Multimode heating system and method for heating

Patent · Tue Jul 26 04:00:00 EDT 1983

OSTI ID:5373201

de Vries, A O.T.

An improved multimode heat-pump type heating system is disclosed, designed to heat a plurality of rooms efficiently under a variety of ambient temperature conditions. When in its first mode the heat pump system employs an operating fluid, such as ammonia, and an absorbing liquid, such as water. The ammonia is initially evaporated in a cold heat source so as to absorb or extract heat therefrom. It is then absorbed by the absorbing liquid and both transported to a boiler where the two are again separated. The absorbing liquid returns to the absorbing area while the operating fluid flows to a condenser and condensed after which it is returned directly to the evaporator. A plurality of heat exchangers are used to transfer heat from the operating fluid, the absorbing liquid or the system to a room heating fluid. In the second mode, the evaporator and absorbing portions of the system are bypassed and only the operating fluid circulates from the condenser to the boiler past heat exchangers in order to heat the operating fluid. The system switches to the second mode when ambient temperatures fall below a preselected temperature or when pressure in the evaporator drops below a predetermined level.

• Assignee: N.V. Nederlandse Gasunie, (Netherlands)
• Patent Number(s): US 4394959
• OSTI ID: 5373201
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
AMMONIA
BUILDINGS
DESIGN
EFFICIENCY
ENERGY SYSTEMS
FLUIDS
HEAT EXCHANGERS
HEAT PUMPS
HEAT TRANSFER FLUIDS
HEATING SYSTEMS
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
WATER