midder Flashcards
benefit from fixed shading devices, which blocks the summer sun allowing winter sunlight
south-facing windows
should maximize glazing un hot climates with mild winters
North-facing windows
due to the difficulty in shading these orientations effectively without obstructing views
Minimize east and west glazing
recommended for adaptability, as it accomodates seasonal shifts and weather variations
Moveable shading
deciduous trees act as “moveable” shading devices, shading in summer and allowing sunlight in winter
vegetation as shade
light colored roofs and walls help reduce heat absorption, especially beneficial where direct shading is challenging
reflective surfaces
incorporates eggcrate devices, physical models, and glazing for optimal light control
special shading strategies
effective shading helps perevent what during warmer months
passive solar heating
includes direct, diffuse and reflected radiation each of which requires, tailored shading startegies
solar load
effectively block direct solar radiation, wile diffuse and reflected components may need larger or additional shading solutions
exterior shading devices
orientation specific shading
- south facing windows
- noth facing windows
- east and west facing windows
types of shading devices
- fixed options
- moveable devices
include overhangs, fins and eggcrate structures, each with unique applications based on orientations and climate
fixed options
can adjust transparency in response to temperature, providing dynamic solar control without obstructing views
electrochromic and thermochromic glazing
like awnings and rotating louvers are preferred for dynamic adaptability to daily and seasonal changes
moveable devices
three-tier approach to sustainable cooling
- heat avoidance
- passive cooling
- mechanical system
minimize heat gain using shading, reflective colors and insulation as the first strategy
heat avoidance
implement methods to reduce internal temperatures or shift comfort zones using airflow and natural heat sinks
passive cooling
as a last resort, small and efficient systems supplement heat avoindance and passive cooling where needed
mechanical systems
continuous airflow to maintain indoor temperatures near outdoor levels, mainly humid and temperate climates
comfort ventilation
types of ventilation
- comfort ventilation
- night flush cooling
utilizes cool night air to precool the building mass for the following day, effective in dry or temperate low humidity climates
night-flush cooling
designs use the sky roof or night sky to dissipitate heat
direct and indirect radiant cooling
