design a data centre for a large computing company to have high efficiency standards utilise...
TRANSCRIPT
Data Centre Design
Group ECritique 3
Brief
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
Data Centre Requirements
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
Cooling LoadsAll loads calculated for one of four individual server roomsBTU values based from online calculator
OccupantsNot normally occupants in server room except for maintenanceAssuming worst conditions – assume max of 5 people
Occupants BTU = No of occupants x 400 = 5 x 400 = 2000BTU or 590WattsEquipmentNumber of racks x wattage per rack = 90 x 14700 = 1323000Watts
Solar GainsNo windows in server room so no solar gainsIgnored any gains/losses through walls due large heat gains inside.
Cooling Loads - Continued
Floor Area of RoomAmount of cooling depends on area of the roomRoom area BTU = Length(m) x Width(m) x 337 = 20 x 17 x 337 = 114580BTU or 33600WattsLighting Overcompensating as lights will not be on most of timeTotal 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
Volume Flow rate
Identifying A SystemFan, 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
Power DemandSystem SpecsCompressor Power Consumption – 22.4kWFan Power Consumption – 7.8kWNo of Fans per Unit – 3
One Server Room9units x [22.4 + (7.8 x 3)] = 412.2kW
Total Power Demand for Cooling System4 Rooms x 412.2 = 1.65MW
Lighting
• Materials • Reflection• Comfort
Required Illuminance
• Bulb Selection• Daylight
Bulb SelectionOpen 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
Dialux Results
Area Required (lux) Achieved (lux)
Open 400 462
Individual 350 410
Server room 200 228
Toilets 250 289
Energy Consumption 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.
Requirement
OPEN PLAN AERA :
CELLULAR OFFICES :
SECURITY AERA :
CANTEEN AERA :
TOILET AERA :
AREA OF PASSAGE :
Air change/h 4 5 4 8 6 3
Surface m2 400 100 200 300 50 150
Volume m³ 1200 300 600 900 150 450
Total Air Flow(m³/h)
4800 900 2400 7200 1200 1350
VentilationS
EC
UR
ITY
Hybrid VentilationNatural ventilation
No requirement in electricity
Use local natural energy : wind
Wind : - average speed : 10km/h
- main direction : out of South West
Hybrid VentilationNatural 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)
8,64 1,60 4,32 12,96 2,16 2,43
Size of each Vent (m2)
0,48 0,40 0,48 0,72 0,54 0,60
Number of Vent 18 4 9 18 4 4
Hybrid VentilationMechanical 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.
Heat Loss
Requirement
OPEN PLAN AERA :
CELLULAR OFFICES :
SECURITY AERA :
CANTEEN AERA :
TOILET AERA :
AREA OF PASSAGE :
Air change/h 4 5 4 8 6 3
Volume m³ 1200 300 600 900 150 450
HEAT LOSS(W) 19008 5940 9504 28512 3564 5346 71874
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
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
Wall Construction
• GGBFS Concrete• Ancon TeplTie – Teplo 1
Wall ties • SVP• Waterproof membrane• Gypsum Plaster
• U-value = 0.15 W/m
Roof Construction GGBFS Concrete slab
Kingspan Thermaroof TR26
Waterproof membrane
Gypsum plaster
U-value = 0.14 W/m2K
Floor Construction GGBFS Concrete slab
Kingspan Thermaroof TF70
Membrane
Gypsum plaste
U-value = 0.13
GlazingPilkinton EnergiKare – K Glass OW
U-value = 0.8 W/m^2K
Condensation Relative Humidity – 40-55%
(ASHRAE recommendation)
Humidity and temperature sensors
Measuring absolute humidity
PV Panels
•Sharp ND-R250A5•Nominal output 250W•Module Efficiency 15.2 %•Dimensions 1652 x994 x46
•PV Farm•6250 panels•South facing•Angle 35 degrees
PV Panels
Average Irradiance per month on site
Month Jan Feb Mar April May June July Aug Sep Oct Nov DecKwh/m^2 12.52 30.2 57.4 110.3 137.6 141.9 125.7 109.2 66.8 36.4 17.7 9.2
PV Panels
Energy output of PV Farm over 1 year
Jan
Feb
March
April
MayJu
ne July
AugSe
p OctNov
Dec
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
10,000 m^2 panels
6250 pannels Kwh
Total Electrical capacity per year- 1,000,256kwh
Website Using a website builder to
create website Finalising the theme
Next Presentation
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