Commercial wireless BAS

摘要

Wireless technologies offer attractive opportunities to reduce capital construction costs for commercial BAS through reduction in installation labor. Installation of wireless sensing devices eliminates the labor required to open walls, abate asbestos, run wiring and conduit, and work after hours. Typically, installation labor represents 50% to 60% of the cost to install a BAS. Wireless technology can reduce the labor required to install a single space temperature sensor by 90% to 95%. For example, the labor required to install a space temperature sensor for a variable air volume (VAV) terminal unit is reduced from 2 hours (hardwired through the wall) to only 10 minutes. The functionality and innovation of wireless devices enable a high degree of design flexibility in a variety of applications. The list of applications and success stories grows every day; for an overview of how wireless technology is being applied, see the ZigBee Alliance and EnOcean Alliance examples.