For this 435,000 square foot high rise, ROI acted as the Mechanical System Architect for the Owner, working with a production engineering firm that had already been retained by the Architect.

A combination of Thermal Energy Storage and Low Temperature Air delivery were utilized to reduce the height of the facility by 23'.  The construction savings made possible by the height reduction were great enough to completely pay for the TES and chiller plant systems, and the TES system and Low Temperature Air systems combine to reduce the operating cost of the facility by approximately $0.60 per square foot.  TES installation incentives of slightly over $500,000 obtained by ROI  from the local utility made the system even more cost effective.

DDC zone controls are used to provide information to allow the complete reset of the static pressures and supply air temperatures, based on the actual loads in the zones.  

The air distribution system in this facility operates for most of the year at 0.35 w.c. to 0.45" w.c. discharge static pressure, and 55° F to 60° F supply air temperatures. On peak load days, the supply air temperature is dropped, and the static pressure is increased to respond to the demands of the tenant spaces.

5200 West Century | 701 B. Street | 801 Figueroa Street
Aircraft Cooling (PCA) | LA County Sheriff's Headquarters Building