Patent ID: 7669593
Filing Date: 2010-03-02
Classification: B32B,F24S,Y02E

Abstract:
1. A reflector for a central receiver system, the reflector comprising: a mirror having a front surface and a back surface; a facet having walls defining a coolant channel, the coolant channel adapted to receive a heat conductive liquid wherein the facet includes a metal backing coupled to a metal substrate of the mirror, the metal backing and the metal substrate having alternating projections extending into the coolant flow channel; and an adhesive compound bond between the back surface of the mirror and the facet such that the mirror is fixed to the facet and the facet imposes a thermally induced compressive stress along the back surface of the mirror; wherein the compressive stress imposed by the facet along the back surface of the mirror depends upon thermal contraction of the facet and is sufficient in magnitude so that tensile stress on the mirror is minimized when the mirror is being operated at an operating temperature.