Central Utility Plants
Alabama Power Company Headquarters Complex
- New Central Plant, Phase 1: Prime consultant for the design of 5,500 square foot central plant building to house hot water boilers and centrifugal chillers to serve adjacent 1.2 million square foot headquarters complex. Piping from central plant (2-16” chilled water, 2-6” hot water) was routed under pedestrian crosswalk from parking deck over city street. Hot water system included 2-1560 kW boilers, associated pumps, distribution piping, and plate & frame heat exchangers that replaced existing steam shell and tube heat exchangers. Central Plant included provisions for future installation of one 1500-ton and two1000- ton centrifugal chillers, cooling towers, plate & frame waterside economizer, and pumps. New automation controls were interfaced with existing Building Automation System.
- New Central Plant, Phase 2: Prime consultant for the installation of two 1,000-ton centrifugal chillers, two 1,000-ton cooling towers, condenser water filtration system, plate & frame water-side economizer, associated pumps, ASHRAE Standard 15 ventilation system, and automation system. Cooling towers were mounted on a service platform located on the roof of central plant building. New chilled water system operates in parallel with existing ice storage system.
VA Medical Center: Emergency Generator Fuel Tank Replacement
- Emergency Generator Fuel Tank Replacement: Prime consultant for replacement of existing underground fuel tanks with new aboveground fuel tanks for two emergency generators.
VA Medical Center: Emergency Chilled Water Connections
- Emergency Chilled Water Connections: Prime consultant for the addition of piping connections at existing chilled water central plant and at several other locations on campus to allow for the connection of temporary chilled water services. Scope of work also included contingency planning for locations and required capacities for temporary equipment.
VA Medical Center: Boiler Plant Replacement
- Boiler Plant Replacement: Prime consultant for the replacement of existing steam boilers with 4 – 13,800 lb/hr 200-psi steam boilers. Construction was phased so that at least two boilers were available for use at all times. Scope of work also included installation of all new ancillary system components including deaerator, boiler feed pumps, water softener system, condensate storage pumps, chemical treatment system, and new automation / boiler management / boiler monitoring system.
DCH – Regional Medical Center
- Boiler #2 Flue Modifications: Provided mechanical engineering services for modifying flue for an existing 600 Bhp boiler to correct venting problems. Power ventilator with variable speed controller was utilized.
- Boiler Plant Automation: Provided mechanical engineering services for complete modernization of boiler plant controls. Boiler plant consists of 2-600 Bhp and 2-300 Bhp steam boilers and associated equipment.
- Cooling Tower #1 Modifications: Provided mechanical engineering services for upgrading capacity of existing 1,000-ton ceramic cooling tower to 1,150 tons.
- Chiller Plant Automation: Provided mechanical engineering services for complete modernization of chiller plant controls. Chiller plant consists of 1-1000 ton and 3-1150 ton centrifugal chillers, associated cooling towers and pumps.
- Chiller #2 Replacement: Prime consultant for replacement of existing 750-ton chiller with 1,150-ton chiller. Upgraded ceramic cooling towers from 750-ton capacity to 1,150-ton capacity. Replaced associated pumps and interfaced chiller with new automation system
- Secondary Chilled Water System: Provided study of existing secondary chilled water system and made recommendations for improving performance of chilled water distribution system. Implementation of recommendations resulted in the reducing the chilled water demand from the central plant and enabled the chillers to operate in an N+1 manner during the summer. Previously, all chillers were required to operate to meet secondary system demand requirements.
- Chiller Plant Piping Modifications: Provided mechanical engineering services for modifying chilled water and condenser water piping to allow pumping redundancy. Plate & frame heat exchanger was also added to allow for waterside economizer use. Chiller plant controls and sequences were modified as required to allow for new system operations.
Bartow Arena: University of Alabama at Birmingham
- As the Prime Consultant, provided Project Management and Mechanical engineering design services at this 8,500 seat multi-purpose facility for the installation of replacement mechanical system, including (2) 455-ton water-cooled chillers, (2) 1365 GPM cooling towers with Variable Frequency Drives for tower fan motors, (1) 7½ Hp duplex control air compressor, (2) Chilled Water Pumps and (2) Condenser Water Pumps. Retained the services of Architect, Structural and Electrical engineers as subconsultants. Construction budget $1.3 million.
Birmingham Jefferson Convention Complex
- Chiller Replacement: Prime consultant for the installation of one new 1300-ton centrifugal chiller to existing absorption chiller. Scope of work also included ASHRAE Standard 15 ventilation system.
- Cooling Tower Replacement: Prime consultant for the replacement of existing wood cooling tower with new 1300 ton, stainless steel, quad-cell induced draft cooling tower. Scope of work also included new condenser water pumps, cooling tower filtration system, and new controls for interfacing with existing building automation system.
- Chiller Plant Interconnection: Prime consultant for piping modifications to allow interconnection between Main Mechanical Plant and East Mechanical Plant.
- Boiler Automation: Prime consultant for replacement of existing boiler controls for three existing dual fired steam boilers. Purpose of control upgrade was to increase boiler efficiency, document fuel use and steam production, monitor operation in control room, and provide alarms.
- Generator Replacement: Prime consultant for the replacement of existing emergency generator located in boiler plant.
- Water Softener Replacement: Provided mechanical engineering services for the replacement of the original water softener system with new system tanks and controls.
- Chiller Conversions: Retrofit of four centrifugal chillers and conversion from R-11 to R-123
Chiller Plant Study: University of Alabama at Birmingham
- Centrifugal chillers range from 110 tons to 4,000 tons each. Thirty-one centrifugal chillers provide chilled water needed for air conditioning in a total of 64 UAB buildings. Fifty-six of these buildings are on the Central Utilities System. This system is comprised of three plants, with 38,100 tons installed capacity. The underground chilled water piping ranges from 6 inch to 36 inch in diameter. Sixteen (16) smaller centrifugal chillers totaling 5,684 tons are located in eight decentralized buildings. Provided an evaluation and report of capital replacement costs, developed budgets and prioritized replacement schedule.
Engineering Building: University of Alabama at Birmingham
- Prepared study evaluating conditions in existing computer room and provided recommendations to correct existing cooling problems; provided mechanical engineering services for renovating existing 1,000 SF classroom for use as a modern computer-training lab.
Administration Building: University of Alabama at Birmingham
- Prime consultant for removal of existing 600-ton chiller/cooling tower and replacement with two 300-ton centrifugal chillers and cooling towers. Chillers and cooling towers were located in penthouse on the fourteenth floor. Scope of work also included replacement of domestic water booster system and hydro-pneumatic storage tank, cooling tower filtration system, ASHRAE Standard 15 ventilation system, and upgraded motor control center. Changeover was completed during Christmas Holiday without disruption to normal building operations.
Central Plant No. 2 & 3: University of Alabama at Birmingham
- Prime consultant for addition of 2,000-ton chiller/cooling tower with infrastructure to support future 2,000-ton addition. Design included primary and secondary chilled water pumps, condenser water pump, cooling tower platform, and control automation. Prime consultant for removal of existing 350-ton and (2) 450-ton chillers and cooling towers with (2) 700-ton chillers and cooling towers. Provisions were also made for the addition of future 700-ton chiller/cooling tower. Scope of work also included re-piping plant as primary/secondary chilled water distribution, renovation of existing plate & frame heat exchanger, new electrical switchboard and motor control center, cooling tower filtration system, ASHRAE Standard 15 ventilation system, and full plant automation system. Work was performed during academic year without disruption to normal building operations.