TEG was selected by the City of Nashville to provide design and project administration services for construction of a new steam and chilled waterline extension and service connection to the Music City Center (MCC) under construction in Nashville, TN. The new services extend from the existing steam, condensate and chilled water mains and the design included modifications to the Energy Generating Facility (EGF) to improve distribution system hydraulics and meet the requirements of the system expansion. A new 12" high pressure steam main, 6" condensate return, 24" chilled water supply and return mains were installed from the existing mains and extending to the future site. The service requirements for the MCC are estimated to be 47,500 lb/hr of steam and 5,820 tons of cooling. TEG was responsible for the interface with the building's engineer who is designing the building's decoupled thermal transfer systems. Chilled service began in April 2012, and steam service began in July 2012. Both design services and construction were completed below budget and ahead of schedule.
TEG was selected by Schneider Electric USA to engineer the installation of mechanical meters for the US Navy at many of the Navy's installations around the world. As part of a larger energy monitoring and reduction plan, the US Navy has contracted with Schneider Electric USA to install metering equipment to record and monitor the uses of water, natural gas, steam, electricity and fuel oil at a number of their bases. Schneider Electric USA has selected TEG to specify and design the installation of the mechanical meters for these locations. To date, the locations served include 28 bases in the US and 13 bases over seas. Many bases include hundreds of gas and water meters plus meters for many steam, liquid fuels and other process fluids. Bases outside the US presented challenges related to codes and standards. Even though these installations were on US bases, locally available materials and construction practices had to be addressed.
TEG has completed the design for Detroit Thermal, LLC (DTLLC) of the new steam service to the Rehabilitation Institute of Michigan (RIM) which is part of the Detroit Medical Center (DMC). To facilitate the new steam service, an existing 20" high pressure steam main will be relocated to accommodate a future DMC project and a new 8" main extension that will serve the RIM and another planned facility. The steam service requirements for the RIM is estimated to be 30,000 mbtuh. The service line will be a 6" high pressure riser installed external to the building and will enter the ninth floor boiler room. Metering and pressure reducing equipment will be installed within the boiler room. TEG is responsible for the interface with the building's engineer who is designing the modifications to the building's thermal systems.
TEG has completed the design for Detroit Thermal, LLC (DTLLC) of the new steam service to the Rehabilitation Institute of Michigan (RIM) which is part of the Detroit Medical Center (DMC). To facilitate the new steam service, an existing 20" high pressure steam main will be relocated to accommodate a future DMC project and a new 8" main extension that will serve the RIM and another planned facility. The steam service requirements for the RIM is estimated to be 30,000 mbtuh. The service line will be a 6" high pressure riser installed external to the building and will enter the ninth floor boiler room. Metering and pressure reducing equipment will be installed within the boiler room. TEG is responsible for the interface with the building's engineer who is designing the modifications to the building's thermal systems.
TEG is providing design services for development of construction documents for the installation of a river water intake, filtering and pumping system for an Ohio steel plant. The project includes design of a river intake system with lift pumps, filtering building and storage system and booster pumping and water delivery system and controls. The intake system is designed for up to 1,600 gpm. The filtering building is designed for 400 gpm with expansion capability to 800 gpm. The water delivery system will include three water makeup points initially with capacity to expand to two additional delivery points. The system will displace city water being purchased by the steel company.
TEG has been selected as the lead design engineer and project administrator for the development of a wood-fired co-generation facility in northern Ontario, Canada. The facility consists of a wood-fired gasifier-boiler capable of producing 52,000 pph of steam at 450 psig D&S, one 4 MWe condensing extraction steam turbine and corresponding steam distribution systems, along with all necessary ancillaries. The boiler and generation equipment will be relocated from Ohio to the northern Ontario location. The facility will be interconnected with a lumber production facility.
TEG is providing engineering services for the design, engineering and construction services for the gasification of coal, tires and biomass at an Ohio steel plant. The project will provide high BTU gas for use in the steel plant's reheat furnace to displace natural gas usage and will include recover waste heat from multiple sources. The project will utilize a circulating fluid bed gasifier to produce 350 mmBTU/hr of gas for the reheat furnace. Heat recovery boilers and three 10 MWe steam turbines will be included for heat recovery and steam generation. A steam distribution system will be included to pipe excess steam to an adjacent district energy system.
TEG is developing the design, modifying environmental permits, and providing construction liaison for a new solid fueled central heating and cogeneration facility for a community of greenhouse facilities in Ontario, Canada. The Energy Production Facility (EPF) will be designed and built to generate electric power and steam, exporting 10 MWe of electric energy to the local utility grid, 5 MWe for in-plant consumption and up to 150 mmBTU/Hr of thermal energy for the District Heating System. The Project is based on Circulating Fluidized Bed (CFB) biomass-fired boiler technology. Provisions to add a boiler system and a steam turbine-generator of equal size are part of the design concept. Design and construction of the EPF includes the boilers, air pollution control equipment, steam turbine generators, condensers and cooling towers, fans, stacks, biomass fuel bunkers, feeders and conveyors, ash handling including storage silo, boiler feedwater system and water treatment system and necessary plant auxiliaries. Also included are a carbon-dioxide capture and recovery system and a flue gas capture and recovery system along with all necessary ancillaries.
