PASSIVE ARCHITECTURAL COOLING FOR THREE STOREY OFFICE BUILDING DESIGN CONCEPT

PASSIVE ARCHITECTURAL COOLING FOR THREE STOREY OFFICE BUILDING DESIGN CONCEPTRTU Working group: KRISTAPS SAFRANOVS, JURIS SOROKINS, NATALY KUZNECOVA, JEKATERINA NAZAROVA, JANIS LUSIS ALEKSANDRS ZAJACS

PASSIVE BUILDING DESIGN PRINCIPLEConventional design Integrated design

SHAPE SOLAR PATH SUSTAINABILITY

NSEW

BUILDING ENVELOPE

Key Features:

Structural support

Thermal resistance

Controls

Aesthetic

BUILDING ENVELOPE

North facadeSouth facade

DAYLIGHT FACTOR2-5%

ILLUMINATION OF ROOMS

December 24th June 24th March 24th

RIGA SUN PATH

INTERNAL COMFORTComfort of the work environment:Solar gainGlare (contrast)

South facadeNorth facade

EXTERNAL EXPOSURE FACTORSOutside temperatureClimate

Solar radiationSun path

Wind

EXTERNAL EXPOSURE FACTORSWind pressure

Pv = 0.5 * l * v2ref

Pv wind pressure, Pa;l air density , kg/m3.

Vref = Vmeteo * k * ha

Vmeteo known wind speed in certain area, m/s;k factor depending on terrain (0,68 open flat terrain, 0,21 megalopolis);h height from the ground surface to the air intake, m; a factor depending on placement (0,17 shore line, 0,33 - city).

ConclusionsBuilding is elipse-shaped which gives the best area of the envelope /building space ratio and adapts to the sun path;Increased proportion of glazed facades benefits daylight factor and has a positive impact on residents' health, wellbeing and productivity;At the same time this increase cooling load of working space, that's why office area is located on the North sideBuilding use reflected sun light instead of direct, which reduse glare effect;The use of atrium contributes building sustainability by provision of natural ventilation;The aim of the architectural passive cooling is achieved by setting correct lines of action BUILDING SHAPE, SOLAR PATH, SUSTAINABILITY.

PASSIVE ARCHITECTURAL COOLING FOR THREE STOREY OFFICE BUILDING DESIGN CONCEPTRTU Working group: KRISTAPS SAFRANOVS, JURIS SOROKINS, NATALY KUZNECOVA, JEKATERINA NAZAROVA, JANIS LUSIS ALEKSANDRS ZAJACS