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Experience
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Sysco Food Services of Los Angeles
City of Industry, California
SubZero provided specialty design/build services to Sysco for a 61,000 square foot
expansion to their existing 420,000 square foot distribution center. Cold storage
expansion included a 24,000 square foot freezer, a 3,400 square foot ice cream freezer,
a 12,000 square foot cooler, and a 5,000 square foot will-call cooler/freezer. Engineering
and design services included a study to determine the feasibility of upgrading the
existing R-22 refrigeration system to serve the expansion.
To meet the rigorous demands of this fast-track project an industrial refrigeration
skid was shop fabricated and set into a second story engine room expansion. The
skid was pre-wired and piped with semi-hermetic screw compressors and a PLC control
system. Ceiling-hung air units were installed in the coolers and a penthouse was
constructed above the freezer. Air units are circuited for direct expansion and
hot gas defrost. Refrigerant piping utilized a combination of ACR tubing and A53
steel. The refrigeration system and controls were designed to meet Edison SBD incentive
plans for energy efficiency. Based on this energy-efficient design, Sysco was reimbursed
$40,000 upon completion of the project.
The insulation system consisted of 4 and 6-inch insulated metal panel walls. High
speed rolling doors actuated by floor loops and fast-fold doors actuated by motion
sensors were installed in the cold storage areas. Freezer under-floor construction
consisted of high density extruded polystyrene floor insulation and self-regulating
electric heating cable in conduit buried in the sub-slab, with floor sensors to
monitor under-floor temperature. A PLC control system provides control and monitoring
of room temperatures, refrigerant sensors, compressor sequencing, variable frequency
drives on the condenser and penthouse air unit fans, and demand defrost of the air
units.
The expansion, the first at this facility, makes it Sysco's largest California
distribution center with the highest annual revenue in the US. Construction was
completed in March of 2002.
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