Design Build - Replace Chillers

The United States Geological Survey (USGS) is seeking qualified firms capable of performing design build construction to remove and replace cooling towers, install new chiller, new chilled piping, and new condenser water piping which serve the 1996 building addition at EROS. Location is the USGS/ Earth Resources Observation and Science (EROS) Center, 47914 252nd Street, Sioux Falls SD 57198. The existing cooling towers, condenser water piping, chilled water piping, heating water piping, and air handling equipment have been in the use since EROS Data Center opened in 1996. Sections of recently replaced condenser water piping and chilled water piping were found to be in extremely poor condition. The three original cooling towers are past their life expectancy and require regular repairs due to significant corrosion and degradation. A piping failure jeopardizes the facility and further degradation is inevitable. Furthermore, the existing condenser water piping network uses cooling towers and a single eight-inch pipe to return water to the condenser water pumps from the open cooling towers. The system is at its flow limit and if necessary, EROS cannot operate both chillers simultaneously due to lack of condenser water flow. EROS wishes to install a third chiller and additional condenser water flow is required. Furthermore, EROS uses condenser water heat recovery as the primary heating source in the winter. Lastly, both the chilled and condenser water piping networks utilize 3-way valves throughout which operate at full flow and it is inefficient.

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Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Packaged Water Chillers, Central HVAC Equipment.