초록 ▼

A solar energy collector 16 for utilizing the energy of the sun to heat a working fluid. The collector comprises a core conduit 30 having a working fluid inlet end 32 and a closure 38 fitted across the other end. A single return conduit 42 is spirally wound upon the exterior surface of the core cond

A solar energy collector 16 for utilizing the energy of the sun to heat a working fluid. The collector comprises a core conduit 30 having a working fluid inlet end 32 and a closure 38 fitted across the other end. A single return conduit 42 is spirally wound upon the exterior surface of the core conduit, wherein the windings are in close lateral juxtaposition but with the return conduit and the core conduit both exposed to direct impingement of solar rays. A transparent tube 48 coaxially surrounds the core conduit 30. Annular members 52 and 54 are positioned at each end of the transparent tube 48 to maintain the spatial relationship of the members and form an annular air insulation zone around the core conduit 30 and return conduit 42.

대표청구항 ▼

A solar energy collector for utilizing solar energy to heat a working fluid, said solar energy collector comprising: a generally hollow metallic core cylinder having a working fluid inlet at one end thereof and closure means fitted across the other end thereof; a single metallic return conduit means

A solar energy collector for utilizing solar energy to heat a working fluid, said solar energy collector comprising: a generally hollow metallic core cylinder having a working fluid inlet at one end thereof and closure means fitted across the other end thereof; a single metallic return conduit means having an inlet end tapped into said core cylinder in a posture generally at the other end of said core cylinder and a fluid outlet end extending generally adjacent to said inlet end of said core cylinder, said return conduit means being wrapped in intimate heat exchange contact about said core cylinder; transparent cylindrical tube means coaxially mounted about said core cylinder and having a diameter sufficiently greater than said core cylinder such that a peripheral space exists between the interior of said transparent cylinder and the exterior of said return conduit means wrapped about said core cylinder; and annular means at each end of said transparent cylinder means and said core cylinder for maintaining the spatial coaxial relationship of said core cylinder within said transparent cylindrical tube means and for forming an annular air insulation chamber around said core cylinder and said metallic return conduit means, wherein working fluid may be pumped into said core cylinder, pass through said core cylinder and said metallic return conduit within said transparent tube means and be heated by solar energy within the air insulation envelope.