Server room managing air conditioning system

Patent metadata

Field	Value
Publication number	US-9648788-B2
Application number	US-201514677160-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Mar 15, 2011
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

In accordance with embodiments, a server room managing air conditioning system includes: a first coil; a second coil; and an air supply fan. The first coil adjusts returned air of a server room to a predetermined temperature value lower than a supplied air temperature target value and dehumidifies the returned air. The second coil adjusts the returned air of the server room to a predetermined temperature value higher than the supplied air temperature target value so that the supplied air temperature target value and a supplied air humidity target value can be achieved when the returned air is mixed with air adjusted by the first coil. The air supply fan mixes the returned air and supplies the mixed returned air as the supplied air to the server room.

First claim

The invention claimed is:

1. A server room management air conditioning system in which the air conditioning system performs an air conditioning of the server room in an all circulation mode in which outside air is not introduced but supplied air is manufactured by an action of returned air and supplied to the server room, the server room management air conditioning system comprising:
a plurality of cooling coils which adjust the returned air of the server room;
an air supply fan which mixes the supplied air adjusted by the plurality of cooling coils to supply as the supplied air to the server room;
a first control device which obtains an outside air temperature measurement value, an outside air humidity measurement value, a supplied air temperature measurement value, a supplied air humidity measurement value, a supplied air volume, and a value that indicates load states of servers in the server room, and based on the obtained values,
determines a number of the cooling coils among the plurality of cooling coils as first coils to be used for adjusting the returned air of the server room to a predetermined temperature value lower than a predetermined supplied air temperature target value to perform dehumidification,
determines a number of the cooling coils among the plurality of cooling coils as second coils to be used for adjusting the returned air of the server to a predetermined temperature value higher than the supplied air temperature target value so as to adjust the returned air of the server room to the supplied air temperature target value and a predetermined supplied air humidity target value when the returned air is mixed with air adjusted by the first coils, and
determines cooling coils to be used as the first coils and cooling coils to be used as the second coils so that the first coils are biased to specific cooling coils.

2. The server room management air conditioning system according to 1 , further comprising:
a second control device which turns off the first coils when the supplied air humidity measurement value falls below a lower limit value of a supplied air humidity target range including the supplied air humidity target value and turns on the first coils when the supplied air humidity measurement value exceeds an upper limit value of the supplied air humidity target range.

3. The server room management air conditioning system according to claim 2 , further comprising:
a second control device which determines a cooling volume for the returned air by the first coils so as to minimize a difference between the supplied air humidity measurement value and the supplied air humidity target value.

4. The server room management air conditioning system according to claim 1 , further comprising:
a second control device which determines a cooling volume for the returned air by the first coils so as to minimize a difference between the supplied air humidity measurement value and the supplied air humidity target value.

Assignees

• Toshiba Kk

Inventors

• Murayama Dai
• Takagi Yasuo
• Hanada Yuuichi
• Ootani Hideyoshi
• Kinoshita Tomoyuki
• Morimoto Hiroshi
• Takahashi Koubun

Classifications

• H05K7/20745

  within rooms for removing heat from cabinets, e.g. by air conditioning device · CPC title

• F24F3/153

  with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature · CPC title

• F24F3/1405

  in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit · CPC title

• G05D23/1931

  to control the temperature of one space · CPC title

• F24F3/14

  by humidification; by dehumidification · CPC title