low energy building design crit 2 – group g mandy wardrop | nichola murray | christopher weir |...
TRANSCRIPT
Low Energy Building Design
Crit 2 – Group GMandy Wardrop | Nichola Murray | Christopher Weir | Callum Maloney | Jonathan Donnard | Martin Choné
Crit 2
In today’s presentation we will cover:
Assignment of tasks
Project management
Design geometry
Cooling system
Lighting and ventilation
Website progress
Assignment of Tasks
• Project management• Renewable energy supplies Mandy
• Geometry and materialsNichola
• Geometry and materialsChris
• Cooling system• Demand reductionCallum
• Cooling system• Renewable energy suppliesJonathan
• Lighting and ventilationMartin
Project Management
Week 6-8
• Consider and create sustainable design for technical sub-systems
• Undertake performance and cost appraisals for proposed design
• Continue to update website with design progress• Prepare for Week 9 crit
Week 9-10
• Finalise complete design of data centre, including demand reduction and renewable energy systems
Week 11-12
• Finish web site design• Prepare for final crit
DesignInitial ideas
DesignGeometry
Cooling system
Either water or oil based cooling system
Cools 70% of the heat generated by the IT equipment
Power Usage Effectiveness (PUE) reduced by 33%
Increased energy efficiency over other systems
Less expensive compared to other systems
Cooling system
Pros for water: Local supply – cheap source Low temperature of water year round Could also be used as water supply for
toilets/kitchens
Cons for water: May need some treatment – issues with sea
water Accelerate corrosion of metal parts in cooling
system Needs to be deionized for electronic systems
Cooling system
Pros for oil: It is an electrical insulator so can be in direct contact with
electrical components Liquid systems reduce sound pollution – quieter systems No rust prevention methods required
Cons for oil: Initial capital cost for buying the oil Oil can be flammable Specific heat is about half the value of water so a given
volume of oil may absorb less heat than the same volume of water
Cooling system
Volume of liquid required
Temperature of liquid
Flow rate of liquid
Specific heat of liquid
Total amount of energy required to supply cooling system
Factors we have to consider :
Cooling system
Water cooling system
Cooling system
Water cooling system
Cooling system
Oil cooling system
Lighting
Server rooms: Bi-level lightning Illuminance :
200-600 lux (area in front of the racks) 150 lux (Security)
Occupancy sensors/ sectoring of the room Use of LEDs)
Office Spaces Distinct lighting levels Maximize Daylight (Windows/Roof windows)
Utilisation of DIALux
Lighting
Server rooms: 72 x 70W rectangular LED luminaires 24 x 12W down lights
Ventilation
Server rooms Oil or water cooling system will cool the air Necessity of mechanical Ventilation (No opening) Required air change: 2-10 (Simplified as Warehouses)
Office Spaces Maximize natural ventilation
Oriented perpendicular to summers wind Ridge vents
Air change rate determined by the use of the room Required air change: 2-6
Website
Next steps
Our plan for the next 3 weeks is to:
Consider and create sustainable design for technical sub-systems
Undertake performance and cost appraisals for proposed design
Continue to update website with design progress
Prepare for Week 9 crit