초록 ▼

An improved multimode heat-pump type heating system 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 ini

An improved multimode heat-pump type heating system 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.

대표청구항 ▼

A multimode heating system for heating one or more rooms comprising first circulation means for circulating a heating fluid to treat the environment in the rooms, second circulation means for circulating an operating fluid and an absorbing liquid through a heat absorption path, said second circulati

A multimode heating system for heating one or more rooms comprising first circulation means for circulating a heating fluid to treat the environment in the rooms, second circulation means for circulating an operating fluid and an absorbing liquid through a heat absorption path, said second circulation means including primary heat pump means through which the operating fluid and absorbing liquid are circulated for absorbing heat from cold and hot heat sources, means for transferring heat within said second circulation means to the heating fluid within said first circulation means by one or more heat exchangers, and control means for controlling changes in the operation of the multimode heating system between first and second operating modes in response to exterior temperature conditions so that when exterior temperatures are above a predetermined point, the system operates in a first mode wherein The operating fluid is circulated through said cold heat source and subsequently mixed with said absorbing liquid for circulation through said hot heat source and when exterior temperatures fall below said predetermined point, said control means changes the system to the second operating mode wherein the flow of the operating fluid bypasses said cold heat source and said absorbing liquid and passes directly as a liquid from said transfer means to said hot heat source to be evaporated there with substantially only the operating fluid being circulated and used to heat the heating fluid in said first circulation means.