公开(公告)号：US20190145667A1

公开(公告)日：2019-05-16

申请号：US16089994

申请日：2017-03-23

Applicant: NEC CORPORATION

Inventor： Arihiro MATSUNAGA ,  Minoru YOSHIKAWA ,  Hisato SAKUMA ,  Masato YANO ,  Asuka MATSUBA ,  Takafumi NATSUMEDA

IPC: F25B1/00 ,  F28D1/053 ,  F25B41/04

Abstract: Since improving heat exchange between a gas-phase refrigerant and a liquid-phase refrigerant in a refrigeration system could instead result in a reduction in the efficiency of the whole refrigeration system, a heat exchange device (201) of the present invention includes: a refrigerant supply means (210) for supplying a first-temperature liquid-phase refrigerant (R11) and a second-temperature gas-phase refrigerant (R12) in one circulation system; a plurality of heat exchange means (220A, 220B) which are each configured so as to perform heat exchange between the liquid-phase refrigerant and the gas-phase refrigerant; and refrigerant circulation means (231, 232, 242) for circulating the gas-phase refrigerant (R12) in such a manner that the gas-phase refrigerant (R12) flows in parallel in the plurality of heat exchange means, and circulating the liquid-phase refrigerant (R11) in such a manner that the liquid-phase refrigerant (R11) flows in series in the plurality of heat exchange means.

公开(公告)号：US20180269541A1

公开(公告)日：2018-09-20

申请号：US15542511

申请日：2016-01-15

Applicant: NEC Corporation

Inventor： Kenji KOBAYASHI ,  Masato YANO ,  Suguru WATANABE ,  Hisato SAKUMA ,  Koji KUDO

IPC: H01M10/44 ,  H01M10/42 ,  H01M10/0525 ,  H02J7/00

CPC classification number: H01M10/441 ,  H01M10/0525 ,  H01M10/425 ,  H01M10/482 ,  H01M2010/4278 ,  H01M2220/20 ,  H02J3/32 ,  H02J7/0021 ,  H02J7/0047 ,  H02J7/007 ,  H02J2007/005

Abstract: A storage cell control system configured to perform charge/discharge control for a plurality of storage cells under control based on a power adjustment request from a power system includes: a power storage capacity calculating means configured to calculate a current power storage capacity of the storage cell based on storage cell information of the storage cell; a target power storage capacity setting means configured to set a target power storage capacity in stopping an operation of the storage cell; a capacity degradation speed calculating means configured to calculate a current capacity degradation speed and a target capacity degradation speed with respect to each power storage capacity by applying the current power storage capacity and the target power storage capacity to capacity degradation speed correlation information set in advance; and a power distributing means configured to distribute power to the plurality of storage cells in such a manner that when it is assumed that t is an elapsed time from start of operation, a capacity degradation amount DSOCvaried(t) is a time integral value of a capacity degradation speed in a case where the capacity degradation speed varies according to a power storage capacity, and a capacity degradation amount DSOCfixed(t) is a time integral value of a capacity degradation speed in a case where the capacity degradation speed is fixed regardless of a power storage capacity, a capacity degradation amount minimization condition: a capacity degradation amount DSOCvaried(t)≤a capacity degradation amount DSOCfixed(t) is satisfied.

公开(公告)号：US20180259232A1

公开(公告)日：2018-09-13

申请号：US15760345

申请日：2015-09-21

Applicant: NEC CORPORATION

Inventor： Hisato SAKUMA ,  Masato YANO ,  Minoru YOSHIKAWA ,  Masaki CHIBA

IPC: F25B29/00 ,  F25B15/16 ,  F25B13/00 ,  F25B41/06

CPC classification number: F25B29/006 ,  F25B6/02 ,  F25B13/00 ,  F25B15/16 ,  F25B17/00 ,  F25B25/02 ,  F25B29/003 ,  F25B41/06 ,  F25B49/02 ,  F25B2339/047 ,  F25B2600/2507 ,  Y02A30/277 ,  Y02B30/62

Abstract: A cooling system which combines a plurality of refrigeration cycles has a fluctuating cooling capacity. Therefore, a cooling system according to the present invention includes: a first cooling means including a first refrigerant transportation means for circulating a refrigerant that receives heat from an object to be cooled; a second refrigerant transportation means connected to the first refrigerant transportation means, for circulating a diverted refrigerant being a part of the refrigerant; a second cooling means for receiving heat from the refrigerant circulating through the first refrigerant transportation means, and cooling the diverted refrigerant; and a flowrate control means for controlling a flowrate of the diverted refrigerant.