CENTRAL PLANT EXPERIENCE LIST

WESTWARD HO

Downtown's historic Westward Ho is currently being renovated to the tune of $19 Million.  A recent article in the Arizona Republic gave many of the details of the project such as the remodel of the abandoned Thunderbird Ballroom into 32 new one-bedroom units and the renovations of 64 existing studio units which were combined into 32 one-bedroom units within the tower.  Key upgrades to the mechanical system consisted of the addition of two 214 ton chillers with VFD controlled evaporator condenser fans and the associated two-pipe fan coil units within the tenant's rooms.  To accommodate the additional load of the chillers, the electrical system was upgraded to a 3,000 Amp (277/480V) service.

SCOTTSDALE HEALTHCARE
As part of a new 75,000 square foot addition for Scottsdale Healthcare, one of four existing chillers was replaced prior to the start of the Emergency Department construction. The replacement of the existing twenty seven year old 325 ton chiller with a new 800 ton centrifugal chiller increased the total central plant capacity to be 2,450 tons, while allowing the fourth chiller to be used as stand-by. In addition to chiller replacement, the cooling towers, primary and secondary pumps and one 100 H.P. gas fired 100 P.S.I. steam boiler was replaced with a 250 H.P. boiler, along with the expansion of the plate and frame heat exchanger in order to accommodate the increased demands. At the time of initial study, the facility was being served by two existing service entrance sections (one 10,000 amp and one 3,000 amp S.E.S.), while a third 3,000 amp S.E.S. was being constructed to handle present overload demands of the existing 10,000 amp S.E.S. With the addition of the E.D. it was determined that the existing 10,000 amp S.E.S. was not expandable and required replacement. Upon construction completion of the third S.E.S., loads from existing service #1 and #2 were transferred to S.E.S. #2 and #3. This allowed the replacement of S.E.S. #1 with a new 3,000 amp service.  Medical vacuum and air source equipment were replaced with new in order to accommodate the increased demand. The existing vacuum system consisted of two on-line vacuum pumps and two stand-by pumps allowing for the change over of system demands and replacement of two pumps of adequate size to handle existing and new demands, while maintaining two original pumps as emergency back-up. A new medical air plant was installed adjacent to the existing air plant in order to expand the system capacity to meet new demands and provide for system back-up. 

BOWNE - PHOENIX
Design consisted of additional 250 ton R-134a variable speed drive chiller to an existing 250 ton chiller system. Project consisted of necessary chiller, primary/secondary piping, tower, controls and electrical for all new components. This design also included a refrigerant monitoring and exhaust system to meet today's current building and mechanical codes. 1999-2000.

NORTH PHOENIX BAPTIST CHURCH
SDI acted in a capacity of construction manager to a new central plant for this 8,000 member 300,000 square foot church on North Central. The central plant housed a new 650 ton variable speed chiller (with future addition capabilities of a second chiller), primary/secondary piping, cooling tower and associated piping connected into the existing chilled water system. A new EMS system is also being installed. The project is to be completed in April 2000.

PRINCESS RESORT - SCOTTSDALE (FAIRMONT PROPERTY)
Design of central plant consisting of two 650 ton centrifugal chillers and one 200 ton absorption chiller operated off waste heat from 650 kw co-generation unit for the resorts main cooling system. Property consisted of 425 guest rooms, the largest ball room in Arizona, restaurants and pools. Several additions have been made to this facility. In 1998, a 60 room addition was completed and in the year 2000, a 30,000 square foot spa is to start construction. 1988, 1996, 2000.

ACAPULCO PRINCESS RESORT (FAIRMONT PROPERTY)
In 1996, 1997, and 1998 many upgrades were designed by SDI. A new central plant consisting of four (4) 650 ton variable speed R134a chillers were added, along with towers and primary/secondary piping to 5 different areas of the 1,200 room resort. The electrical system was also revised to enlarge the electrical service tapping off a 12KV primary loop and increasing the electrical capacity to the facility for further expansion/ remodeling of ballrooms, convention center and restaurants. 1996, 1997.

