High Performing Buildings - Fall 2010 - (Page 16)

the building team added 17 skylights to light the main studio and second floor office space. the skylight openings are designed to maximize daylighting, while high performance glass blocks unwanted heat gain. the office is primarily lit by natural light during working hours. occupancy and daylight sensors help ensure that artificial lighting is only used when needed. © david Wakely Entering air is slightly cooler than ambient air, so it’s denser and stays low. The air warms and rises when heated by factors such as the natural heat plumes that surround occupants. One benefit of displacement ventilation is that occupied air stays cleaner and healthier for occupants. For example, if someone coughs 16 HigH Performing into the air, germs move up into the open space away from coworkers. The displacement ventilation also complements the radiant heating and cooling slab; heating and cooling provided at the occupied zone level is not disturbed by the air, as compared to a conventional air handler system in which the air in the space would be completely mixed. Thus, the radiant heating and cooling slab maintains acceptable thermal comfort at wider ranges of indoor air temperatures. The temperature setpoint in the zones during the winter is 69°F and fa l l 2 0 1 0 78°F during the summer, which is within ASHRAE Standard 55-2004’s acceptable range of comfort. Occupants perceive temperatures at the edges of this range as comfortable because they sense heat or cold transfer from the radiant slab in a direct and immediate way. lighting In a high performing building such as this, an electric lighting system must provide high lighting quality while minimizing lighting power density. To succeed, lighting designers need to leverage the latest in Buildings

Table of Contents for the Digital Edition of High Performing Buildings - Fall 2010

High Performing Buildings - Fall 2010
Table of Contents
IDeAs Z2 Design Facility
Lighting Design Alliance
Manassas Park Elementary School and Prekindergarten
FC Gulf Freeway Office Building
Capturing Condensate
National Australian Built Environment Rating System
Tyson Living Learning Center

High Performing Buildings - Fall 2010