Value Delivered
This client chose EMCOR Services Mesa Energy to upgrade their central plant based on our extensive experience and turnkey capabilities. We provided complete end-to-end delivery of solutions that help maintain energy-efficient, high-performance operation with long-lasting value.
All our mechanical, electrical, and structural engineering drawings were approved by the city to ensure code compliance. To limit traffic interaction, we scheduled and managed crane services overnight on a Friday when both local traffic and tenant occupancy were minimal.
Our Optimum Loop Control System provides ongoing monitoring and commissioning, contributing to their new central plant’s annualized average of .5kW per ton versus their former 1.1 kW per ton.
Overall, our solutions provide regulatory compliance, and help to improve facility comfort, productivity, energy efficiency, and system control.
Their new, energy-efficient systems garnered an $83,438 rebate from Southern California Edison.
Client Objectives
The client needed to upgrade its central plant systems and efficiency to meet new regulatory standards.
Solutions
For their new chiller plant, we installed the following equipment, all with VFDs and two-contactor bypass assemblies:
- Two 285-ton chillers
- Two new 20-horsepower chilled water pumps
- Two new 20-horsepower condenser water pumps
- Tenant loop cooling tower
We also provided the following comprehensive solutions:
- Developed complete mechanical, electrical, and structural engineering drawings, approved by the city for code compliance
- Created a construction schedule, including equipment lead-times and system downtime
- Removed a wall section of the penthouse, to rig old and new equipment in and out of the chiller room, and replaced it with steel double-access doors
- Decommissioned and removed equipment including centrifugal and reciprocating chillers, chilled and condenser water pumps, and a tenant loop cooling tower
- Set new equipment on the roof for rigging into place
- Retrofitted the airside built-up vane axial fans with two 150-horsepower and two 50-horsepower VFDs on the supply and return fan motors, respectively
- Provided an American Society of Heating, Refrigerating and Air-Conditioning Engineers Standard 15 monitoring and ventilation system in the chiller room
- Optimized the waterside with Optimum Loop Technology as part of a primary variable flow system that enables significant energy and cost savings
- Installed all required piping, fittings, pumps, valves, and pipe insulation
- Installed a refrigerant leak detection and management system to bring the central plant into compliance with mechanical code
- Modified the existing motor control center with new power circuits, breakers, and service disconnects to power the new central plant in accordance with national electrical code
- Upgraded direct digital controls
- Performed adjustments and tie-ins to meet the needs of the new equipment
- Managed startup and commissioning, including delivery of all submittals, start-up reports, warranties, and operation manuals, as well as client operational and maintenance training
Client Background
Three Hutton Centre is a Class A office tower in close proximity to retail, restaurant, and hotel amenities, and the John Wayne Airport/Orange County.