The Project: Akron Thermal District ChillerCJL Engineering is providing Mechanical and Electrical Engineering services to Akron Thermal, the district energy provider for the City of Akron, Ohio. Located in center-city Akron, a new 1,000-Ton steam absorption chiller, and a 1,000-Ton cooling tower were designed to accommodate district needs. Akron Thermal Cooling, LLC provides chilled water cooling to a section of Downtown Akron that includes a 2 million sq. ft. office building, a light industrial park, the Akron Aeros Baseball Stadium, and the Akron Civic Theatre. The plant is operated under an agreement with Akron Thermal, LP.
CJL Engineering Design Solutions:
The new 1,000-Ton chiller will be piped in parallel to the existing plants 1,000-Ton
chiller.
Increased electrical capacity was designed to support the new chiller
pumps and cooling
tower fan motors.
Structural Engineering included the design of new concrete floor and
building shell
expansion to support the new chiller, associated pumps and
controls.
The Project: The Project: Northside Chilled Water Plant SystemNorthside Medical Center gained a substantially expanded Chilled Water Plant as a direct result of Forum Healths comprehensive Master Facility Plan and Implementation.
CJL Engineering Design Solutions:
Upgrade Central Chilled Water Plant to 4,000-Ton capacity by the addition of two 1,200-Ton
chillers. One existing 400-Ton and 1,200-Ton chillers remained.
In surgery units require colder temperatures and tight humidity control, so a supplemental
chiller was added to reduce water temperatures from 46 degrees F. to 38 degrees F. during
peak cooling times.
Assess and inventory existing equipment to verify conditions to assure that the expanded
system plant would function properly.
The plants size grew by 110,000 sq. ft. of expansion space.
The Power Plant was modified to accommodate the expanded plant.
The Project: University of Pittsburgh, Johnstown Krebs and Biddle HallsTwo of the original administrative/classroom buildings on The University of Pittsburgh at Johnstown (UPJ) are Krebs and Biddle Halls. Anchoring the Campus Quadrangle, these buildings originally opened in 1967, along with the Student Union. The aging mechanical systems in these 40+ - year-old structures were in need of replacement. CJL Engineering was hired to assess and redesign new HVAC Systems for these highvisibility campus buildings.
CJL Engineering Design Solutions:
Replaced the original air-handlers with new (35,000 cfm 45,000 cfm) components that
were designed in such a way that the individual wall panels and HVAC components could
be transported individually through the extremely limited access openings.
Through our vast network of contacts, our firm teamed with Tillman Associates of Houston,
Texas to develop the replacement strategy. The unique assembly components provided by
Tillman allowed for an extremely quick rebuild (one week). This significantly reduced
downtime and the corresponding interruption to the building occupants.
The Project: University of Pittsburgh Upper Campus Chilled Water Plant and Hi-Pressure SteamCJL Engineering provided the mechanical and electrical engineering design for the 5,100-ton upper campus chilled water plant for the University of Pittsburgh. The plant was designed to serve six buildings on the upper campus. The massive 7,000 sq. ft. plant is 30 feet high, and houses three 900-ton and two 1200-ton chillers. Five 1,100-ton cooling towers are mounted on the roof.
CJL Engineering Design Solutions:
A primary, secondary pumping system utilizes a primary chilled water pump for each chiller,
and three secondary pumps with variable speed drives. The total capacity of the pumping
system is 8,160 gpm designed for a 15 degree F. delta T. Three condenser water pumps with
variable speed drives handle all of the condenser water flow.
Underground 20 chilled water piping, along with 12 high-pressure steam, 6 pump
discharge, and 2 high-pressure return, were installed in a common 10 side trench. The
steam system consisted of over 1,000 ft. of high-pressure and six steam vaults.
An 11,000 kW electrical load is provided by two university substations at 4,160 volts.
Both the normal and back-up feeds have five runs of 8kV, 750 kcmil, MV90 cable.
The Project: Cambria County War Memorial ArenaThe Cambria County War Memorial Arena is a multi-purpose sports and exhibition facility. In a recent expansion/renovation, the arena gaining Central Air-Conditioning, new seating, improved public access, and ADA Compliance. While the Ice Rinks inslab piping remained intact, the system was totally upgraded.
CJL Engineering Design Solutions:
New Chilled Water Plant has two 300-Ton chillers, and also serves the adjacent
Frank J. Pasquerilla Conference Center.
New hot water heating system designed.
Central station air-handling units and a 4-pipe heating and cooling system serve the HVAC
needs of the building.
Rink refrigeration: low temperature ice building chiller, evaporative condenser, Ethylene
Glycol pumps for rink piping, and redundant compressor/pumping arrangement.
Specialized Air Exhaust System for indoor truck/auto events.
