Academy Museum for Motion Pictures, Los Angeles, CA, USA

Academy Museum for Motion Pictures

Renzo Piano Building Workshop is planning the Academy Museum of Motion Pictures in Los Angeles. The museum will be placed in the refurbished “May Company Department Store” building from 1938. A new “bubble” shaped building will be added at the north side with a 1000 seat theatre and a semi-outdoor terrace (1.200 sm / 13,000 sf) with a fully transparent glazed canopy on top.
Transsolar was responsible to maximize thermal and visual comfort for this fully glazed terrace in the hot and sunny Californian climate. Throughout the year, this space shall exhibit milder perceived temperatures compared to outside and should not suffer from a green-house effect. Visual connection to the outside should be maximized.
To avoid overheating and glare, movable internal shading screens will be installed with bright outer surface colours to reflect a large proportion of the solar radiation out of the dome. The shading will have low-emissivity surface facing the terrace space to avoid heat being radiated onto visitors. The shading will be perforated to allow a visual connection to the outside. Natural ventilation openings in the dome ensure the heat captured in the shades can escape without reaching to the occupied zones.
Proper ventilation will be achieved with openings on both opposite sides of the dome, that allow cross ventilation. In addition sealable roof openings will help to increase the airflow, by taking advantage of the thermal stack effect. Retractable wind shields helps to reduce the air velocities on the terrace to avoid draft situations in winter. In addition to all passive measures, the terrace floor can be mildly conditioned using a thermal active slab system embedded in the terrace floor, enhancing the thermal experience of visitors.
It is shown with thermal simulations that overheating hours can be limited to approximately 10% of the occupied times. Hours to be considered slightly cooler than a fully conditioned interior space are estimated to be approximately 1% of the occupied times.