patent Application WO/2020/158941
Kind Code:
A1
Abstract:
Provided is technology to efficiently store and use, in a plurality of different temperature ranges, excess energy generated at a power generation plant. A heat storage device 140 that has a plurality of heat storage units to recover and accumulate heat from a fluid passing through a channel provided therein is characterized by comprising a first heat storage unit that has temperature characteristics in a first temperature range, a second heat storage unit that has temperature characteristics in a second temperature range, which is a lower temperature range than the first temperature range, a first channel 241 that causes inflowing fluid to pass through the first heat storage unit and the second heat storage unit in order, a second channel 242 that causes the inflowing fluid to bypass the first heat storage unit and pass through the second heat storage unit, a first on-off valve 251 that is provided on the first channel 241, and a second on-off valve 252 that is provided on the second channel 242, wherein the first on-off valve 251 is in an open state if the fluid temperature is at a first temperature threshold or higher and the second on-off valve 252 is in an open state if the fluid temperature is less than the first temperature threshold.
Inventors:
YAMAMOTO KENJIRO (JP)
KANEKO SHOZO (JP)
KAN RYOSUKE (JP)
KOBAYASHI YUTA (JP)
KAWAMIZU TSUTOMU (JP)
YAMANA TAKAHIRO (JP)
KOSAKA KENICHIRO (JP)
AMARI TAKESHI (JP)
HIRASAKI DAIJIRO (JP)
NAKAMURA SHINJI (JP)
KANEKO SHOZO (JP)
KAN RYOSUKE (JP)
KOBAYASHI YUTA (JP)
KAWAMIZU TSUTOMU (JP)
YAMANA TAKAHIRO (JP)
KOSAKA KENICHIRO (JP)
AMARI TAKESHI (JP)
HIRASAKI DAIJIRO (JP)
NAKAMURA SHINJI (JP)
Application Number:
PCT/JP2020/003779
Publication Date:
August 06, 2020
Filing Date:
January 31, 2020
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F24H7/02; F01K3/02; F01K27/02; F28D20/02
Foreign References:
| JPS59150257A | 1984-08-28 | |||
| JP2012007796A | 2012-01-12 | |||
| JP2015045483A | 2015-03-12 | |||
| JPH094807A | 1997-01-10 | |||
| JPH08319805A | 1996-12-03 | |||
| JP2014092086A | 2014-05-19 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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