Cooling Technology for Network Node

1. Cooling Technology for Network Node

2. • Facilitator
• Network Node
• Cooling Technology
• Industry Trend : Power and Cooling
• Cooling Technology Selection
• PUE Calculation : Thumb Rule
• Bangladesh : Real Life Scenario
Agenda

3. Facilitator

4. 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

5. 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
Chiller
Applicable
[Small & Medium]
Water Coolant
Technology
Air Cooled Water
Chiller
Water Cooled
Water Chiller
Applicable
[Medium & Large]

6. Free Cooling Technology

7. Chemical Coolant (DX) Technology

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. Bangladesh : ISP’s POPs

11. Bangladesh : NTTN’s POP

12. 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

13. Cooling Technology Selection
Rack Power
Comfort
1 – 20 TR
VRF
1 – 20 TR
Precision
20 – 200 TR
DX Chiller
200 – 300 TR
ACWC
300 – 400 TR
WCWC
400+ TR

14. Question-Answer and Feedback

15. PUE Calculation : Thumb Rule
Cooling
Technology
ICT Power
[100 KW]
Cooling
Power
Other Power
[HR + NOC]
Total OpEx PUE
Natural Free 100 KW 10 KW 10 KW 120 KW 1.2
Kyoto Wheel 100 KW 15 KW 10 KW 125 KW 1.25
Comfort AC 100 KW 150 KW 10 KW 260 KW 2.6
VRF AC (3 Stage) 100 KW 140 KW 10 KW 250 KW 2.5
Precision AC 100 KW 130 KW 10 KW 240 KW 2.4
Air Cooled DX
Chiller (H Screw)
100 KW 125 KW 10 KW 235 KW 2.35
Air Cooled
Water Chiller
100 KW 115 KW 10 KW 225 KW 2.25
Water Chiller
(Centrifugal)
100 KW 65 KW 10 KW 175 KW 1.75
Water Chiller
(Helical Screw)
100 KW 50 KW 10 KW 160 KW 1.6

16. Cooling Technology : Thumb Rule
Cooling Technology PUE [< 100 KW] PUE [100 – 1000] PUE [< 1000 KW]
Natural Free Cooling 1.2 1.25 1.3
Kyoto Wheel 1.25 1.3 Not Feasible
Comfort AC 2.6 Not Feasible Not Feasible
VRF AC 2.5 2.5 Not Feasible
Precision AC 2.4 2.6 Not Feasible
Air Cooled DX Chiller Not Feasible 2.35 2.25
Air Cooled Water Chiller Not Feasible 2.25 2.2
Water Cooled Water
Chiller (Centrifugal)
Not Feasible 1.75 1.65
Water Cooled Water
Chiller (2 Helical Screw)
Not Feasible 1.6 1.5

17. Bangladesh : Real Life Scenario
Network Node
Avg.
Rack
Number
Power
/ Rack
Total ICT
Power
Total
Cooling
Power
Cooling
System
Remarks
ATM Booth 2 1.1 KW 2.2 KW 3 TR Comfort AC 2 x 2.5 TR
Enterprise POP 2 2.2 KW 4.4 KW 6 TR Comfort AC 2 x 5 TR
ISP POP 2 2.2 KW 4.4 KW 6 TR Comfort AC 2 x 5 TR
Telco POP 4 2.2 KW 8.8 KW 12 TR Comfort AC 4 x 5 TR
NTTN POP 6 2.2 KW 13.2 KW 18 TR Comfort AC 5 x 5 TR
ISP DC 6 3.5 KW 21 KW 27.5 TR Precision AC 4 x 10 TR
Small EDC 20 3.5 KW 70 KW 91 TR Precision AC 4 x 30 TR
Telco DC 20 5.5 KW 110 KW 143 TR Precision AC 5 x 36 TR
NTTN DC 20 5.5 KW 110 KW 143 TR Precision AC 5 x 36 TR
IXP 30 5.5 KW 165 KW 214 TR DX Chiller 3 x 120 TR
Large EDC 50 5.5 KW 275 KW 193 TR ACWC 2 x 200 TR
Colocation IDC 100 4.4 KW 440 KW 308 TR ACWC 2 x 300 TR

18. For Your Patience and Support