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Energy audit and efficiency report on data centre 

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Power Distribution  

The data centre power distribution Consumption has been broken down in to IT load , Cooling Power and other loads and efficiency loss in UPS and electrical distribution . 

Cooling power includes complete power consumption of PAHU/PAC units in data centres , Chillers , Pumps and power consumption of PAC unit for UPS and battery room . 

Data centre power

Cooling power( Allocated to data centre )

IT load

Other load and Losses

Power Distribution

213.7kW

106kW

82.3kW

25.3kW

From the above gathered data we can infer that out of the total data centre power which is 213.7kW only 82.3kW is used by the data centre in its IT loads with accounts to 38.5 % of the total data centre power the balance of the power is used by the cooling systems which is 106kW of the power which is 49.6% of the total power consumed by the data centre so the IT loads and the cooling loads consume almost 88.1% of the total power . The rest of the power is used for other loads such as Lighting and losses which account for just 11.9% of the power consumed by the data centre  

An in-depth power distribution 

Type of load 

Power in kW

Percentage of total 

Electrical distribution losses 

3.2

1.5

Auxiliary and various 

2.7

1.3

Cooling systems 

106

49.6

UPS
IT(sub system of UPS)

101.8

47.6

82.3

38.5

Total

213.7

100

 

Site Overview 

IT and Support Room Details 

IT Room 

Room name 

IT Rack 

Total Area 

Network cable Path 

Power cable Path 

Cooling system 

Data Center 2nd Floor

Racks -75

266 Sqm

Overhead 

Under floor 

Twin Coil 10TR – 10 Nos PAHU units Bottom Discharge , Top return Via ceiling void 

Support Room 

Room name 

Total Area 

Equipment Description 

Cooling System 

CIO UPS Room – Basement 1 

91 sqm

UPS 120kVA – 4 Nos (DC) Panels and Batteries

Top discharge and front return units -2 Non CHW PAHU Unit 18TR – 1 Nos 
DX PAC unit 18 TR – 1 Nos

Tower B UPS Room Basement 1 

158 sqm

UPS 60 kVA – 2 Nos 
UPS 160kVA – 5 Nos 
UPS 60 kVA – 4 Nos

Top discharge and front return – 4Nos 
CHW PAHU unit 25TR – 1No
DX PAC unites 25TR – 2Nos
DX PAC ducted unit 16TR – 1No

Lighting loads 

Raw Power and emergency Lights have been installed in Data centre and Support areas

LED Lights have been used for lighting 

Description 

2F Data center 

CIO UPS Room Basement 

TB UPS Room basement 

No of lighting Fixtures 

40

10

14

Types of Lighting Fixtures

LED

LED

LED

Wattage of each Tube in Lighting Fixtures (watts)

34

18

18

Total Power Consumption 

1.36

0.18

0.25

Air conditioning system 

Twin coil ( Chilled water and DX based ) Floor mounts PAHu units are installed for 2nd floor data centre and mix of chilled water based and DX based floor mount PAC units are installed at basement for CIO UPS room and tower B UPS room 

The chilled water units get chilled water from air cooled Trane make Chillers installed on terrace 

 

Room 

Device type Qty

Make 

Capacity 

Data centre 2nd Floor

PAHU units – 10 Nos 
8 working and 2 standby

Stulz

10 TR

CIO UPS Room 

PAC/PAHU units 2-Nos 
1 Working and 1 standby 

Stulz

CW-18TR-1No
DX-18TR-1No

Tower B UPS Room 

PAC/PAHU Units – 4Nos
2 working and 2 standby 

Stulz

CW-25TR-1 No 
DX-25TR -2No
DX-16TR – 1No

Chiller Plant 

Room

Device Type 

Make

Rated Capacity

Chiller Plant

Air cooled Chillers 

Trane

375TR

Primary Pumps

Kirloskar

 20HP

Secondary Pumps 

TECO 

50 HP

Energy Efficiency 

Power Usage effectiveness ( PUE ) and its reciprocal Data Centre infrastructure efficiency (DCiE) are widely accepted standards proposed by green grid to help IT professionals determine how energy efficient data enters are and to monitor the impact of their energy efficient efforts 

PUE = Total power / IT power 

in the case of the data centre that come above the PUE is found to be 2.60