track to see it at least that fast.
Charles Davis, project manager at Wooten, based in Raleigh, N.C., noted that the projected energy savings via the
VPSA option helped to fund the project. “We were able to
get a $500,000 grant from our North Carolina Energy Offce
that was tied to the American Recovery and Reinvestment
Act (ARRA),” he recalled. “The remaining funding was from
our state‘s Infrastructure Finance Section,
a revolving loan at
Davis said that after following an RFP vendor selection process, the decision was based on more than just cost.
“Proposals had to show benchmarks for system turndowns
of 40-50%,” he explained. AirSep met that criteria. “As it
turned out, they were able to perform even greater than ex-
pected in that regard,” he added.
“They were also very helpful by providing equipment and
fabrication drawings up front [and] also assisted later in training plant operators in maintenance and troubleshooting, as
well as with plant startup,” he continued. “[They] worked
closely with us to achieve a seamless transition from the for-
mer oxygen system
to the new one.”
attend to it daily, babysitting it during
multiple shifts each day,” he said. “The
new system has freed up operators for
other tasks, and I’m looking forward to
seeing further savings result from that.”
“Our client is already exceptionally
pleased,” he said, “and has told us so
in no uncertain terms.”
CUSTOM-ENGINEERED VPSA SYSTEM
“The treatment plant was running
off of LOX for quite some time since Circle No. 25 on Reader Service Card
The custom-engineered VPSA system, available in actual tonnage requirement, offers automatic turn-
down and idle for 700 HP motor (center). Former high-speed turbines and compressors have been re-
placed by simple low-speed blowers, including vacuum blower (left) and feed air blower (right).
Silencers for vacuum blower discharge (left
front), feed air intake (right front), vacuum
blower suction inlet (left rear), and feed air
blower discharge (right rear) complement the
user-friendly operator interface.