TEG was selected by EnWave USA (previously Entergy Thermal, LLC) who owns and operates the downtown New Orleans DHC system, to develop construction documents for a major expansion of its DHC system. The expansion primarily consists of extension of the existing chilled water, steam and condensate return service piping to the LSU Human Development Center (HDC) and the new University Medical Center (UMC) campus being constructed in downtown New Orleans. The new mains consist of 24" chilled water supply and return, 12" steam and 6" condensate return piping. The main extension consists of over 4,872 trench-feet of piping plus service lines that extend to three individual buildings. Energy transfer facilities are located within the individual buildings of the UMC campus. The project also included a heat recovery chiller installed in the utility building on the UMC campus and integrated into the new DHC systems of the campus. Hot water and chilled water piping between the utility building and the two major hospital buildings of the UMC campus was provided. The anticipated loads of the several building served are 8,817 tons of cooling and 116,000 lbs/hr of steam supply.
Value of Construction - $18,000,000
TEG was awarded the design and project administration services contract for constructing a steam and condensate pipeline to serve the General Motors (GM) Assembly Plant in Hamtramck, MI. The new services, consisting of a 20" high pressure steam main and 6"condensate return line, extend approximately 7,200 feet from the municipal solid waste-fueled co-generation facility to the Hamtramck facility's powerhouse. The design included modification to three separate boiler plants. The steam is primarily supplied from extraction steam from the co-gen facility. To achieve the desired steam export, significant modifications were required to the co-gen systems controls, process extraction, desuperheating and condensate systems. The GM facility receiving the services required modification to facilitate delivery of externally generated steam, manage return of condensate and lay-up the existing coal and gas-fired boilers with hot stand-by provisions. A third boiler plant which provides back-up steam service to the waste-to-energy (WTE) facility required re-rating of two large package boilers to a higher operating pressure required to enable these boilers to provide the high pressure backup steam to the GM facility. In addition to boiler modifications, new steam export piping was installed, along with feedwater system modification to facilitate the higher pressure, control system modification to enable dual-pressure operation of the re-rated boilers and replacement of economizers of both boilers to facilitate the required capacity.
Value of Construction - $12,000,000
TEG is preparing the design and construction documents for the installation of approximately 1,500 trench feet piping extension for Nashville's District Energy System's service to the Music City Convention Center under construction. The service extension will include new 24" chilled water supply and return piping in addition to a new 12" steam and 6" condensate piping. The new service extension will expand the distribution system to connect the new Convention Center loads and facilitate additional expansion of the distribution system in the downtown area adjacent to the new Convention Center.
Value of Construction - $8,500,000
TEG developed the construction documents and performed construction surveillance for the replacement of 140 trench feet of steam and condensate service piping to 120 2nd Avenue North (The Wildhorse Saloon) which forms a portion of the Metropolitan Nashville District Energy System (MNDES). The existing condensate piping had deteriorated and been taken out of service and the existing steam piping passed through an existing underground manhole which was in poor condition. The replacement routing eliminated the need for the underground manhole and not only now enables the return of the customer's condensate but also has reduced system maintenance costs with the elimination of a manhole.
Value of Construction - $212,000
TEG was selected by Entergy Thermal, LLC (the owner and operator of the downtown New Orleans district heating and cooling system) to develop construction documents for the extension of the existing chilled water, steam and condensate return service piping to the new Louisiana Cancer Research Center (LCRC) being constructed in downtown New Orleans. The extension consists of 24" and 14" chilled water supply and return piping, 8" and 6" steam piping, and 4" and 3" condensate return piping. The extension consists of approximately 320 trench feet of piping which is tied into existing distribution piping which is suspended from an overhead walkway. The new piping transitions from the overhead walkway to direct-buried piping for service to the LCRC. The anticipated loads to be served are 2,00 tons of cooling and 35 mmtbu/hr of heating.
Value of Construction - $3,000,000
TEG developed the construction documents and performed construction surveillance for the replacement of 290 trench feet of condensate service piping to the Ryman Auditorium which forms a portion of the Metropolitan Nashville District Energy System (MNDES). The existing piping had deteriorated and been taken out of service. The piping was replaced in order to return the Ryman Auditorium's condensate to the MNDES system.
Value of Construction - $205,000