Which one of the following is a device that uses circulating chilled water to remove heat?

Question

Options

• AComputer Room Air Handling Unit (CRAH)
• BComputer Room Air System Unit (CRAS)
• CComputer Room Air Suspension Unit (CRAS)
• DComputer Room Air Suppression Unit (CRAS)

• A
  92% (46)
• B
  2% (1)
• C
  4% (2)
• D
  2% (1)

Explanation

A computer room air handling unit (CRAH) is a device that uses circulating chilled water to remove heat from the data center environment. A CRAH consists of a fan, a coil, and a filter. The fan draws the warm air from the data center and passes it through the coil, where the heat is transferred to the chilled water. The chilled water is supplied by a chiller or a cooling tower, and the cooled air is returned to the data center. A CRAH is different from a computer room air conditioning unit (CRAC), which uses a refrigerant instead of chilled water to cool the air.

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