US 4,787,367 AGranted

Solar collector device

AssigneeTebodin, Advies- en Constructiebureau B.V.

InventorBernardus A. Crul

Life of this patent

Estimating the term…

Loading patent…

Abstract

A solar collector device for the warming up of water, comprising a flat cylinder-shaped absorber element through which the water flows and made of temperature resistent black polymeric film material, on the sunside a cover element of at least one transparent polymeric film and on the shadowside an insulation panel. In the black polymeric film of the absorber element spectral-selective absorption pigment is embedded and an inner film is used with a high impermeability for water and water vapor, which latter film is laminated with the black outer film to one integrated film. The absorber element is executed for a great length of many tens of meters. A water header having a weir device is provided at the outlet side of the absorber element and, below said header, a water collecting tank. The weir device has such a height with respect to the absorber element, that, in combination with the correct dimensioning of the water inlet and outlet openings, the absorber element operates with a water layer height of a few centimeters c.q. with a water velocity of a few centimeters per second.

Claims5

Dependent claims

A solar collector for warming up of water comprising:

a flat cylinder-shaped absorber, through which water flows, having an integrated film including:
an inner film being substantially impermeable for water and water vapor;
and
a temperature resistant, black polymeric outer film being laminated on said inner film so that said outer film has an embedded spectral-selective absorption pigment;
a cover, disposed on a sunside of said absorber, including at least one transparent polymeric film;
and
an insulation panel, disposed on a shadowside of said absorber;
wherein said absorber further comprises:
first and second opposed ends;
a water inlet at said first end;
a water outlet at said second end;
and
said solar collector further comprises:
a water inlet header and a water outlet header, on which said inlet and said outlet of said absorber are fixed respectively, said outlet header having a weir device;
and
a water collecting tank, located below said outlet header, whereby said weir device is at such a height with respect to said absorber, and said inlet and outlet openings are of such dimension, that said absorber operates with a water layer height of a few centimeters casu quo with a water velocity of a few centimeters per second.

13 more elements

Dependencies are inferred from the claim text.