Project: ODRC Allen Correctional HVAC Upgrade

Owner: Ohio Department of Rehabilitation and Correction

Year: 2014-15

Cost: $4,541,250

Project Manager: Hamid Mukhtar, PhD, PE

Scope: Existing facility is 25+ years old. Based on the life expectancy of the equipment all the existing equipment has surpassed itís useful life. However, with the available construction budget, options were defined to replace equipment that need immediate replacement. Further, over the years some systems have been modified, such as some of the boilers, fire alarm system and etc. Facilities desire to provide a DDC system to manage the entire site would further require evaluation of systems throughout the facility.

A Program of requirement was developed after our team conducted field investigation to validate/develop a program of requirement for the project. POR option included upgrading existing MEP systems such as, Air Handlers & condensing units, piping modifications, chillers, VAV ., DDC and all associated electrical work to bring the systems up to todayís code requirement and functionality throughout the facility.

Project: BWC Tower HVAC Upgrade

Owner: Bureau of Worker’s Compensation

Year: 2010

Cost: $3,000,000

Project Manager: Hamid Mukhtar, PhD, PE

Scope: POR report was developed to evaluate feasibility of existing ice storage system. A life cycle analysis was performed for different options. Scope included: Replacement of chillers & pumps, Modifications to the existing pumps and piping, New condenser water storage tank addition, Control system upgrade, Coding Tower Refurbishment, Associated electrical and structural work. Alternates were also provided. Phasing and bypasses were provided so as not to interrupt coding to data center.

Mechanical: The primary scope of work included the replacement of (4) original 750-ton nominal ton ice-making chillers rated at 460 tons in ice-making mode with (4) 640 ton centrifugal chillers and creating N+1 redundancy to provide uninterrupted cooling to Data Center. Conversion from ice-making system to chilled water system due to existing ice system being undersized. All HVAC equipment specified was energy efficient and provided the owner with energy rebates. New pumps, condenser water storage tanks and controls.

Electrical: All electrical systems were also evaluated to balance the loads on electric buses, single point failure analysis was conducted to upgrade the electrical system to N+1 (tier-2).

Structural: Elevated platforms on the 13th floor and on the roof, design of 3000 gallon condenser water storage steel tank, framing support for the tank, five (5) 750 ton chiller platforms. 34th floor roofing openings and lifting crane steel framing support for air handling units/water cooling towers. Upgrade and commissioning were provided.

Project: Secrest, Giffin 2 Pipe to 4 Pipe HVAC Upgrade

Owner: Ohio Veteran’s Home

Year: 2013-15

Cost: $4,000,000

Project Manager: Hamid Mukhtar, PhD, PE

Scope: Replacement of existing 425 2 pipe Fan Coil units with 4 pipe units, eliminating change over system and adding new chilled water loop. POR was developed and included Existing system assessment, Life Cycle Cost analysis, Cost Estimates. This project is completed with limited swing space availability and coordinated with 2 other ongoing projects at OVH.

Mechanical: Convert the existing two-pipe heating and cooling system to a four-pipe system in the Giffin Care Facility and the Secrest Nursing Home located at the Ohio Veterans Home in Sandusky, OH. Included the installation of two additional pipes and the replacement of all two-pipe fan coil units (FCU) with new 4 pipe Fan Coil Units, added new heating coils to existing Blower Coil Units, eliminated existing change over valves and reconfigured existing piping. New Fan Coil Units are provided with Energy Efficient Motors (ECM motors). Also evaluated the existing chiller and boiler piping connections and reconfigured as required. Existing control system modifications.
Electrical: Electrical work associated with new Fan Coil units and new piping installation.

Architectural: Architectural work associated with new Fan Coil units and new piping installation.

Project: ODOT District 6 HVAC Upgrade

Owner: Ohio Department of Transportation

Year: 2015-16

Cost: $3,500,000

Project Manager: Ali Alghothani, PhD, PE

Scope: Conducted field investigation to develop a program of requirement for the project along with cost options for the design phase. POR options are being implemented in the design phase.

This project is an HVAC upgrade of existing ODOT District six (6) facility. The facility consists of the Original building and the newer addition. The facility has original office and garage remodeled in 1969. It appears that an HVAC upgrade was implemented in office area, garage including test laboratory, radio shop and welding shop circa 1985. A 2002 upgrade targeted conversion of pneumatic controls to Direct Digital Control (DDC). New and older facility have independent HVAC systems. Older part has independent Chilled and heating water loops and Air distribution is achieved by two Multizone Air Handling units. Relatively new Boilers provide heating to the Old Building.

Upgrade HVAC system (Carrier module system) to VAV Air Terminal Units with reheat, replaced Chillers, Boilers and upgraded chilled water and heating water plants, provided more efficient control system.

Project: Columbus Public Health Building 240 Parsons HVAC Upgrade

Owner: City of Columbus

Year: 2014-15

Cost: $4,565,000

Project Manager: Hamid Mukhtar, PhD, PE

Scope: The HVAC system was renovated in 2000-2001 and has since been found with many deficiencies in its daily routine operation. A brief study was performed as to why the system is failing and was determined to be lack of air flow, inoperable VAV terminals, heating and chilled water delivery restrictions, valve and damper malfunctions, and a failing direct digital controls system. The building was not meeting the JCA and CDC requirements with too often chiller failures, an expedited backup chiller project is under construction.

Star has been chosen to renovate the HVAC system and all related complements; Design is currently underway.

City of Columbus project, in initial design analysis and meetings with ownerís operations and maintenance personnel Star engineers found that when construction in 2002 was completed there was lack of water treatment/filtrations, a number of controls were not functional and control system was not responding and no spare parts were given to Operations and Maintenance staff. STAR based on their commissioning agent experience decided to use such strength from conception of the project and developed Program of Requirements (POR) with multiple options.

As such the first component STAR did was, collect missing information that included performance of chilled water, hot water and cooling tower pumps and outside air quantities on 11 Air Handlers and 6 pumps. When measurements become available, these were used for design loads and construction that will be followed with commissioning and completion.

Project entails providing a backup chiller, replacement of existing chiller plant, new Air Handling units and a distribution system. Star performs commissioning on all their projects even if they are LEED or not by using in-house resources.

Project: ODOT Distric 10 MEP Upgrade

Owner: Ohio Department of Transportation

Year: 2008

Cost: $1,100,000

Project Manager: Hamid Mukhtar, PhD, PE

Scope: Conducted field investigation to validate/develop a program of requirement for the project.

Upgraded HVAC system (Carrier module system) to VAV Air Terminal Units with reheat, replaced Chillers, Boilers and upgraded chilled water and heating water plants, provided more efficient control system.

HVAC: Upgrades. Including Boilers, Chillers, Air Handlers, Air Terminal Units, piping modification and controls.

Electrical: New electrical switchgear, and all Electrical work