2.  Design a data centre for a large computing company  To have high efficiency standards  Utilise renewable technology  To be an exemplar in design for future data centres

3.  5MW IT equipment that has to be continuously cooled to prevent over heating  Fail safe power supply  Fully functioning office space to hold forty staff and ten security with catering space

4. All loads calculated for one of four individual server rooms BTU values based from online calculator Occupants Not normally occupants in server room except for maintenance Assuming worst conditions – assume max of 5 people Occupants BTU = No of occupants x 400 = 5 x 400 = 2000BTU or 590Watts Equipment Number of racks x wattage per rack = 90 x 14700 = 1323000Watts Solar Gains No windows in server room so no solar gains Ignored any gains/losses through walls due large heat gains inside.

5. Floor Area of Room Amount of cooling depends on area of the room Room area BTU = Length(m) x Width(m) x 337 = 20 x 17 x 337 = 114580BTU or 33600Watts Lighting Overcompensating as lights will not be on most of time Total wattage of lighting x 4.25 = 750 x 4.25 = 3188BTU or 930Watts Total Cooling Load Total = 590 + 1323000 + 33600 + 930 = 1358120Watts or 1.358MW

7. Fan, Filtering and Mechanical Cooling unit Based on Stulz Cyber Air with direct Free Cooling and fold away heat exchanger. Air Flow Capacity – 10.28m3/s Require Units Per room = 86.66/10.28 = 9 Units required In Direct Free Cooling mode the heat exhanger folds away and allows conditioned ambient air to flow in. Warmer Temps – Heat exchanger folds in and refrigeration based cooling is done through integrated compressors

8. System Specs Compressor Power Consumption – 22.4kW Fan Power Consumption – 7.8kW No of Fans per Unit – 3 One Server Room 9units x [22.4 + (7.8 x 3)] = 412.2kW Total Power Demand for Cooling System 4 Rooms x 412.2 = 1.65MW

9. Materials Reflection Comfort Required Illuminance Bulb Selection Daylight

10. Open Plan Office Low energy consumption with LED technology Different color temperature options (3000K/4000K/6500K) 0-10V Dimming Even Distribution of Light Individual Office Low energy consumption with LED technology Suitable for Detailed office work 0-10V Dimming Data Hall/ Toilets Less illuminance required Dimmer Switch Multiple sensor compatible Vestel Panellight 28W Thorlux Panellight 33W Sharp YUMA Downlighter 14W

11. AreaRequired (lux)Achieved (lux) Open400 462 Individual350 410 Server room200 228 Toilets250 289

12.  Demand  Simulation with daylight Simulations done at 9am, 12pm and 6pm throughout the year to check if natural light meets the required illuminance. Natural light reduces Artificial light hours.

13. Requirement OPEN PLAN AERA : CELLULAR OFFICES : SECURITY AERA : CANTEEN AERA : TOILET AERA : AREA OF PASSAGE : Air change/h 454863 Surface m 2 40010020030050150 Volume m³ 1200300600900150450 Total Air Flow (m³/h) 48009002400720012001350 Ventilation SECURITY

14. Hybrid Ventilation Natural ventilation No requirement in electricity Use local natural energy : wind Wind : - average speed : 10km/h - main direction : out of South West

15. Hybrid Ventilation Natural ventilation : Design - Direct natural ventilation openings depending on the prevailing wind (South-West) - airflow velocity as to be maintain between 0.1 and 0.15 m/s in the building Requirement OPEN PLAN AERA : CELLULAR OFFICES : SECURITY AERA : CANTEEN AERA : TOILET AERA : AREA OF PASSAGE : Openings’ Suface (Vents) 8,641,604,3212,962,162,43 Size of each Vent (m 2) 0,480,400,480,720,540,60 Number of Vent 1849 44

16. Hybrid Ventilation Mechanical ventilation However, wind may be an random ressource so we need to install a mechanical ventilation to provide fresh air when there is not enough wind.

17. Heat Loss Requirement OPEN PLAN AERA : CELLULAR OFFICES : SECURITY AERA : CANTEEN AERA : TOILET AERA : AREA OF PASSAGE : Air change/h 454863 Volume m³ 1200300600900150450 HEAT LOSS (W) 1900859409504285123564534671874 Heat loss formula : Cv : specific heat capacity of air (J/kg K) N : Number of air change per hour V : Volume Dt : Difference between indoor and outdoor temperature

18. Heating System - Recover the heat from the servers to heat the rooms - Exhausted air temperature from servers 33-35 degrees C. - A part of the heat of the servers is collected before the cooling system and redistributed through conduits - No need to consume extra energy

19. GGBFS Concrete Ancon TeplTie – Teplo 1Wall ties SVP Waterproof membrane Gypsum Plaster U-value = 0.15 W/m

20.  GGBFS Concrete slab  Kingspan Thermaroof TR26  Waterproof membrane  Gypsum plaster  U-value = 0.14 W/m2K

21.  GGBFS Concrete slab  Kingspan Thermaroof TF70  Membrane  Gypsum plaste  U-value = 0.13 GlazingPilkinton EnergiKare – K Glass OWU-value = 0.8 W/m^2K

22.  Relative Humidity – 40-55% (ASHRAErecommendation)  Humidity and temperature sensors  Measuring absolute humidity

23. Sharp ND-R250A5 Nominal output 250W Module Efficiency 15.2 % Dimensions 1652 x994 x46 PV Farm 6250 panels South facing Angle 35 degrees

24. Average Irradiance per month on site MonthJanFebMarAprilMayJuneJulyAugSepOctNovDec Kwh/m^212.5230.257.4110.3137.6141.9125.7109.266.836.417.79.2

25. Energy output of PV Farm over 1 year Total Electrical capacity per year- 1,000,256kwh

26.  Using a website builder to create website  Finalising the theme

27.  Final Presentation - Finalise monthly Office Heating and Cooling calcs -Drawings -Look at any advice -Finalise renewable capacity -Compliance with initial brief  Showcase Data centre design  Showcase website progress