Nec Corporation

Nirmal Singh Rajput

Minoru Yoshikawa

Hisato Sakuma

Yoshinori Miyamoto

Kenji Kobayashi

Masaki Chiba

Koichi Todoroki

A system () for controlling an air conditioner () includes a plurality of pressure sensors () and a controller (). Each of the pressure sensors () is positioned at an air inlet () of each of the racks (). The controller () is configured to receive pressure values from the pressure sensors () and control an airflow rate of the cooling air supplied from the air conditioner () based on the pressure values. The controller () is configured to set a target pressure value for each pressure sensor () (S), acquire a current pressure value for each pressure sensor (S), calculate a pressure drop value for each pressure sensor () between the current pressure value and the target pressure value (S), and adjust the airflow rate based on a maximum value among the plurality of the pressure drop values (Sto S).

System, method, and program for controlling air conditioner output for rack pressure regulation

A cooling device includes: a duct that guides air that has absorbed heat generated inside a cooling target and has been discharged, to the cooling target; a cooler that is provided in the duct and cools the air flowing inside the duct; and an adjusting mechanism that is located on a downstream side of the cooler, adjusts an amount of the air discharged from the duct into a room where the cooling target is installed.

Cooling device, cooling system, and cooling method

A server rack includes an air inlet configured to intake air from outside of the server rack, an air exhaust outlet configured to exhaust air to an outside of the server rack, an inlet temperature sensor configured to measure the temperature of inlet air, a heat exchanger provided at an air exhaust outlet of the server rack, a power consumption sensor provided to a power supply of the server rack and configured to measure electrical power consumption of the server rack, and a heat exchange controller configured to control heat exchange between the heat exchanger and the exhaust air based on measurements from the inlet temperature sensor and the power consumption sensor.

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Tokyo, Japan

Nirmal Singh Rajput