New Ventilation System Could Reduce Energy for Ventilation in Hospitals by One-Third

Tue Feb 3, 2009 1:22pm EST

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Mazzetti & Associates Completes First `Displacement Ventilation` System for an
Acute Care Hospital in North America - Saving Energy and Money
SAN FRANCISCO--(Business Wire)--
Consulting and engineering firm Mazzetti & Associates announced today that they
finished work on North America`s first `displacement ventilation` system for a
patient room in an acute care hospital. The system was installed in the Kaiser
Permanente facility in Modesto, California, as a test to see whether
displacement ventilation-which differs from conventional ventilation in placing
air outlets low on side walls, rather than on the ceiling-could offer energy
savings while maintaining comfort and infection control. 

"Displacement ventilation systems are used in many other types of buildings, but
they haven`t been used in hospitals due to concern about patient safety and
comfort," said Arash Guity, Chief Climate Change Engineer, at Mazzetti &
Associates. "We expect to start seeing this system to be used in more hospitals
across the country. There is great potential with displacement ventilation to
provide safety and thermal comfort while delivering significant energy savings."

Mazzetti & Associates have partnered with design and consulting firm Stantec on
the pilot project. Initial research findings have indicated that displacement
ventilation has the potential to reduce energy savings by up to 30 percent,
while still maintaining infection control. The second phase of research results
will be released in early 2009. 

"Displacement ventilation systems can be designed and constructed at prices
competitive with traditional ventilation systems," said Guity. "In some cases,
there are configurations of displacement ventilation systems that can actually
be cheaper to install than conventional systems." 

As energy prices rise at the same time a hospital building boom is underway,
Guity believes that sustainable building technologies such as displacement
ventilation will be seen in hospitals. 

"Because they operate 24-7 and are full of equipment, hospitals use tremendous
amounts of energy, which really eats into the bottom line," said Guity.
"Technology like displacement ventilation has a significant potential for
lowering operating costs in the future for an organization like Kaiser

Founded in 1962, M&A is a full-service mechanical, electrical, plumbing, and
technology consulting and design firm. It has offices in San Francisco, Irvine
and Sacramento, Calif.; Nashville, Tenn.; Baton Rouge, La. and Houston. The firm
serves the healthcare, mission critical, science and technology, and higher
education sectors. M & A was one of the first engineering firms in the U.S. to
add a climate consulting practice to their list of client services, offering
advice on measuring, reducing and monetizing client greenhouse gas emissions.
They are a two-time winner of the Champions for Change Award from Hospitals for
a Healthy Environment (H2E). 

Mazzetti & Associates
Emily Toliver, 415-364-7257

Copyright Business Wire 2009

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