| Abstract: The class
hypothesized that solar radiation penetrating the building interior with limited control
by the building glass envelope would produce high daytime lighting levels causing glare
for the building occupants and on warm days causing thermal discomfort especially at the
higher levels within the atrium. The class further hypothesized that there would be high
levels of energy consumption to maintain thermal comfort, along with periods of occupant
discomfort due to glare and local overheating. Our primary interest lay in understanding
the glass enclosed atrium when addressing the impact of solar radiation. Six specific
locations were identified as representative of the solor impact issues in the atrium. The class identified six critical locations within the context of the atrium,
where the impact and consequences of solar radiation illustrated the issues of excess
visual contrast and overheating. Four of those locations were on the main entry floor.
They were:
- Bookstore counter facing the front entry glass
- Vertical TV monitors above the bookstore counter
- Bookstore counters to the rear of enclosed stairway and
elevator areas
- Information counter at the western end of the atrium space.
The other two critical locations are:
- The third floor cafeteria and fourth floor exhibition area
- The fifth floor corridor which serves to provide an entry to
the exhibits at the higher levels including the culminating exhibit, the Hall of Fame, on
the sixth floor.
The class conducted measurements of lighting conditions and
glazing performance for the atrium space. A computer model was also generated using Lightscape.
Evaluations of thermal performance and occupant comfort were undertaken through field
measurement, occupant survey, and ENER-WIN software.
The students discuss positive and negative aspects of the
building and offer suggestions for improvements to the design. They also suggest topics
for future investigation.
|