South West Data Centre, UK

The customer built a new Data Centre for South West Data Centre inside the existing Data Centre taking up a quarter of the space.

Customer: South West Data Centre

Need: An energy efficient Data Centre with the lowest possible PUE.

Solution: Partnering with South West Data Centre we have fitted our Ultra Energy Efficient DMF065D freecool units to give HLMR the best energy efficient product on the market.

Name of building: South West Data Centre
Year: 2019
Country: England, Plymouth, South West Data Centre
Number of units:

• New Data Centre 3 x DMF065D units with HCD 75-E hybrid condenser / drycoolers
• UPS Room 2 x DMX010U units with DMOUUD100E condensing units

Unit testing on 02.04.19 by DNB 

Using 8 No Heatbanks a 90kW room design load was introduced. 

Each of the 3 No DMF065D units run in freecooling mode with no DX.

The outside ambient was 9.8°C.

The input power to each unit was 2.5kW with a total of 7.5kW input for 3 units.

EER = 90 / 7.5                                                     EER = 12.00

PUE = 90 + 7.5 + 3.6 (UPS losses at 4%)   PUE = 1.12           Cooling PUE = 1.08

                90

Existing D63 Combicool units running on CW as the primary.

Chiller COP estimated @ 3.0

D63 units running @ 6.0kW fan gain each.

Running 3 units at a 90kW load

Chiller load                         30kW

3 x D63 fan gain                18kW

Total input power            48kW

EER = 90 / 48                                                      EER = 1.875

PUE = 90 + 48 + 3.6 (UPS losses at 4%)    PUE = 1.57           Cooling PUE 1.53

                90

At this point in time the saving over the existing system for a 90kW load would be

48kW – 7.5kW = 40.5kW.

Annual saving = 40.5kW x 8760 hrs x £0.12kW/hr = £42,574.

ROI 1 Year 6 Months

Unit 3 was switched off.

The remaining 2 No DMF065D units then run in freecooling mode & partial DX mode.

The outside ambient was now 10.8°C.

The input power to each unit was 7.1kW with a total of 14.2kW input.

EER = 90 / 14.2                                                   EER = 6.34

PUE = 90 + 14.2 + 3.6 (UPS losses at 4%) PUE = 1.20           Cooling PUE = 1.16

                90