District heating and cooling for the city of Olympia and the Washington State Capitol Campus: Phase 1 feasibility study

Technical Report · Sun Jun 01 04:00:00 EDT 1986

OSTI ID:6817026

Bloomquist, R G; Simpson, S J

A new secondary treatment plant is operating adjacent to downtown Olympia and only 18 blocks or 2 kilometers from the Washington State Capitol Campus. The feasibility was studied of a district heating and cooling (DHC) system which would utilize the effluent from the sewage treatment plant and/or other available hydrothermal resources. The proposed DHC system in Olympia would extract heat from the sewage effluent or other hydrothermal sources through the use of one or more large water-to-water heat pumps. Hot water from the heat pumps would, in turn, be distributed through a pipeline network to areas of downtown Olympia and the Capitol Campus. Individual buildings would connect to the system thus alleviating the need for a boiler, furnace, or other heating unit. The top rated scenario for downtown Olympia utilizes sewage effluent from a secondary treatment plant in conjunction with a large water source heat pump. Existing boilers at the Capitol Campus and new boilers, to be constructed near the heat pump, will provide peaking and back-up capabilities to the system. The heat pump plant will be located adjacent to the sewage treatment plant and will extract 15/sup 0/ to 20/sup 0/F from the treated effluent stream prior to its disposal in Budd Inlet. The DHC system could produce 10 to 25% savings over the fuels presently being used.

• Research Organization: Washington State Energy Office, Olympia (USA)
• DOE Contract Number: FG01-85CE26530
• OSTI ID: 6817026
• Report Number(s): DOE/CE/26530-T2; WAOENG-87-01; ON: DE87005299
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
BUILDINGS
COOLING
DISTRICT COOLING
DISTRICT HEATING
ENERGY RECOVERY
FEASIBILITY STUDIES
FEDERAL REGION X
HEAT PUMPS
HEAT RECOVERY
HEATING
HOT WATER
HYDROGEN COMPOUNDS
LIQUID WASTES
NORTH AMERICA
OXYGEN COMPOUNDS
RECOVERY
SEWAGE
URBAN AREAS
USA
WASHINGTON
WASTE WATER
WASTES
WATER
WATER TREATMENT