초록 ▼

A solar collector for a solar energy system comprises a solar absorber for converting solar radiation into heat, a heat transfer fluid for transferring heat from the solar absorber, at least one passage for flow of the fluid in contact with the solar absorber surface, and apparatus for creating a re

A solar collector for a solar energy system comprises a solar absorber for converting solar radiation into heat, a heat transfer fluid for transferring heat from the solar absorber, at least one passage for flow of the fluid in contact with the solar absorber surface, and apparatus for creating a relative vacuum in the at least one passage so as to minimize the creation of a stagnant boundary layer of the fluid when it is pumped through the at least one passage. The at least one passage is preferably formed by a convoluted surface on the solar absorber which defines at least one groove, and a flexible sheet which overlies the convoluted surface and sealingly engages the surface through the action of a vacuum. The heat transfer fluid preferably is selected from the group of mineral oil, aliphatic hydrocarbon oils, and silicone oils.

대표청구항 ▼

A solar heat collector comprising solar absorber means for converting solar radiation into heat, a heat transfer liquid for transferring heat from said solar absorber means, means defining at least one passage for providing flow of said heat transfer liquid in contact with said solar absorber means

A solar heat collector comprising solar absorber means for converting solar radiation into heat, a heat transfer liquid for transferring heat from said solar absorber means, means defining at least one passage for providing flow of said heat transfer liquid in contact with said solar absorber means and for enabling solar radiation to pass through the heat transfer liquid during the flow thereof through said at least one passage, means, including a pump, for pumping said heat transfer fluid through said at least one passage to provide heating thereof by solar radiation and for supplying the heat transfer liquid for utilization after heating thereof in said at least one passage; and means for creating a relative vacuum in said at least one passage so as to minimize the creation of a stagnant boundary layer of said heat transfer liquid in contact with said solar absorber means when said heat transfer liquid is pumped through said at least one passage.