Coolant requirements
General thermal requirements
The following table lists the coolant requirements that the facility must meet in order to support an
Parameter | Value |
|
|
Maximum heat load operational chilled water temperature 1 | 7°C (45°F) minimum |
Minimum | |
Maximum | 13°C (55°F) maximum |
Chilled water flow rate (maximum) 1 | Approximately 80 lpm(21 gpm) |
Approximately 159 lpm (42 gpm) | |
Inlet/outlet water connections to | |
Inlet/outlet hose connections to facility | |
Hose insulation thickness | 6.3 mm (0.25 inch), min. closed cell |
Condensate discharge tubing | 3 m (118 inch) length, |
| 8 mm (0.31 inch) outer diameter, |
| 6 mm (0.24 inch) inner diameter |
|
|
Overflow tubing | 3 m (118 inches) length, |
| 15 mm (0.59 inch) outer diameter, |
| 9 mm (0.35 inch) inner diameter |
|
|
Chilled water pressure differential at required flow | 1 - 1.5 bar (15 – 22 psi) required 1 |
Cooling capacity 1 | 30 kW maximum |
50 kW maximum | |
| (Performance is affected by water |
| temperature) |
|
|
1For more information, see "Determining heat load capacities (on page 72)."
2For more information, see "Plumbing considerations (on page 46)."
Perform the following steps to confirm that the coolant requirements and corresponding resources necessary for effective implementation of the
1.Determine the maximum server heat load capacity.
2.Determine the desired server intake temperature. For more information, see the Rack Cooling Sizing Chart in "Cooling loop sizing (on page 72)."
3.Consult the building cooling system administration, and obtain the maximum coolant temperature, for example, 12.5ºC.
4.Find the amount of coolant required. For more information, see "Coolant source planning (on page 45)."