Seen Question Flashcards
Fabric first
Considering buildings components and materials and maximising them so not to use mechanical
Improves energy effienecy, reduce carbon emissions
Passivhaus
Night purging- cooking at night opening windows
Exploitation of internal heat sources
Air tight
Why ventilate?
Reduce CO2 levels Remove bad bacteria Remove moisture Remove odours Remove dangerous dust Air movement and cooling
Light
Site orientation (solar heat gain) Solar shading (brise soleil) Albedo Proximity of buildings
Thermal
Site location (exposure to elements and latitude and altitude) Minimise draughty Good insulation reduce UV value Thermal mass Air tight Avoiding thermal bridging
Acoustics
Windows lets in noise outside
Thermal mass poor acoustics with reverberation and flutter echoes
Water
Rainwater
Reclaim and reuse grey water
Solar panels
May need mechanical to prevent legionnaires
Fire
Compartmentalisation prevents cross vent
Grills in walls for cross vent an also be smoke dampers
Uni building
Toilets Kitchen Lecture hall Workshops Computer Not used all year round
Natural ventilation
Single sided Roof mounted Passive stack Cross Free cooling
HVAC
Thermal mass good for night time cooling
Sometimes require mechanical thus mixed mode such as in lecture hall to improve air change rate
Pros of natural vent
Effective for night time cooling Low cost Simple Good occupant control Quiet
Cons of natural vent
Lacks security
Let’s in noise
Outside must be cooler
Pollution not suitable for deep plan
Free cooling
Hollow core concrete
Cool pool/ evaporation from fountain
Chilled beam
