초록 ▼

Solar heating systems which utilize the heat of the sun to obtain a continuous pumping action and which do not require constant or periodic care have not previously been available. Herein, percolating action is utilized, in conjunction with reduced pressure within the solar heating system, to provid

Solar heating systems which utilize the heat of the sun to obtain a continuous pumping action and which do not require constant or periodic care have not previously been available. Herein, percolating action is utilized, in conjunction with reduced pressure within the solar heating system, to provide the pumping function. The system can be utilized to transfer heat via heat exchanger to another fluid or can be utilized to heat swimming pools and the like. Briefly, the working fluid within the system is boiled at a pressure below atmospheric and the vapor is used to lift liquid from one level to another in the system through a lift tube.

대표청구항 ▼

A liquid containing a solar heating system having a higher level having a solar heat collector and a lower level having a heat exchanger below said collector, said system having a liquid therein, said exchanger extracting heat from said liquid and thereby forming a cooled liquid, an improvement comp

A liquid containing a solar heating system having a higher level having a solar heat collector and a lower level having a heat exchanger below said collector, said system having a liquid therein, said exchanger extracting heat from said liquid and thereby forming a cooled liquid, an improvement comprising: pressure maintaining means for maintaining said collector at a pressure such that said liquid therein boils and produces a vapor at a temperature below the boiling temperature of water at atmospheric pressure; a conduit having a top portion and a bottom portion and communicating said lower level in said system with said higher level in said system, said conduit having a column of said liquid therein; a lift tube in liquid flow communication with said top portion of said conduit; means for bubbling said vapor upwardly through said lift tube in response to solar heating of said solar heat collector for producing a force for lifting said cooled liquid from said heat exchanger to an elevation above said collector; condenser means for receiving said cooled liquid after it has been lifted by said force and for condensing said vapor; and conducting means for conducting said liquid from said condenser means to said collector.