1. L OW E NERGY B UILDING D ESIGN A LEX N IX H AZEL E ASTON E UAN R OBERTSON A LASDAIR H OON D APHNE K OULITSA

2. D ESIGN B RIEF A low energy data centre for a computer company housing large amounts of IT equipment Site Area is 200m x 300m with a maximum height of10m 50 employees, 40 in a open plan area and 10 in cellular offices. Facilities for staff included. Industrial site by the village of Allandale near Bonneybridge The design should maximise the quantity of energy supplied from local sources

3. G ANTT C HART

4. P ROGRESS Ventilation/cooling calculations Renewable energy supply Design of the building Site plan Website

5. R ENEWABLE E NERGY - W IND As determined in the first presentation, on site wind is not viable A new 25MW Wind Farm is being planned at Rullie, approximately 9km from the site It will have 10 126m turbines providing 2.5 MW each Propose installing 3 extra turbines to meet data centre’s needs

6. R ENEWABLE E NERGY - S OLAR In Northern Europe, incoming energy from the Sun is about 110 W/m 2 With a fill factor of 0.8 and efficiency of 0.2 output energy is about 17.6 W/m 2 On site, there is about 62000m 2 of space available for PV panels This translates to just over 1MW maximum solar power output if the land was 100% covered.

7. L IGHTING DESIGN Philips CoreView Panel 41W LED

8. L IGHTING DESIGN Corridor Lighting

9. L IGHTING DESIGN Office Lighting

10. C ONSTRUCTION For security and durability reasons, the data centre will use a reinforced concrete block cavity wall. It has good fire resistance and is suited to high rainfall and insulates sound well. A Kevlar lining improves security further Externally, walls are finished with timber cladding or rendered

11. D ATA C ENTRE D ESIGN

12. D ATA C ENTRE E LEVATIONS

13. S ITE P LAN

15. S ERVER R OOM C OOLING Total Cooling Load – 4987.5kW Cooling per server rack – 8.47kW Q = mc∆T Each server rack requires 0.62m^3/s of cooling.

16. S ERVER R OOM C OOLING 16 336kW coolers Configured to N+1 Standard Each provides air flow rate 23.3m^3/s Air-side free cooling can be used 91.1% of the time Adiabatic cooling used when the temperature is higher

17. H EAT R ECOVERY Mechanical heat recovery to extract heat from servers and transfer it to office space Output server heat is roughly 35 degrees celsius In Summer months, recovered heat can be extracted outside

18. C OSTS Calculated how much energy was consumed in an hour and multiplied by 9pence energy cost Server and cooling energy costs = £4.09 million per year Lighting energy costs = £7671 per year Kitchen appliance energy costs = £630.72 per year Other costs = £671,323 per year Total energy costs = £4.77 million per year Average energy costs per rack = £6925.68 per year

19. D ATA C ENTER E FFICIENCY Power Usage Effectiveness (PUE) measures the overall efficiency of the data center PUE = Total Facility Power/IT Equipment Power = 6074.66kW/5000kW = 1.2149 Average PUE value in 2014 is 1.7 Google’s data center has a PUE of 1.12