Patent ID: 8353286

Claim:
A solar water heater, comprising: a plurality of water heating units, each water heating unit being elongate with a length at least three times greater than a diameter thereof, said plurality of water heating units being oriented with respect to the Earth during operation between a first angle equal to or greater than fifteen degrees and a second angle equal to or less than ninety degrees; an inner glass tube and an outer glass tube for each of said plurality of water heating units, said inner glass tube and said outer glass tube defining a heat insulation region therebetween, said inner glass tube and said outer glass tube defining an opening at one end of said inner glass tube and said outer glass tube; a metal water container for each of said plurality of water heating units mounted inside of said inner and outer glass tubes and extending through said opening at said one end of said inner and outer glass tubes; a metal flange for each of said plurality of water heating units secured to each metal water container; a metal base box to which said metal flange for each of said plurality of water heating units is secured; an insulation gasket between metal water container and metal base box; a plurality of fluid interconnections positioned within said metal base box which fluidly connect between said plurality of water heating units; insulation material supported within said metal base box which surrounds said plurality of fluid interconnections; an end seal for each of said plurality of water heating units which engagingly seals between said metal water container and said inner glass tube to seal said opening at said one end of said inner glass tube and said outer glass tube.