MARCUS DE NIZA HIGH SCHOOL
Replacement of two (2) 300 ton centrifugal chillers, pumps, boilers and piping system. 1996.

AXXESS TECHNOLOGIES
New manufacturing facility central plant consisting of two (2) 300 ton centrifugal chillers, tower pumps, plate and frame heat exchanger, and piping system serving a 140,000 square foot manufacturing facility. 1998.

KYRENE SCHOOL DISTRICT
Between 1989 and 1999 added 15 new middle and elementary schools, each with multiple chiller central plants, all with primary/secondary piping systems, plate and frame heat exchanger, energy management system. Central plants ranged from 275 tons to 600 tons depending on school size. Two of the larger projects have chilled water, thermal storage systems that are still working today using off peak power.

FOUR SEASONS RESORT - SCOTTSDALE
Central plant consisted of two (2) 300 ton centrifugal chillers with primary/secondary piping, tower pumps, plate and frame heat exchanger, energy management systems. 1998, 1999, 2000.

SCOTTSDALE HEALTHCARE (OSBORN) - CENTRAL PLANT RENOVATION
Expansion and renovation of the existing hospital central plant, including two new HFC chillers totaling 1,300 tons, pumps, piping, towers and electrical distribution and EMS for the total facility. Design involved adding to cooling capabilities and revising electrical for new addition. Cost over $2M. Scottsdale, Arizona, 1994-95.

MARICOPA COUNTY MEDICAL CENTER CENTRAL PLAN EXPANSION - 1992
Provide design for a new electrical system for the central plant to accommodate new chillers for a major addition to this hospital. Analysis and design involved consolidation of combined metering of power of the new facility with the old facility, Phoenix, Arizona, 1992. Total cost is estimated at $500K.

MOTOROLA, INC., HAYDEN CAMPUS
Mechanical and electrical engineering services for the replacement of Chillers #1, #2, #3, and #4, with three (3) new 600 ton chillers. This project included central plant piping system provisions for the future addition of a plate and frame heat exchanger and a chilled water thermal storage system, Scottsdale, Arizona, 1992.

APS OFFICE AND CENTRAL PLANT RENOVATION
Addition of two 350 ton chillers and renovation of electrical distribution system, Phoenix, Arizona, 1989.

HONEYWELL, INC.
Relocation of two 230 ton chillers, including piping and pumping revision, Phoenix, Arizona, 1989.

MADISON SCHOOL NO. 1
Design of two 200 ton chillers and pumps, piping, boilers, and EMS, Phoenix, Arizona, 1989.

MEDTRONIC MICRO-REL
Addition of four 500 ton chillers for the Central Plant and two boilers and electrical distribution, Tempe, Arizona, 1982 and 1988.

GLENDALE COMMUNITY COLLEGE
Addition of new 850 ton centrifugal chiller and plate and frame to Central Plant, Glendale, Arizona, 1986.

ADVANCED MICRO CIRCUITS CORPORATION (AMCC)
Design of two 325 ton chillers for Central Plant, San Diego, California, 1986.

MOTOROLA WACC - PHASE II
Addition of 450 ton chiller and Energy Management System, Scottsdale, Arizona, 1985.

WESTRIDGE MALL SHOPPING CENTER
Design of new 950 ton central plant, Ft. Worth, Texas, 1985.

ARIZONA STATE UNIVERSITY
Addition of a new 3,000 ton chiller with related pumps, controls, and cooling tower for ASU's Central Plant, Tempe, Arizona, 1983.

ADVANCED MICRO DEVICES (AMD)*
Design of new 1,500 ton central plant with future addition of 2,000 ton, San Antonio, Texas, 1982.



*Indicates individual experience of L. Sullivan.