Presentation by Khan Muhammad Fuad Bin Enayet at APRICOT 2018 on Monday, 26 February 2018.

1. Cooling Technology for Network Node

2. • Network Node
• Cooling Technology
• Industry Trend : Power and Cooling
• Cooling Technology Selection
• PUE Calculation : Thumb Rule
• Transformation Towards Efficiency
Agenda

3. Network Node
• POP
• ICT Room
• Enterprise DC
Metro Scale
• Peering Point
• IXP (Internet
Exchange Point)
Regional Scale
• Colocation DC
• Internet DC
(Carrier Hotel)
Global Scale

4. Cooling Technology
Free Cooling
Technology
Natural Free
Cooling
Kyoto Wheel
Strainer Cycle
Not Applicable
[Weather Dependency]
Chemical Coolant (DX)
Technology
Comfort AC
VRF
Precision AC
Air Cooled DX
(+Water) Chiller
Applicable
[Small & Medium]
Water Coolant
Technology
Air Cooled Water
(+DX) Chiller
Water Cooled
Water Chiller
Applicable
[Medium & Large]

5. Free Cooling Technology

6. Chemical Coolant : Down Flow

7. Chemical Coolant : In Row

8. Water Coolant Technology

9. Trend in ICT : Power and CoolingStatisticsofYearlyWorldAverage
PerRackPowerDensity[*IBM]
• Year 1995 1.1 KW
• Year 2000 2.2 KW
• Year 2005 3.5 KW
• Year 2010 4.4 KW
• Year 2015 5.5 KW
• Year 2020 7.0 KW
• Present Maximum Power
Density / Rack 30 KW
StatisticsofYearlyBangladesh
AveragePerRackPowerDensity
• Year 1995 No Data
• Year 2000 1.1 KW
• Year 2005 1.6 KW
• Year 2010 2.2 KW
• Year 2015 2.8 KW
• Year 2020 3.5 KW
• Present Maximum Power
Density / Rack 7.0 KW

10. Structured Cabling and Cooling

11. Relation : Power, Heat, Cooling
Power | Heat
1 KW of Power Consumption = 1 KW of Heat Generation
Heat | Cooling
1 KW of Heat Generation = 1 KW of Cooling Requirement
Cooling | Power
1 KW of Cooling Requirement ≠ 1 KW of Power Consumption

12. Cooling Technology Selection
Cooling
Technology
VRF AC
Comfort AC
1 – 20 TR
Precision AC
20 – 100 TR
DX (± DF)
Chiller
100 – 200 TR
ACWC (± DF)
200 – 400 TR
WCWC (±DF)
400+ TR
Immersion
30 – 130 KW
Power / Rack

13. PUE Calculation : Thumb Rule
Cooling Technology ICT Power Cooling NOC, Office Total Power UPS Power PUE
Free Cooling 1 KW 0.20 KW 0.1 KW 1.30 KW 1.1 KW 1.3
Comfort AC 1 KW 0.80 KW 0.1 KW 1.90 KW 1.1 KW 1.9
VRF System 1 KW 0.75 KW 0.1 KW 1.85 KW 1.1 KW 1.85
Precision AC 1 KW 0.70 KW 0.1 KW 1.80 KW 1.1 KW 1.8
DX Chiller (Scroll) 1 KW 0.65 KW 0.1 KW 1.75 KW 1.1 KW 1.75
ACWC (Screw) 1 KW 0.50 KW 0.1 KW 1.60 KW 1.1 KW 1.6
WCWC (Magnetic) 1 KW 0.35 KW 0.1 KW 1.45 KW 1.1 KW 1.45
WCWC (Screw) 1 KW 0.50 KW 0.1 KW 1.60 KW 1.1 KW 1.6
WCWC (Centrifugal) 1 KW 0.60 KW 0.1 KW 1.70 KW 1.1 KW 1.7
Measurement
PDU Level
Green DC
PUE < 1.5
Inefficient DC
PUE > 2.0

14. Transformation Toward Efficiency
Public POP
instead of
Enterprise
Infrastructure Sharing
Public Cloud
instead of
Enterprise
Public POP
to IDC
Node Accumulation
Public Cloud
to Cloud DC
Cooling
Efficiency
Improvement in PUE
UPS and
Electrical
Efficiency

15. Question-Answer and Feedback

16. For Your Patience and Support