Extra! Extra! Read All About It.
State-of-the-Art HVAC Renovation Completed With No Down-Time For 24 Hour Newspaper Operation.
San Jose, California...The San Jose Mercury News' 30 year old headquarters building located at 750 Ridder Park Drive in San Jose, California was in dire need of a major HVAC renovation. The large Northern California regional newspaper which operated 24 hours a day, needed a cost effective way to renovate the building without disrupting its daily operations. The goal of the renovation was to convert the existing constant air volume systems to variable air volume systems with DDC controls.
Unique HVAC Design
This system design was not feasible because the newspaper operated 24 hours a day. Employees could not be moved to another location within the building or to another building. The installation of a typical VAV system would have had a significant impact on the working environment and productivity of the employees. Management at San Jose Mercury News needed a cost effective solution.
Terry Kearny of Mechanical Engineered Services, local representative for Warren Technology, John Karamanos, Senior Sales Engineer, York International and Ralph Dorotinsky, Vice President Therma Inc., teamed up to propose a state-of-the-art system design utilizing Warren's Leopard Intellivent® personal VAV diffusers.
Jerry Polk, V.P. of Operations and Engineering Manager Larry Bonanti evaluated the alternate design/build proposal along with a number of other designs. After an intense evaluation, it was decided to go ahead with the Warren-Therma-York project. The estimated cost savings over the original base bid system was more than $450,000.
The project covered over 140,000 square feet of office space and was completed at a cost of under $700,000. As a result of the energy savings achieved versus the previous constant volume system, the company received a $50,000 rebate from Pacific Gas & Electric.
Putting It All
All 291 of the Leopard Intellivent® slave models were fitted with quick connects which enabled the variable air volume diffusers to receive signals from the York DDC controllers. In response to a signal from the controller, the Intellivents® built-in VAV mechanism modulates to a more open or closed position to precisely meet the individual temperature requirements in each room.A Novel Idea Does The Trick
One major problem that presented itself was how to effectively install the wiring between each Intellivent® diffuser and subcontroller without disrupting the employees who were working. Mr. Karamanos and Mr. Dorotinsky borrowed an idea from their medieval ancestors; a crossbow was used to shoot the wiring over the top of the ceiling tiles. An ingenious solution that reduced the installation time dramatically.
Keeps Presses Running
Due to its patented high velocity dimple-jets and VAV device, the Leopard Intellivent® maintains a high discharge velocity even during reduced airflow to maintain optimal room air circulation. Patented dimple-jets direct airflow parallel to the ceiling to eliminate downdrafts and stagnant air pockets.
Eric Lattona, Facilities Supervisor stated, "You could feel a difference in the way air was circulating right after the first phase was completed." He said several employees made comments to him on how much more comfortable they were after the Intellivents® were installed.
Facility Manager Jim Thurman was extremely pleased with the outcome and dramatic reduction in employee comfort complaints. "The new system is operating 300% better than the old constant air volume system it replaced," Jim said. "We have several other reconstruction projects in the works and I can see the Leopard Intellivents® playing a key role on all future HVAC renovations."
|© Copyright Warren Technology 1997-2014.
All Rights Reserved. |
Users of this site agree to be bound by the terms of the Warren Technology Web Site Rules and Regulations.