TEG was selected to provide engineering services to prepare design development documents and technical support related to the coal gasification process proposed to be installed on one of the power boilers at a South Carolina electric generating facility. Our scope of services included site services to review existing conditions, meet with customer's engineers and assess feasability and potential locations for the proposed cyclone gasifiers, prepare design development documents including process schematic(s) for fuel, flue gasses, combustion air, FGR, ash and ancillary systems, develop plan and elevation view of proposed equipment configurations, develop equipment list including electrical requirements and develop heat balance calculations sufficient to define equipment, piping and ductwork sizing and requirements.
TEG was selected by the City of Nashville to provide over-sight administration services under a five-year contract as the MNDES Contract Administrator for Nashville's District Energy System (DES). The Project Contract Administrator provides monitoring of operations and system maintenance, system and new customer development, rate development, invoice approval, coordination of customer related activities, contract compliance, budget preparation, and other administrative duties. The DES energy generation facility produces steam and chilled water for the heating and cooling needs of forty (40) buildings in the downtown business district. Both private and public buildings are served by the system through an energy distribution system of below ground pipes, control valves, and connections. Commercial operations of the new energy generation facility began December 17, 2003. The facility has operated with no "downtime" or loss of heating or cooling service to the customers, and has proven to be extremely reliable in its operations (see DES web site here). Constellation Energy Products and Services (CEPS), Metro's contractor, under a fifteen year management agreement with Metro, operates the facility and provides maintenance of the distribution system.
TEG has prepared the design and construction documents and approved award of the installation of approximately 900 trench feet of new condensate return line for Nashville's District Energy System's distribution system. The new line will facilitate the return of condensate from existing and future customers along the route as well as enabling the return of main-line drip legs currently being dumped into the existing vaults. In addition to improving the system's efficiency by reducing the volume of lost condensate, extension of the vault's life will be achieved by not depositing the aggressive condensate which requires periodic pumping to remove.
TEG has prepared the design and construction documents and is preparing to award the replacement of Nashville District Energy's last remaining steel underground vault. Originally installed approximately 30 years ago, the system's underground steel vaults have periodically been replaced as the metal slowly degrades. The vault is being replaced with a new concrete structure and vault internal piping valves, expansion joints and appurtenances will also be renewed.
TEG provides ongoing engineering and marketing support for NRG Energy Center, San Francisco, CA. This work includes a variety of central plant modifications, new customer connection evaluations and designs, new steam line main extensions and investigations into alternate energy sources. TEG is completing the design for steam service to the first of three condominiums at a new development in downtown San Francisco. This initial condominium is 22 floors tall, housing 440 units. It will require a new underground steam and condensate line extension of approximately 300 trench feet along with heat exchangers, condensate sub-coolers, condensate pumps and other appurtenances to provide approximately 4 mmBTU/hr of hydronic heat and 7mmBTU/hr of domestic hot water. The six most recent service connections combine to represent 35.2 mmBTU/hr of new heating and 18.8 mmBTU/hr of domestic hot water. Additional TEG provided design support for a 2,000 foot condensate line extension and a 300 foot steam line extension.
TEG was been selected as the design engineer and project administration coordinator for the design-build replacement of the GSA Central Heating Plant's Boiler #5's ID Fan in Washington, DC. The fan is a critical part of the facility's 11 MWe co-generation system. The scope of work includes the demolition and rebuilding/replacement of the existing ID fan's rotor, inlet cones, motor and VFD, repairs to the existing fan outlet damper, modifications to the control system as required to make the inlet box damper function as the primary control with the VFD control secondary. TEG is to evaluate ductwork between boiler outlet and ID fan inlet relative to new operating pressures and report to GSA on the suitability of that ductwork including recommendations for modifications that may be required to address pressure related problems. TEG is responsible for development and coordination of construction documents and assist in system start-up.
To determine the optimum expansion capability of an existing District Cooling Facility in Texas, TEG developed an engineering model of the existing chilled water production facility. The facility's present capacity is 18,000 tons which is produced by a combination of centrifugal chillers, screw compressor and ice storage with a planned expansion capacity of 32,000 tons. The study included hydraulic analysis of the existing facility piping and distribution system. The evaluation identified a number of interim measures that can be implemented immediately to improve capacity and efficiency and defines a facility configuration that will provide more than 10,000 tons of capacity above the original build-out capacity.
As the process designer of the Design/Build team selected by Western Kentucky University, TEG provided process design services to expand the University's district chilled water plant to twice its then current capacity of 1,800 tons. The expansion included the conversion of the original primary/secondary circuiting to a variable flow system, variable drives on the new chillers and incorporated new control automation which helped to improve the overall system's energy consumption by more than 15%. The project augmented the implementation of a Campus wide Energy management System.
TEG provided the process design services as the prime designer of the Design/Build team selected by Berea College for construction of their new central plant which provides heating, cooling and future co-generation services for the College campus located in central Kentucky. The new central plant includes 1,500 tons of cooling capacity, 45 mmBTU/hr of hot water production capacity and provisions for two 2,000 kW engine generators for future co-generation capability. Approximately 12,000 trench-feet of hot water and chilled water distribution piping connects a majority of the existing campus to this plant with provisions for ultimately connecting all the campus buildings.
TEG provides engineering support to a number of privately-owned and operated CHP/DHC facilities exceeding 3,400,000 pph steam, 14 MWe and 25,000 tons cooling. These services include life extension review and execution, plant expansion design and construction services, marketing support and feasibility analysis and plant acquisition and due diligence support.