Energy-conserving heat pump-boiler systems for district heating

Conference · Mon Aug 01 04:00:00 EDT 1983 · Proc., Intersoc. Energy Convers. Eng. Conf.; (United States)

OSTI ID:5374326

Taniguchi, H; Giedt, W H; Kasahara, K; Kawamura, K; Kudo, K; Ohta, J

The energy saving potential of a proposed heat pump-boiler system for district heating is analyzed. Fuel is supplied to a boiler which generates steam to drive a turbine. The turbine output is used to power a heat pump which takes energy from the environment. Introduction of a screw type expander in place of the throttling valve in the heat pump cycle is planned to increase the system performance. District heating is provided by hot water which is heated as it flows through the condensers in the heat pump and turbine cycles. Both series and parallel connected condenser arrangements are considered. Results show that the heat supplied to the water for district heating can be as high as 200 percent of the heating that would be provided by use of the fuel supplied to a conventional boiler system with a thermal efficiency of 90 percent.

• Research Organization: Department of Mechanical Engineering, Hokkaido University, Sapporo
• OSTI ID: 5374326
• Report Number(s): CONF-830812-
• Conference Information: Journal Name: Proc., Intersoc. Energy Convers. Eng. Conf.; (United States) Journal Volume: 4
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290800* -- Energy Planning & Policy-- Heat Utilization-- (1980-)
BOILERS
CONDENSERS
CONTROL EQUIPMENT
DISTRICT HEATING
EFFICIENCY
ENERGY CONSERVATION
EQUIPMENT
FLOW REGULATORS
FUELS
HEAT PUMPS
HEATING
HELICAL ROTARY SCREW EXPANDER
HOT WATER
HYDROGEN COMPOUNDS
MACHINERY
OXYGEN COMPOUNDS
PERFORMANCE
STEAM GENERATION
STEAM TURBINES
THERMAL EFFICIENCY
TURBINES
TURBOMACHINERY
VALVES
WATER